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id0instance
type: InProceedings
type: Publication
abstract: OntoWeb is an European Union IST-funded thematic network for Ontology-based information exchange for knowledge management and electronic commerce. The corresponding OntoWeb portal constitutes a Web-based research information system that is driven by some of the technologies which it reports about. In this paper, we present the core methodology underlying the OntoWeb portal,viz. SEAL (SEmantic portAL). In particular, we describe some of the core challenges that SEAL must meet. Because of the distributed nature of research information, SEAL has been developed as a methodology that integrates heterogeneous information from distributed resources. Because of the complexity of the application domain, SEAL is based on ontologies about research information that greatly contribute to the combined goals of low-effort information integration and user-friendly information presentation. Because of the high quality requirements obliged onto the OntoWeb portal, SEAL has been extended with content management functionality supporting portal editors in their process to rule out undesirable content.
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booktitle: First International Conference on Intelligent Computing and Information Systems (ICICIS 2002) in Cairo, Egypt, June 24-26, 2002
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title: SEAL - A Semantic Portal with Content Management Functionality
year: 2002

id1000instance
type: Article
type: Publication
abstract: Die prozessorientierte Abbildung kompletter Logistikketten ist ein wichtiger Anwendungsbereich der Oracle E-Business Suite. Erfahrungen aus der Realisierung von Supply Chain Management-Lösungen belegen, dass insbesondere bei der Abbildung unternehmensübergreifender Logistikketten die laufende Überwachung und kontinuierliche Optimierung der Prozesse zum kritischen Erfolgsfaktor wird. Gefordert sind eine strukturierte Dokumentation der Supply Chains sowie umfassende Analyse– und Bewertungsfunktionalitäten. (unreviewed)
author: id1876instance
author: id1890instance
author: id2058instance
is about: id16instance
journal: DOAG News - Deutsche Oracle Anwendergruppe
month: August
number: Q3
pages: pp. 20-25
title: Prototypische Entwicklung eines prozessbasierten Supply-Chain-Management-Systems
year: 2005

id1001instance
type: InProceedings
type: Publication
abstract: We address the problem of efficiently ranking the best peers w.r.t. a query with multiple, equally weighted predicates -- conjunctive queries -- in shortcut overlay networks. This problem occurs when routing queries in unstructured peer-to-peer networks, such as in peer-to-peer information retrieval applications. Requirements for this task include, e.g., full autonomy of peers as well as full control over own resources. Therefore prominent resource location and query routing schemes such as distributed hash tables can not be applied in this setting. In order to tackle these requirements we combine a new resource location and query routing approach that exploits social metaphors of topical experts and experts' experts with standard IR measures for ranking peers based on collection-wide information. The approach has been fully tested in simulation runs for skewed data distributions and network churn and has been partially implemented in the Bibster system.
address: Agia napa, Cyprus
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author: id103instance
author: id631instance
booktitle: On the Move to Meaningful Internet Systems 2005: CoopIS, DOA, and ODBASE. OTM Confederated International Conferences CoopIS, DOA, and ODBASE 2005
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month: October
pages: 1261-1278
series: Lecture Notes in Computer Science
title: Community based Ranking in Peer-to-Peer Networks
volume: 3760
year: 2005

id1002instance
type: InProceedings
type: Publication
abstract: JOSCHKA (Job Scheduling Karlsruhe) ist ein System zum Verteilen von Rechenjobs auf verschiedene voneinander unabhängige Rechensysteme. Es handelt sich dabei um ein Client-Server-basiertes Verteilsystem, das sich durch folgende Eigenschaften auszeichnet: Es unterstützt heterogene Systeme, Kommunikation und Datenaustausch erfolgen dabei ausschließlich mit Webtechnologien. Dabei ist das System generisch, für viele unterschiedliche Aufgaben einsetzbar, für Entwickler leicht zu benutzen und erfordert keinerlei Installationsaufwand bei den Clients. Im Folgenden werden die Arbeitsweise des Systems und die zugrunde liegende Architektur beschrieben. Am Schluss folgen Praxiserfahrungen.
author: id29instance
author: id46instance
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booktitle: PARS Mitteilungen 2005
month: June
pages: 99--106
title: JOSCHKA: Job-Scheduling in heterogenen Systemen
year: 2005

id1003instance
type: InProceedings
type: Publication
abstract: Representing knowledge about researchers and research communities is a prime use case for distributed, locally maintained, interlinked and highly structured information in the spirit of the Semantic Web. In this paper we describe the publicly available `Semantic Web for Research Communities' (SWRC) ontology, in which research communities and relevant related concepts are modelled. We describe the design decisions that underlie the ontology and report on both experiences with and known usages of the SWRC Ontology. We believe that for making the Semantic Web reality the re-usage of ontologies and their continuous improvement by user communities is crucial. Our contribution aims to provide a description and usage guidelines to make the value of the SWRC explicit and to facilitate its re-use.
address: Covilha, Portugal
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author: id79instance
author: id90instance
booktitle: Proceedings of the 12th Portuguese Conference on Artificial Intelligence - Progress in Artificial Intelligence (EPIA 2005)
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month: December
pages: 218 - 231
series: LNCS
title: The SWRC Ontology - Semantic Web for Research Communities
volume: 3803
year: 2005

id1004instance
type: InProceedings
type: Publication
address: Banff, Alberta, Canada
author: id98instance
author: id558instance
author: id620instance
author: id621instance
booktitle: Proceedings of the 3rd International Conference on Knowledge Capture (KCAP)
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pages: 75-82
title: Browsing for Information by Highlighting Automatically Generated Annotations
year: 2005

id1005instance
type: Proceedings
type: Publication
editor: id20instance
editor: id6instance
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month: October
title: Journal of Knowledge Management -- Special Issue on Semantically Enabled Knowledge Technologies
volume: 9 (5)
year: 2005

id1006instance
type: InProceedings
type: Publication
abstract: To enable interoperability between applications in distributed information systems based on heterogeneous ontologies, it is necessary to formally define the notion of a mapping between ontologies. In this paper, we define a mapping system for OWL-DL ontologies, where mappings are expressed as correspondences between conjunctive queries over ontologies. As query answering within such a general mapping system is undecidable, we identify a decidable fragment of the mapping system, which corresponds to OWL-DL extended with DL-safe rules. We further show how the mapping system can be applied for the task of ontology integration and present a query answering algorithm.
author: id2023instance
author: id2111instance
booktitle: IHIS 05: Proceedings of the first international workshop on Interoperability of heterogeneous information systems
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month: November
pages: 9-16
title: A Mapping System for the Integration of OWL-DL Ontologies
year: 2005

id1007instance
type: InProceedings
type: Publication
author: id2023instance
author: id2053instance
booktitle: Proceedings of the Workshop on Uncertainty Reasoning for the Semantic Web (URSW)
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month: November
pages: 45-55
title: Ontology Learning and Reasoning - Dealing with Uncertainty and Inconsistency
year: 2005

id1008instance
type: Article
type: Publication
abstract: Despite its explosive growth over the last decade, the Web remains essentially a tool to allow humans to access information. The next generation of the Web, dubbed the ‘Semantic Web’, will extend the Web’s capability through the increased availability machine-processable information. These machine-processable descriptions of Web information resources are called meta-data and are associated with ontologies, or conceptualisations of the domain of application. Meta-data and associated ontologies then allows more intelligent software systems to be written, automating the analysis and exploitation of Web-based information. This paper describes how knowledge management can be improved through the adoption of Semantic Web technology. To realise this, a number of different technologies need to be brought together. Their fusion provides the infrastructure which makes semantic knowledge management possible. Specifically, the paper discusses the use of knowledge discovery and human language technology to (semi-)automatically derive the required ontologies and meta-data, along with a methodology to support this process. We describe techniques for management and controlled evolution of ontologies and a set of semantic knowledge access tools for enhanced information access. Finally, a set of application scenarios for the technology are sketched.
author: id20instance
author: id57instance
author: id633instance
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journal: BT Technology Journal
month: July
note: Issue on Enabling Future IT
number: 3
pages: 175-190
title: Next Generation Knowledge Management
volume: 23
year: 2005

id1009instance
type: Misc
type: Publication
abstract: This document contains brief descriptions of the relationship between WRL and other selected relevant technologies
author: id2084instance
author: id510instance
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author: id606instance
author: id609instance
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howpublished: W3C Member Submission, 09 September 2005
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month: September
title: Relationship of WRL to relevant other technologies
year: 2005

id1010instance
type: Proceedings
type: Publication
editor: id2084instance
editor: id8instance
editor: id634instance
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month: September
number: 9/2005
series: Fachberichte Informatik, University of Koblenz-Landau
title: Proceedings of the KI2005 Workshop on Foundational Aspects of Ontologies, FOnt'05, Koblenz, Germany, September 2005
year: 2005

id1011instance
type: Publication
type: TechnicalReport
abstract: This papers describes the requirements for a semantic versioning system for RDF/S ontologies. The design, implementation and usage of SemVersion are described.
author: id2076instance
author: id20instance
author: id635instance
author: id636instance
author: id637instance
author: id638instance
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month: June
series: 2.3.3.v1
title: SemVersion - Versioning RDF and Ontologies
type: Knowledge Web Deliverable
year: 2005

id1012instance
type: InProceedings
type: Publication
abstract: Die Wiederverwendung von Lernobjekten gilt als probates Mittel, den erheblichen Zeit- und Kostenaufwand zu reduzieren, der mit der Erstellung neuer multimedialer Lernangebote verbunden ist. Dabei erweist sich das Auffinden geeigneter Lernmaterialien oftmals als schwierig, da diese nur selten mit aussagekräftigen Metadaten assoziiert sind. In dem vorliegenden Beitrag wird das Konzept eines alternativen, metadatenunabhängigen Retrieval-Verfahrens vorgestellt, das die Nutzungskontexte wiederverwendeter Lernobjekte entdeckt, akkumuliert und analysiert und auf Grundlage der gewonnenen Erkenntnisse Hilfestellung bei der Recherche, Auswahl und Strukturierung von Lernressourcen anbietet. Angeknüpft wird dabei an das international etablierte Sharable Content Object Reference Model (SCORM), das mit den Activity Trees eine viel versprechende und bislang ungenutzte Möglichkeit eröffnet, die Historie eines Lernobjektes zu rekonstruieren und zu verwerten.
author: id29instance
author: id65instance
booktitle: Workshop Proceedings. Delfi 2005 und GMW05
is about: id20instance
pages: 113-121
title: Activity Tree Harvesting: Entdeckung, Analyse und Verwertung der Nutzungskontexte SCORM-konformer Lernobjekte
year: 2005

id1013instance
type: InProceedings
type: Publication
author: id2078instance
author: id6instance
author: id79instance
author: id641instance
booktitle: Proceedings of Enterprise Modelling and Information Systems Architectures (EMISA) 2005, October 24-25, 2005 - Klagenfurt, Austria (in conjunction with ER'05)
has project: id39instance
has project: id50instance
is about: id135instance
is about: id136instance
pages: 194-207
series: LNI
title: Economic Reflections on Managing Web Services Using Semantics
volume: P-75
year: 2005

id1014instance
type: InProceedings
type: Publication
abstract: Schema integration has become a task of increasing importance. In this paper we give a guide on how to automatically optimally set the parameters of semantic alignment algorithms respectively tools for a wide range of use cases. We basically define a utility function to rate the results of alignment algorithms. Then we backtrack from the utility function first to concrete requirements for the results and then to the parameters of alignment algorithms. The gains of our methodology are confirmed by its implementation and evaluation.
address: Radisson SAS Royal Garden Hotel, Trondheim, Norway
author: id20instance
author: id80instance
booktitle: Proceedings of the Workshop on Ontologies-based techniques for DataBases and Information Systems (ODBIS) at the 31st International Conference on Very Large Databases (VLDB) 2005
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has project: id49instance
is about: id69instance
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month: August
title: Adaptive Semantic Integration
year: 2005

id1015instance
type: InProceedings
type: Publication
address: Galway, Ireland
author: id2076instance
author: id91instance
booktitle: Proceedings of Workshop on Semantic Web Enabled Software Engineering (SWESE)
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has project: id43instance
is about: id85instance
month: November
title: Towards more efficient Software Engineering with formal MDA
year: 2005

id1017instance
type: InProceedings
type: Publication
address: Galway, Ireland
author: id2084instance
author: id91instance
booktitle: Proceedings of Workshop on OWL Experiences and Directions
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month: November
note: Online http://ftp.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-188/sub5.pdf
series: CEUR Workshop Proceedings
title: Modeling Fuzzy Rules with Description Logics
volume: 188
year: 2005

id1019instance
type: InProceedings
type: Publication
address: Galway, Ireland
author: id2078instance
author: id91instance
booktitle: Proceedings of the Semantic Web and Policy Workshop, held in conjunction with the 4th International Semantic Web Conference
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has project: id51instance
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month: November
pages: 99-109
title: Specification of Policies for Automatic Negotiations of Web Services
year: 2005

id101instance
type: Article
type: Publication
author: id37instance
author: id33instance
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journal: Evolutionary Computation
number: 3
pages: 235-262
title: Modelling the Dynamics of Ant Colony Optimization Algorithms
volume: 10
year: 2002

id1020instance
type: InProceedings
type: Publication
author: id2126instance
booktitle: Reading and Learning, Adaptive Content Recognition
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pages: 281-305
series: Lecture Notes in Computer Science
title: Improving Document Transformation Techniques with Collaborative Learned Term-Based Concepts
volume: 2956
year: 2004

id1021instance
type: Publication
type: TechnicalReport
abstract: The deliverable D1.2.3 analyses and evaluates existing methods for ontology content evaluation according requirements from an industrial point of view.
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is about: id107instance
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is about: id24instance
is about: id70instance
is about: id79instance
month: December
series: D1.2.3
title: Methods for ontology evaluation
type: KWeb Deliverable
year: 2004

id1022instance
type: Misc
type: Publication
author: id90instance
author: id530instance
author: id643instance
author: id644instance
author: id646instance
author: id648instance
author: id649instance
has project: id43instance
is about: id100instance
is about: id102instance
is about: id119instance
is about: id136instance
is about: id137instance
is about: id53instance
is about: id79instance
is about: id80instance
is about: id81instance
month: July
note: KWeb Deliverable D1.2.2
title: Report on Semantic Web Framework requirements analysis
year: 2005

id1023instance
type: Misc
type: Publication
abstract: This deliverable presents a set of structured metadata for evaluated and certified ontologies.
author: id90instance
author: id644instance
author: id650instance
author: id651instance
author: id652instance
author: id653instance
author: id654instance
has project: id43instance
is about: id100instance
is about: id102instance
is about: id107instance
is about: id10instance
is about: id119instance
is about: id134instance
is about: id137instance
is about: id141instance
is about: id24instance
is about: id25instance
is about: id49instance
is about: id51instance
is about: id64instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
is about: id80instance
is about: id81instance
is about: id9instance
month: January
note: KWeb Deliverable D1.3.2
title: Identification of standards on metadata for ontologies
year: 2005

id1024instance
type: InProceedings
type: Publication
author: id2023instance
author: id20instance
author: id57instance
author: id90instance
author: id644instance
author: id650instance
author: id655instance
booktitle: International Conference on Ontologies, Databases and Applications of Semantics. In Workshop on Web Semantics (SWWS)
has project: id43instance
is about: id100instance
is about: id102instance
is about: id137instance
is about: id53instance
is about: id79instance
is about: id80instance
month: October
pages: 906-915
title: Ontology Metadata Vocabulary and Applications
year: 2005

id1025instance
type: InProceedings
type: Publication
author: id2023instance
author: id20instance
author: id90instance
author: id644instance
author: id655instance
booktitle: ISWC 2005 - In Ontology Patterns for the Semantic Web
has project: id43instance
is about: id100instance
is about: id102instance
is about: id119instance
is about: id137instance
is about: id52instance
is about: id53instance
is about: id79instance
is about: id80instance
month: November
title: OMV -- Ontology Metadata Vocabulary
year: 2005

id1027instance
type: InProceedings
type: Publication
address: Galway, Ireland
author: id6instance
author: id83instance
author: id103instance
author: id12instance
author: id656instance
author: id657instance
booktitle: The Semantic Web – ISWC 2005: 4th International Semantic Web Conference, ISWC 2005
has project: id30instance
has project: id55instance
is about: id123instance
is about: id139instance
is about: id79instance
month: November
pages: 491 -- 505
series: LNCS
title: Searching Dynamic Communities with Personal Indexes
volume: 3729
year: 2005

id1028instance
type: InProceedings
type: Publication
abstract: Ontology alignment is a prerequisite in order to allow for interoperation between different ontologies and many alignment strategies have been proposed to facilitate the alignment task by (semi-)automatic means. Due to the complexity of the alignment task, manually defined methods for (semi-)automatic alignment rarely constitute an optimal configuration of substrategies from which they have been built. In fact, scrutinizing current ontology alignment methods, one may recognize that most are not optimized for given ontologies. Some few include machine learning for automating the task, but their optimization by machine learning means is mostly restricted to the extensional definition of ontology concepts. With APFEL (Alignment Process Feature Estimation and Learning) we present a machine learning approach that explores the user validation of initial alignments for optimizing alignment methods. The methods are based on extensional and intensional ontology definitions. Core to APFEL is the idea of a generic alignment process, the steps of which may be represented explicitly. APFEL then generates new hypotheses for what might be useful features and similarity assessments and weights them by machine learning approaches. APFEL compares favorably in our experiments to competing approaches.
author: id20instance
author: id6instance
author: id80instance
booktitle: Proceedings of the 4th International Semantic Web Conference, ISWC 2005, Galway, Ireland, November 6-10, 2005.
has project: id30instance
has project: id42instance
has project: id43instance
has project: id49instance
is about: id134instance
is about: id79instance
month: November
note: Nominated for best paper award!
pages: 186-200
series: LNCS
title: Bootstrapping Ontology Alignment Methods with APFEL
volume: 3729
year: 2005

id1029instance
type: InProceedings
type: Publication
address: Melbourne/Australia
author: id1876instance
author: id2088instance
author: id451instance
booktitle: Proc. 1st IEEE Int. Conference on e-Science and Grid Computing (e-Science 2005)
is about: id19instance
month: December
pages: 320-327
title: Web services-based Architecture for Reducing Behaviour and Quality Uncertainties
year: 2005

id102instance
type: InProceedings
type: Publication
abstract: A population based ACO (Ant Colony Optimization) algorithm is proposed where (nearly) all pheromone information corresponds to solutions that are members of the actual population. Advantages of the population based approach are that it seems promising for solving dynamic optimization problems, its finite state space and the chances it offers for designing new metaheuristics. We compare the behavior of the new approach to the standard ACO approach for several instances of the TSP and the QAP problem. The results show that the new approach is competitive.
author: id19instance
author: id33instance
booktitle: Applications of Evolutionary Computing - Evo Workshops 2002: EvoCOP, EvoIASP, EvoSTIM/EvoPLAN
is about: id5instance
pages: 72-81
series: LNCS
title: A Population based Approach for ACO
volume: 2279
year: 2002

id1030instance
type: InProceedings
type: Publication
address: Porto/Portugal
author: id1876instance
author: id2083instance
booktitle: Proc. IADIS Int. Conference e-Commerce 2005
is about: id20instance
month: December
title: Model-Based Pricing of E-Learning
year: 2005

id1031instance
type: InCollection
type: Publication
author: id1876instance
booktitle: Process-Aware Information Systems. Bridging People and Software through Process Technology
is about: id106instance
pages: 21-36
title: Person-to-Application Processes: Workflow Management
year: 2005

id1032instance
type: InProceedings
type: Publication
abstract: DeepaMehta is an open source semantic desktop application based on the topic maps standard. It’s conceptualisation and especially the innovative graph-based user interface have been guided by findings in cognitive psychology in order to provide a cognitively adequate working environment for knowledge workers of all kind. DeepaMehta aims to evolve nowadays’ separated desktop applications into an integrated workspace enabling the user to organize, describe and relate information objects like text notes, external documents and media, browse the web, search databases and create semantic networks - all this in one seamless, semantics-enabled desktop environment.
author: id2076instance
author: id2115instance
author: id658instance
booktitle: Proceedings of the 1st Workshop on The Semantic Desktop. 4th International Semantic Web Conference (Galway, Ireland)
is about: id102instance
is about: id104instance
is about: id53instance
is about: id81instance
is about: id86instance
month: November
title: DeepaMehta - A Semantic Desktop
volume: 175
year: 2005

id1034instance
type: InProceedings
type: Publication
author: id1876instance
author: id2040instance
author: id2072instance
author: id2126instance
author: id32instance
author: id57instance
author: id90instance
author: id160instance
author: id165instance
author: id167instance
author: id168instance
author: id186instance
author: id187instance
author: id210instance
author: id212instance
author: id213instance
author: id214instance
author: id217instance
author: id218instance
author: id660instance
author: id661instance
author: id662instance
author: id663instance
author: id664instance
author: id665instance
author: id666instance
booktitle: INFORMATIK 2005 - Informatik LIVE! Band 2, Beiträge der 35. Jahrestagung der Gesellschaft für Informatik e.V. (GI), Bonn
has project: id32instance
is about: id117instance
is about: id119instance
is about: id136instance
is about: id79instance
is about: id80instance
month: September
series: LNI
title: Fachinformationssystem Informatik (FIS-I) und Semantische Technologien für Informationsportale (SemIPort)
volume: 68
year: 2005

id1035instance
type: InProceedings
type: Publication
abstract: Finding related publications and their correct bibliographical data is getting harder and harder due to the mass of unrequested information and the decreasing precision of many information providers. The DBLP Computer Science Bibliography is a service used by thousands of computer scientists which provides fundamental support for scientists searching for publications or other scientists in similar communities. This paper describes a user–friendly interface which plays the central role in searching, browsing, and mining of bibliographical data. After introducing the concept of multi-layered browsing and an integrated smart component for entering new data, DBL–Browser itself and various visualisations are described.
author: id2126instance
author: id163instance
author: id164instance
author: id167instance
author: id168instance
author: id663instance
booktitle: INFORMATIK 2004 - Informatik verbindet, Band 2, Beiträge der 34. Jahrestagung der Gesellschaft für Informatik e.V. (GI), Ulm
has project: id32instance
has project: id36instance
is about: id117instance
is about: id119instance
is about: id136instance
is about: id52instance
is about: id79instance
is about: id80instance
month: September
pages: 193-197
series: LNI
title: Visualising and Mining Digital Bibliographic Data
volume: 51
year: 2004

id1036instance
type: Publication
type: TechnicalReport
abstract: Ontology Engineering is currently advancing from a pure research topic to real applications. This state of the art is emphasized by the wide range of European projects with major industry involvement and, in the same time, by the ever-growing interest of small and medium size enterprizes asking for consultancy in this domain. A core requirement in all of these efforts is, however, the availability of proved and tested methods which allow an emph{efficient} engineering of high-quality ontologies, be that by reuse, new building or automatic extraction methods. Several elaborated methodologies, which aid the development of ontologies for particular application requirements, emerged in the last decades. Nevertheless, in order for ontologies to be built and deployed at a large scale, beyond the boundaries of the academic community, one needs not only technologies and tools to assist the engineering process, but also means to estimate and control its overall costs. These issues are addressed only marginally by current engineering approaches though their importance is well recognized in the community. Different approaches exist to estimate costs for engineering processes. We will present the parametric cost estimation model ONTOCOM and its alignment with the DILIGENT engineering methodology. Based on the resulting cost function some analytical evaluations of application scenarios for the DILIGENT model are provided.
author: id83instance
author: id668instance
has project: id42instance
has project: id43instance
is about: id123instance
is about: id150instance
is about: id69instance
is about: id70instance
is about: id79instance
month: October
series: TR-B-05-20
title: How Much Does It Cost? Applying ONTOCOM to DILIGENT
year: 2005

id1037instance
type: Publication
type: TechnicalReport
author: id2076instance
author: id20instance
author: id465instance
author: id636instance
author: id669instance
author: id670instance
author: id671instance
author: id673instance
author: id674instance
author: id676instance
author: id678instance
has project: id43instance
is about: id79instance
is about: id80instance
month: December
series: 231
title: Specification of a methodology for syntactic and semantic versioning (D231)
type: Deliverable
year: 2004

id1038instance
type: Article
type: Publication
author: id2023instance
author: id2067instance
author: id6instance
author: id80instance
author: id83instance
author: id279instance
author: id394instance
author: id487instance
author: id679instance
author: id81instance
has project: id30instance
has project: id55instance
is about: id123instance
is about: id79instance
journal: Journal of Web Semantics
note: Elsevier, Amsterdam
number: 1
pages: 99--103
title: Bibster - A Semantics-Based Bibliographic Peer-to-Peer System
volume: 2
year: 2005

id1039instance
type: Book
type: Publication
editor: id2084instance
editor: id680instance
isbn: 3-87005-067-5
month: October
title: Begabtenförderung im MINT-Bereich 12
year: 2005

id103instance
type: InProceedings
type: Publication
abstract: Population based ACO algorithms for dynamic optimization problems are studied in this paper. In the population based approach a set of solutions is transferred from one iteration of the algorithm to the next instead of transferring pheromone information as in most ACO algorithms. The set of solutions is then used to compute the pheromone information for the ants of the next iteration. The population based approach can be used to solve dynamic optimization problems when a good solution of the old instance can be modified after a change of the problem instance so that it represents a reasonable solution for the new problem instance. This is tested experimentally for a dynamic TSP and dynamic QAP problem. Moreover the behavior of different strategies for updating the population of solutions are compared.
author: id19instance
author: id33instance
booktitle: Ant Algorithms, Proceedings of Third International Workshop ANTS 2002
is about: id5instance
pages: 111-122
series: LNCS
title: Applying Population based ACO to Dynamic Optimization Problems
volume: 2463
year: 2002

id1040instance
type: InCollection
type: Publication
author: id2084instance
booktitle: Begabtenförderung im MINT-Bereich Band 12
month: October
pages: 49-56
title: Automatisiertes Schließen mit formalen Begriffen: Mathematische Grundlagen
year: 2005

id1041instance
type: InCollection
type: Publication
author: id2084instance
author: id681instance
booktitle: Begabtenförderung im MINT-Bereich Band 12
month: October
pages: 57-62
title: Automatisiertes Schließen mit formalen Begriffen: Implementierung
year: 2005

id1042instance
type: InProceedings
type: Publication
address: Dijon, France
author: id2078instance
author: id281instance
booktitle: Proc. of the 21st Annual ACM Symposium on Applied Computing (SAC'06)
has project: id39instance
has project: id42instance
has project: id51instance
is about: id119instance
is about: id25instance
month: April
note: (to appear)
title: Trading Services in Ontology-driven Markets
year: 2006

id1044instance
type: Misc
type: Publication
abstract: Developers familiar with object oriented programming languages have to make a paradigm shift in order to produce and manage data usable on the Semantic Web (e.g. RDF). In this paper we describe the tool RDFReactor which transforms a given ontology in RDF Schema into a familiar, dynamic, object-oriented Java API -- at the push of a button. Developers then are able to interact with java instances, thus allowing them to stay in their own world. The generated proxy objects contain no state and delegate all method calls to RDF model updates and queries. RDFReactor potentially turns every Java developer into a Semantic Web application developer and enables them to use RDF correctly, efficiently and effectively without even knowing it. It is downloadable (GNU LGPL) at http://rdfreactor.ontoware.org .
author: id2076instance
author: id20instance
has project: id43instance
has project: id49instance
howpublished: Poster and Demo at International Semantic Web Conference (ISWC) 2005, Galway, Ireland
is about: id79instance
is about: id80instance
month: November
title: RDFReactor - From Ontologies to Programmatic Data Access
year: 2005

id1045instance
type: Misc
type: Publication
abstract: In this demo we present FOAM, a novel tool for aligning and mapping ontologies. It is based on latest research efforts and shows very promising results. The tool is briefly explained and pointers to actual applications are given. The Framework for Ontology Alignment and Mapping (FOAM) is available through its webpage http://www.aifb.uni-karlsruhe.de/WBS/meh/foam . On the page one can find links to relevant publications, a download section of binaries and source code, installation guidelines and the documentation of FOAM, and some ontologies to test the tool. Further, there is a web-interface for internet users interested in very shallow testing. For real use we recommend downloading it. Requests for the tool have come from around the world.
author: id20instance
author: id80instance
has project: id42instance
has project: id43instance
has project: id49instance
howpublished: Demo at ISWC2005
is about: id79instance
is about: id80instance
month: November
title: FOAM - A Framework for Ontology Alignment and Mapping
year: 2005

id1046instance
type: Misc
type: Publication
abstract: Most ontologies today exist in pure form without any additional information, e.g. authorship or domain specific information. The proposed Ontology Metadata Vocabulary (OMV) aims to establish a standard which enables users from academia and industry to identify, find and apply -- basically meaning to reuse -- ontologies effectively and efficiently. Our demo/poster contribution consists of the presentation of the up-and-running metadata portal ONTHOLOGY (``anthology of ontologies'') which implements the proposed OMV to support users in accessing and reusing of ontologies. OMV is available for download at http://ontoware.org/projects/omv/ , ONTHOLOGY is available at http://www.onthology.org/ .
author: id20instance
author: id90instance
has project: id43instance
has project: id49instance
howpublished: Poster and Demo at ISWC2005
is about: id79instance
is about: id80instance
month: November
title: Facilitating Ontology Reuse with ONTHOLOGY
year: 2005

id1047instance
type: Misc
type: Publication
abstract: Progress in the development of the Information Society has seen a truly revolutionary decade, with the advent of widespread networked information services. A new social revolution is imminent, involving the transition from Information Society to Knowledge Society. The EU IST project ``Semantically Enabled Knowledge Technologies (SEKT)'' (see http://www.sekt-project.com/ ) aims to position the EU IT industry at the core of this, by developing the essential semantic knowledge technologies for realizing the European Knowledge Society.
author: id20instance
author: id57instance
author: id633instance
author: id6instance
has project: id42instance
has project: id49instance
howpublished: Poster at ISWC2005
is about: id102instance
is about: id104instance
is about: id68instance
is about: id79instance
month: November
title: SEKT - Semantically Enabled Knowledge Technologies
year: 2005

id1048instance
type: InProceedings
type: Publication
abstract: In the IST project SEKT – Semantically Enabled Knowledge Technologies – one of the case studies [BCC+05] aims at providing an intelligent Frequently Asked Questions system, Iuriservice prototype II, that will offer help to newly appointed judges in Spain. This iFAQ uses ontology based Semantic Web technologies to retrieve FAQ to reply queries posed in natural language. In order to construct the underlying ontology, we used the ontology engineering methodology DILIGENT. DILIGENT [PTSS04] methodology is intended to support domain experts in a distributed setting to engineer and evolve ontologies with the help of a fine-grained methodological approach based on Rhetorical Structure Theory [MT87]. Although, knowledge acquisition and other content issues are not discussed in this paper, harmonization efforts for knowledge modelling are required by discussing the ontology. During the discussion, participants exchange arguments which may support or object to certain ontology engineering decisions. As any legal professional knows, tracking the argumentation of decisions is essential in allowing later readers to understand them. We will present an evaluation framework to evaluate the methodology within this particular context. We will take a detailed look at the development of the ontology and especially the novel experience of using a wiki to support the collaborative ontology engineering and to capture the ongoing discussion of the ontology. First results of this evaluation will be presented.
address: Granada, Spain
author: id2055instance
author: id2097instance
author: id20instance
author: id83instance
author: id682instance
author: id683instance
booktitle: IVR 22nd World Congress - Law and Justice in a Global Society
has project: id42instance
has project: id49instance
is about: id115instance
is about: id150instance
is about: id69instance
is about: id70instance
month: May
note: Artificial Intelligence and Law
number: B4
pages: 330--331
title: Evaluating DILIGENT Ontology Engineering in a Legal Case Study
year: 2005

id1049instance
type: InProceedings
type: Publication
abstract: In the legal domain, ontologies enjoy quite some reputation as a way to model normative knowledge about laws and jurisprudence. Several methods have been used and are well-known qua ontological methods. However, no previous attempt to construct ontologies based on professional knowledge exists, capturing judicial practical expertise. This paper shows the preliminary ontology development for the second version of the prototype Iuriservice, a web based intelligent FAQ for judicial use, containing a repository of professional judicial knowledge. The iFAQ system will focus on such knowledge and will base on OPLK —Ontology of Professional Legal Knowledge— developed by UAB. Profesional Legal Knowledge refers to the core of professional work that contains the experience of the daily treatment of cases and is unevenly distributed within individuals as a result of their professional and personal experiences. The knowledge acquisition process has been based on an ethnographic process designed by the UAB team and the Spanish School of the Judiciary within the national SEC project, to efficiently obtain useful and representative information from questionnaire-based interviews. Nearly 800 competency questions have been extracted from these interviews and the ontology is being modelled from the selection of relevant terms. Regarding ontology modelling issues, we have followed the DILIGENT argumentation methodology to control the discussion and trace the arguments used in favor or against the introduction of a concept X as part of the domain ontology. This paper presents the preliminary Ontology of Professional Judicial Knowledge (OPJK) that has been extracted manually from the selection of relevant terms from nearly 200 competency questions and affirms that the modelling of this professional judicial knowledge demands the description of this knowledge as it is perceived by the judge and the abandonment of dogmatic legal categorizations.
address: Bologna, Italy
author: id2097instance
author: id83instance
author: id174instance
author: id682instance
author: id683instance
booktitle: LOAIT - Legal Ontologies and Artificial Intelligence Techniques
has project: id42instance
has project: id49instance
is about: id150instance
is about: id68instance
is about: id69instance
is about: id70instance
month: May
pages: 121--134
series: IAAIL Workshop Series
title: OPJK modeling methodology
volume: 4
year: 2005

id104instance
type: Article
type: Publication
author: id37instance
author: id33instance
has project: id9instance
is about: id5instance
is about: id76instance
is about: id77instance
journal: Genetic Programming and Evolvable Machines
number: 4
pages: 345-361
title: Fast Ant Colony Optimization on Runtime Reconfigurable Processor Arrays
volume: 3
year: 2002

id1050instance
type: InProceedings
type: Publication
abstract: The web ontology language OWL is still a very young language. Experience with the language will build an increasing pool of ontology design patterns and best practises. In this paper we introduce macros for OWL ontologies. Macros are able to formally specify and capture design patterns for the knowledge engineering task with OWL ontologies. Thus the user is enabled to conveniently reuse them. Macros lead to an enhanced maintainability of the ontology, to a higher level of abstraction in the specification (and thus closer to the human conceptualization), to a faster and less error-prone creation of the ontology (and thus to lower costs) and to automation of several tedious tasks in the ontology life cycle. We present example macros, discuss further applications, advantages and problems of macros, and discuss the development of an implementation to enable the usage of macros.
address: Galway, Ireland
author: id2097instance
booktitle: Proceedings of the Ontology Patterns for the Semantic Web Workshop at the ISWC 2005
has project: id42instance
has project: id49instance
is about: id105instance
is about: id29instance
is about: id53instance
is about: id69instance
is about: id70instance
is about: id79instance
is about: id80instance
month: November
title: Explicit Knowledge Engineering Patterns with Macros
year: 2005

id1051instance
type: InProceedings
type: Publication
abstract: In the legal domain, ontologies enjoy quite some reputation as a way to model normative knowledge about laws and jurisprudence. While there is a multitude of ontological models to represent theoretical legal knowledge, no previous attempt to construct ontologies based on professional knowledge exists, capturing judicial expertise. We define the epistemological and ontological levels as separate issues. This paper shows the preliminary ontology development for the second version of the prototype Iuriservice, a web based intelligent FAQ for judicial use containing a repository of professional judicial knowledge, within the IST project SEKT. The iFAQ system will focus on such knowledge and will base on OPLK – Ontology of Professional Legal Knowledge – developed by Universitat Autonoma de Barcelona. LPK refers to the core of professional work that contains the experience of the daily treatment of cases and is unevenly distributed within individuals as a result of their professional and personal experiences. Judges had a strong and thorough education and became experts in their domain, but they still often seek the help of senior judges or tutors to solve on-duty problems. The knowledge acquisition process has been based on an ethnographic process designed by the UAB team and the Spanish School of the Judiciary within the national SEC project, to efficiently obtain useful and representative information from questionnaire-based interviews. Nearly 800 competency questions have been extracted from these interviews and the ontology is being modelled from the selection of relevant terms. Once the terms are identified, the relevant relations between those terms need also to be identified, following a middle-out strategy. Regarding ontology modelling issues, some other changes have been introduced into Iuriservice prototype II. First, several KAON applications, such as the ontology editor Oi- Modeler, have been used in order to model and visualize the domain ontology. Second, w…
address: Granada, Spain
author: id2097instance
author: id20instance
author: id682instance
author: id683instance
author: id684instance
author: id685instance
booktitle: XXII World Congress of Philosophy of Law and Social Philosophy - Workshop on Artificial Intelligence and Law: The regulation of electronic social systems. Law and the Semantic Web
has project: id42instance
has project: id49instance
is about: id115instance
is about: id150instance
is about: id69instance
is about: id70instance
month: May
note: Artificial Intelligence and Law
number: B4
pages: 327--328
title: Iuriservice II Ontology Development
year: 2005

id1052instance
type: Publication
type: TechnicalReport
abstract: Currently, the variety of expressive extensions and different semantics created for logic programs with negation is diverse and heterogeneous, and there is a lack of comprehensive comparative studies which map out the multitude of perspectives in a uniform way. Most recently, however, new methodologies have been proposed which allow one to derive uniform characterizations of different declarative semantics for logic programs with negation. In this paper, we study the relationship between two of these approaches, namely the level mapping characterizations due to [Hitzler and Wendt 2005], and the selector generated models due to [Schwarz 2004]. We will show that the latter can be captured by means of the former, thereby supporting the claim that level mappings provide a very flexible framework which is applicable to very diversely defined semantics.
author: id2084instance
author: id498instance
has project: id50instance
has project: id70instance
is about: id105instance
is about: id129instance
is about: id130instance
is about: id53instance
is about: id55instance
is about: id58instance
month: November
title: Towards a unified theory of logic programming semantics: Level mapping characterizations of selector generated models
year: 2005

id1053instance
type: InProceedings
type: Publication
author: id83instance
is about: id123instance
is about: id139instance
is about: id150instance
is about: id69instance
is about: id70instance
is about: id79instance
month: November
note: Graduiertenkolloquium Angewandte Informatik, Karlsruhe, 04.11.2005
title: Ontologieentwicklung und -anwendung im dezentralen Wissensmanagement.
year: 2005

id1054instance
type: InProceedings
type: Publication
abstract: The scientific paradigms of the Semantic Web, Web Services, Agents, Peer-to-Peer Networks and Grid Computing are currently receiving a lot of attention in the research community, and are producing solutions to important problems ranging from e-science to e-business. The United States DAML program, the European Commission and other organisations have also been investing heavily in these technologies. This Dagstuhl Seminar on Semantic Grid brought together world-leading experts from the diverse organizations and research areas. It strengthened the international collaboration with the aim to realize the vision of the Semantic Grid.
author: id20instance
author: id625instance
author: id686instance
booktitle: Semantic Grid - Convergence of Technologies
has project: id42instance
has project: id43instance
has project: id49instance
is about: id120instance
is about: id79instance
month: August
series: Dagstuhl Seminar Proceedings (DROPS)
title: Report on the Semantic Grid Dagstuhl Seminar
volume: 05271
year: 2005

id1055instance
type: InProceedings
type: Publication
abstract: Wikipedia is the world's largest collaboratively edited source of encyclopaedic knowledge. But in spite of its utility, its contents are barely machine-interpretable. Structural knowledge, e.g. about how concepts are interrelated, can neither be formally stated nor automatically processed. Also the wealth of numerical data is only available as plain text and thus can not be processed by its actual meaning. We provide an extension to be integrated in Wikipedia, that allows the typing of links between articles and the specification of typed data inside the articles in an easy-to-use manner. Enabling even casual users to participate in the creation of an open semantic knowledge base, Wikipedia has the chance to become a resource of semantic statements, hitherto unknown regarding size, scope, openness, and internationalisation. These semantic enhancements bring to Wikipedia benefits of today's semantic technologies: more specific ways of searching and browsing. Also, the RDF export, that gives direct access to the formalised knowledge, opens Wikipedia up to a wide range of external applications, that will be able to use it as a background knowledge base. In this paper, we present the design, implementation, and possible uses of this extension.
author: id2076instance
author: id2097instance
author: id2107instance
author: id2115instance
author: id57instance
booktitle: Proceedings of the 15th international conference on World Wide Web, WWW 2006, Edinburgh, Scotland, May 23-26, 2006
has project: id42instance
has project: id43instance
has project: id50instance
has project: id67instance
has project: id75instance
is about: id100instance
is about: id104instance
is about: id107instance
is about: id137instance
is about: id48instance
is about: id52instance
is about: id53instance
is about: id68instance
is about: id79instance
is about: id80instance
is about: id81instance
month: May
title: Semantic Wikipedia
year: 2006

id1056instance
type: InProceedings
type: Publication
abstract: Current Wiki engines are mostly monolithic applications which intermingle parser, user interface and data management backend. In this paper we show how these three components can be realised as lightweight, REST-style web services. We explain why this separation is useful and how the wiki community benefits from such an approach. Additionally, the presented wiki allows semantic statements and queries over the model.
address: San Diego, USA
author: id2076instance
booktitle: Proceedings of the First International Symposium on Wikis
has project: id43instance
has project: id49instance
is about: id100instance
is about: id102instance
is about: id104instance
is about: id107instance
is about: id135instance
is about: id136instance
is about: id29instance
is about: id80instance
is about: id85instance
month: October
title: SemWiki - A RESTful Distributed Wiki Architecture
year: 2005

id1057instance
type: InProceedings
type: Publication
abstract: Knowledge sharing in a virtual organization requires a knowledge life cycle including knowledge provisioning, terminology alignment, determination of resource location, query routing, and query answering. In this talk we focus on the issue of determining a relevant resource in a completely decentralized setting such as necessitated by peer-to-peer knowledge management in virtual organizations. Requirements for this task include, e.g., full autonomy of peers as well as full control over own resources and therefore preclude prominent resource location and query routing schemes such as distributed hash tables. In order to tackle given requirements we use a resource location and query routing approach that exploits social metaphors of topical experts and experts’ experts as well as semantic similarity of queries and information sources. The approach has been fully tested in simulation runs and partially implemented in the system Bibster (http://bibster.semanticweb.org).
author: id6instance
author: id83instance
author: id103instance
booktitle: Multiagent System Technologies: Third German Conference, MATES 2005, Koblenz, Germany, September 11-13, 2005. Proceedings
has project: id30instance
has project: id55instance
is about: id123instance
is about: id139instance
is about: id79instance
month: September
pages: 15-26
series: Lecture Notes in Computer Science (LNCS)
title: Semantic Methods for P2P Query Routing
volume: 3550 / 2005
year: 2005

id1058instance
type: InProceedings
type: Publication
abstract: Semantically rich descriptions of web services enable automatic composition and matchmaking. End users as well as providers compose web services according to their needs. Since in general, there can be more than one possibilities (combinations of web services) to achieve a certain goal, a user has to decide which of the alternatives suits him the best. This leads to the requirement that the combinations of web services must be comparable. This can be achieved by aggregating web service attributes. Since the ranking of web service combinations depends on user's needs, capabilities and willingness for ivestment of resources, considering user preferences is important while calculating the rank of a web service composition. We show, how user preferences as well as aggregation information can be modeled in a formal way and how web service combinations can be ranked automatically based on this information.
address: Amsterdam, Netherlands
author: id2078instance
author: id91instance
booktitle: ICSOC Workshop on Dynamic Web Processes
has project: id38instance
has project: id39instance
has project: id42instance
has project: id51instance
is about: id119instance
is about: id24instance
is about: id25instance
is about: id37instance
month: December
pages: 1-12
title: User Preference based Automated Selection of Web Service Compositions
year: 2005

id1059instance
type: InProceedings
type: Publication
abstract: Logic programming has always been a major ontology modeling paradigm, and is frequently being used in large research projects and industrial applications, e.g., by means of the F-Logic reasoning engine OntoBroker or the TRIPLE query, inference, and transformation language and system. At the same time, the Web Ontology Language OWL has been recommended by the W3C for modeling ontologies for the web. Naturally, it is desirable to investigate the interoperability between both paradigms. In this paper, we do so by studying an expressive fragement of OWL DL for which reasoning can be reduced to the evaluation of Horn logic programs. Building on the KAON2 algorithms for transforming OWL DL into disjunctive Datalog, we give a detailed account of how and to what extent OWL DL can be employed in standard logic programming systems. En route, we derive a novel, simplified characterization of the supported fragment of OWL DL.
address: Athens, Georgia
author: id2084instance
author: id2097instance
author: id2107instance
author: id611instance
booktitle: Proceedings of the Second International Conference on Rules and Rule Markup Languages for the Semantic Web, RuleML2006
has project: id42instance
has project: id50instance
has project: id70instance
is about: id129instance
is about: id53instance
is about: id79instance
month: November
pages: 17--26
title: How to reason with OWL in a logic programming system
year: 2006

id105instance
type: Article
type: Publication
author: id29instance
author: id37instance
author: id33instance
has project: id9instance
is about: id22instance
is about: id5instance
journal: IEEE Transactions on Evolutionary Computation
number: 4
pages: 333-346
title: Ant Colony Optimization for Resource-Constrained Project Scheduling
volume: 6
year: 2002

id1060instance
type: InProceedings
type: Publication
address: Covilha, Portugal
author: id2055instance
author: id83instance
author: id687instance
author: id688instance
booktitle: Progress in Artificial Intelligence: 12th Portuguese Conference on Artificial Intelligence, EPIA 2005
has project: id49instance
is about: id69instance
is about: id70instance
month: December
note: Building and Applying Ontologies for the Semantic Web (BAOSW 2005)
pages: 205
series: Lecture Notes in Computer Science (LNCS)
title: Introduction
volume: 3808 / 2005
year: 2005

id1061instance
type: InProceedings
type: Publication
abstract: The Semantic Web brings powerful languages for creating models, based on Description Logics and Rules. These languages are used within ontology engineering tools and applied in strong and efficient reasoners. Working within the context of a Summer School, we explored these technologies by creating a small and easy to understand example, working firstly with OWL alone, and introducing SWRL rules as needed, to automatically classify a number of instances according to some intuitively simple criteria. We present the example OWL ontology, SWRL rules, and the issues and problems we encountered. Our experience highlights the capabilities and limitations of OWL and of SWRL, not in theoretical but in practical terms, and points to the need for better tool support, but is primarily a lesson in ”traps for young players” in terms of formulating classifications, that we hope will be instructive for Semantic Web students following in our footsteps, and their tutors.
address: Galway, Ireland
author: id2097instance
author: id689instance
author: id690instance
author: id97instance
booktitle: OWL: Experiences and Directions
has project: id42instance
has project: id43instance
has project: id49instance
is about: id100instance
is about: id105instance
is about: id150instance
is about: id29instance
is about: id53instance
is about: id56instance
is about: id61instance
is about: id69instance
is about: id70instance
month: November
title: Pushing the limits of OWL, Rules and Protege - A simple example
year: 2005

id1062instance
type: InProceedings
type: Publication
abstract: Today's web sites closely intertwine services with visual markup. Web page operators are unlikely to change this, as they depend on advertising revenues. wal enables average users to build web service wrappers for existing pages. By spawning many basic web services, this prepares the ground for the next wave of compound web services.
address: V{"a}xj{"o}, Sweden
author: id2076instance
author: id691instance
booktitle: NCWS 2003
is about: id100instance
is about: id136instance
month: November
title: From Web Pages to Web Services with wal
year: 2003

id1063instance
type: Misc
type: Publication
author: id2076instance
howpublished: Diplomarbeit
is about: id100instance
is about: id136instance
month: May
title: Extraktion von XML aus HTML-Seiten -- Das WYSIWYG-Werkzeug d2c
year: 2003

id1064instance
type: Publication
type: TechnicalReport
abstract: Managing knowledge is crucial in our economy. We derive requirements on personal knowledge management (finding, reminding, collaboration, knowledge re-use and cognitively adequate interfaces) from cognitive psychological research and analyse the limitations of current solutions. We introduce a RESTful, wiki-based, open architecture for semantic personal knowledge management that fulfills the analysed requirements to a high extent and gives the user a uniform way to work with knowledge on all layers (syntax, structure, formal semantics). We discuss architectural considerations and describe two implementations.
author: id2076instance
author: id692instance
has project: id43instance
has project: id49instance
has project: id67instance
is about: id100instance
is about: id102instance
is about: id104instance
is about: id105instance
is about: id137instance
is about: id52instance
is about: id53instance
is about: id79instance
is about: id81instance
is about: id98instance
month: December
title: Personal Knowledge Management with Semantic Wikis
year: 2005

id1065instance
type: InProceedings
type: Publication
abstract: We present a MOF compliant metamodel and UML profile for the Semantic Web Rule Language (SWRL) that integrates with our previous work on a metamodel and UML profile for OWL DL. Based on this metamodel and profile, UML tools can be used for visual modelling of rule-extended ontologies.
address: Budva, Montenegro
author: id2023instance
author: id2077instance
author: id2084instance
author: id57instance
booktitle: The Semantic Web: Research and Applications
has project: id39instance
has project: id42instance
is about: id69instance
month: June
pages: 303-316
series: LNCS
title: A Metamodel and UML Profile for Rule-extended OWL DL Ontologies
volume: 4011
year: 2006

id1066instance
type: Article
type: Publication
abstract: Both OWL-DL and function-free Horn rules are decidable fragments of first-order logic with interesting, yet orthogonal expressive power. A combination of OWL-DL and rules is desirable for the Semantic Web; however, it might easily lead to the undecidability of interesting reasoning problems. Here, we present a decidable such combination where rules are required to be DL-safe: each variable in the rule is required to occur in a non-DL-atom in the rule body. We discuss the expressive power of such a combination and present an algorithm for query answering in the related logic SHIQ extended with DL-safe rules, based on a reduction to disjunctive programs.
author: id2111instance
author: id57instance
author: id484instance
journal: Journal of Web Semantics: Science, Services and Agents on the World Wide Web
month: July
number: 1
pages: 41--60
title: Query Answering for OWL-DL with Rules
volume: 3
year: 2005

id1067instance
type: InProceedings
type: Publication
address: Leeds, U.K.
author: id12instance
author: id2039instance
author: id2042instance
author: id501instance
booktitle: Mobile Information Systems II (Proceedings of the IFIP TC8 Working Conference on Mobile Information Systems 2005 (MOBIS))
has project: id34instance
is about: id108instance
month: December
pages: 287-301
title: A System for Mobile and Wireless Advertising
year: 2005

id1068instance
type: InProceedings
type: Publication
abstract: Substantial effort is currently being made by the e-Skills community and involved stakeholders to establish a common European Framework for e-Skills (or more specific ICT Skills) and competences in Europe. ICT skills/competence frameworks are an important prerequisite for ICT competence development and related quality assurance for recognition and transferability of qualifications. The framework aims to provide a common language that allows describing e-Skills by means of ICT (Information and Communications Technology) worker profiles. Though a number of frameworks exist today, mobility of ICT workers and learning across boundaries is being hampered by the observable divergence of the different approaches. It is in this light that the prior objective of the European Commission and Cedefop is to support the developments towards an overarching framework that supports transparency, mobility, and recognition for e-skills and related qualifications; and that will primarily allow learning across boundaries. The authors jointly with Cepis1 have made substantial inputs to the prevailing development process and the work within the CEN/ISSS Workshop ICT Skills.2 The paper presents insights in the related research work undertaken and run investigations.
author: id2062instance
author: id38instance
author: id99instance
booktitle: The Internet & Information Technology in Modern Organizations
has project: id57instance
is about: id20instance
month: December
title: Learning across Boundaries: Developments towards a European Framework for ICT Skills
year: 2005

id1069instance
type: InProceedings
type: Publication
abstract: In this paper the bases as well as the procedure of the introduction of a Learning Organisation (LO) in a company or an organisation are represented. The LO is regarded as part of the introduction of a knowledge information system; LO serves as supporting measure, in order to spread and develop the existing knowledge further in the company.
author: id38instance
author: id99instance
booktitle: The Internet & Information Technology in Modern Organizations
is about: id102instance
is about: id20instance
is about: id29instance
month: December
title: Model LOB-MUT: Build up a Learning Organisation
year: 2005

id1072instance
type: Misc
type: Publication
abstract: Der Wettbewerbsdruck nimmt stetig zu und der Markt wird immer härter umkämpft (z. B. wegen Sättigung der Märkte oder größerer Ähnlichkeit, Gleichheit und/oder kleinerem Lebenszyklen von Produkten). Unternehmen sind gezwungen, ihre vorhandenen Ressourcen möglichst optimal einzusetzen und ruhende Ressourcen zu aktivieren. Des Weiteren spielt der bewusste Umgang mit dem Produktionsfaktor Wissen eine immer größere Rolle bei der Gewinnung und auch beim Ausbau von Wettbewerbsvorteilen. Nur wer seine wissensbasierten Prozesse und Ressourcen optimal nutzt und einsetzt, wird sich auf lange Sicht im Wettbewerb behaupten können, indem das benötigte und relevante Wissen sowie Daten und Informationen möglichst aktuell und griffbereit gehalten werden, um schneller und kostengünstiger als die Konkurrenz agieren zu können.
author: id38instance
author: id99instance
howpublished: ISB aktuell (3/2005): S. 10-12
is about: id102instance
is about: id107instance
month: December
title: ADDED VALUE MANAGEMENT MIT WISKI (S)PUR
year: 2005

id1073instance
type: Publication
type: TechnicalReport
abstract: To build semantic web applications, developers must master three things at the same time: Their programming language, the semantic web languages (RDF, RDFS and OWL), and the web protocols (HTTP). This paper presents a framework, semweb4j, that turns Java developers into semantic web developers without requiring them to learn RDF, RDFS, HTTP or Servlets. We present a triple store abstraction layer (RDF2Go), an
author: id2076instance
has project: id43instance
is about: id100instance
is about: id104instance
is about: id105instance
is about: id119instance
is about: id136instance
is about: id52instance
is about: id53instance
is about: id79instance
is about: id80instance
is about: id85instance
is about: id87instance
month: December
title: Writing the Semantic Web with Java
year: 2005

id1074instance
type: InProceedings
type: Publication
abstract: Multiple certification programmes and systems are known in the ICT industries and other fields of application throughout Europe. Certification and quality standards in ICT education and training are extremely important for both employments in the ICT labour market and as a basis for a sustainable pro-fessional career. CEPIS studied and compared on behalf of Cedefop existing approaches to e-skills certification on European level. This paper presents se-lected preliminary survey results contributing to the current debate on the pro-motion of e-skills to economic competitiveness, better jobs and social cohesion. The study is supporting the current debate on ICT skills frameworks and quality issues on the necessary increase of the attractiveness of this labour market seg-ment. The study takes focus on the investigation of existing modes, procedures, methods and institutions responsible for e-skills certification and on their inter-ests in sharing experience or increasing co-operation. The project aims to sup-port and recommend joint actions in order to allow for a European wide policy and practice for certification, quality assurance and standardisation.
address: Frankfurt, Germany
author: id2062instance
author: id38instance
author: id601instance
author: id602instance
booktitle: Towards European Standards for e-Skills and Qualifications
has project: id57instance
is about: id113instance
is about: id20instance
month: April
pages: 43-65
series: Workshop Proceedings 2004
title: e-Skills Certification in Europe: Voluntary Approaches to Setting European Level Quality Standards
volume: e2004 eChallenges
year: 2005

id1075instance
type: Proceedings
type: Publication
abstract: Zum 1. Mobile Business Day, der im Mai 2005 an der Universität Karlsruhe (TH) stattfand, trafen sich Praktiker und Wissenschaftler zum Gedankenaustausch. Sie loteten die gesamte Breite mobiler Anwendungen sowie ihre Einsatzmöglichkeiten und Grenzen aus, stellten die neuesten Ideen und Ergebnisse im Mobile Business vor und diskutierten Erfahrungen aus der Praxis und neue viel versprechende theoretische Ansätze. Die Veranstaltung wurde im Rahmen des Verbundprojektes
editor: id12instance
editor: id38instance
has project: id34instance
is about: id59instance
month: August
title: Perspektiven des Mobile Business, Mobile Business Day, Karlsruhe, 31.05.2005
year: 2005

id1076instance
type: Book
type: Publication
address: Norderstedt, Germany
author: id12instance
author: id693instance
author: id694instance
has project: id31instance
is about: id102instance
is about: id98instance
isbn: 3-8334-3532-1
month: November
title: CONsense: Kooperatives Wissensmanagement in virtuellen Organisationen
year: 2005

id1077instance
type: InProceedings
type: Publication
abstract: Successful knowledge management projects incorporate aspects from the following dimensions: processes, contents, corporate culture, information technologies (IT). IT has the role to facilitate storage, retrieval and presentation of information and is therefore often called an enabler. An inadequate use of IT can lead to the failure of a knowledge management project, cause considerable delays and detract from the motivation of the people involved.
author: id2065instance
author: id20instance
author: id60instance
author: id695instance
author: id95instance
booktitle: Professional Knowledge Management: Third Biennial Conference, WM 2005, Kaiserslautern, Germany, April 10-13, 2005, Revised Selected Papers
has project: id42instance
has project: id43instance
has project: id49instance
is about: id102instance
note: DOI: 10.1007/11590019_56
pages: 496 - 498
series: LNCS
title: Workshop on Intelligent IT Tools for Knowledge Management Systems: Applicability, Usability, and Benefits
volume: 3782
year: 2005

id1078instance
type: InProceedings
type: Publication
abstract: This paper presents a method for semantically aligning business processes. We provide a representation of Petri nets in the standard ontology language OWL DL, to semantically enrich the business processes. On top of this, we propose a technique for semantically aligning business processes to support inter-organizational business collaboration. This semantic alignment is improved by a background ontology. Therefore, we propose a specific UML Profile, which allows to visually model this background ontology. The different parts of our proposal, which reduces communication efforts and solves interconnectivity problems, are discussed in detail.
address: Paphos, Cyprus
author: id1876instance
author: id2072instance
author: id2077instance
author: id57instance
author: id80instance
booktitle: Proceedings of the Eighth International Conference on Enterprise Information Systems (ICEIS 2006)
has project: id39instance
has project: id42instance
is about: id12instance
is about: id41instance
is about: id69instance
month: May
pages: 191-196
title: Semantic Alignment of Business Processes
year: 2006

id1079instance
type: InCollection
type: Publication
abstract: The procedure model WISKI (S)PUR was developed within the cooperation project EWISU between the institute AIFB (http://www.aifb.uni-karlsruhe.de) and the company ISB AG Karlsruhe (http://www.isb-ag.de). With it you will be able to introduce a knowledge information system (WIS) into a company successfully and also you will be able to use this WIS successfully. The procedure model serves the support of the introduction of a WIS into a company or an organization. WISKI (S)PUR offers a framework for the efficient and actual establishment of a company&#8217;s specific knowledge information system. Furthermore, a phase model was developed for the introduction of a WIS into a company, as the case may be for the accomplishment of knowledge projects; WISKI (S)PUR is reflected in it. These both models are validated and are verified by knowledge projects in the ISB AG. The introduction of a Skill Matrix was selected as the pilot scheme on the basis of the need in the ISB AG. The generation and utilization of synergies by the implentation and combination of two further completed knowledge projects with the Skill Matrix will be described briefly in this paper.
author: id38instance
author: id99instance
booktitle: Professional Knowledge Management: Third Biennial Conference
is about: id9instance
month: December
pages: 729 - 735
series: Lecture Notes in Computer Science
title: Introduction of a Knowledge Information System in a SME, Skill Matrix as Pilot Scheme
volume: 3782 / 2005
year: 2005

id107instance
type: InProceedings
type: Publication
abstract: An approach for the evolution of a knowledge management system is discussed
author: id32instance
author: id53instance
booktitle: ECIS 2002 - The European Conference on Information Systems, Gdañsk, Poland, 2002
has project: id32instance
is about: id104instance
pages: 203-215
title: Evolution in ontology-based knowledge management systems
year: 2002

id1080instance
type: Book
type: Publication
abstract: Current middleware solutions, e.g., application servers and Web services, are very complex software products that are hard to tame because of intricacies of distributed systems. Their functionalities have mostly been developed and managed with the help of administration tools and corresponding configuration files, recently in XML. Though this constitutes flexibility for developing and administrating a distributed application, the conceptual model underlying the different configurations is only implicit. To remedy such problems, Semantic Management of Middleware contributes an ontology-based approach to support the development and administration of middleware-based applications. The ontology is an explicit conceptual model with formal logic-based semantics. Its descriptions may therefore be queried, may foresight required actions, or may be checked to avoid inconsistent system configurations. This book builds a rigorous approach towards giving the declarative descriptions of components and services a well-defined meaning by specifying ontological foundations and by showing how such foundations may be realized in practical, up-and-running systems.
address: New York
author: id79instance
has project: id28instance
has project: id50instance
is about: id119instance
is about: id135instance
is about: id136instance
is about: id70instance
is about: id79instance
is about: id85instance
isbn: 0-387-27630-0
month: February
series: The Semantic Web and Beyond
title: Semantic Management of Middleware
volume: I
year: 2006

id1081instance
type: InProceedings
type: Publication
author: id2instance
author: id36instance
author: id697instance
booktitle: Artificial Economics, Agent-Based Methods in Finance, Game Theory and Their Applications
has project: id2instance
is about: id3instance
pages: 3--14
series: Lecture Notes in Economics and Mathematical Systems
title: Time Series Properties from an Artificial Stock Market with a Walrasian Auctioneer
volume: 564
year: 2005

id1083instance
type: InCollection
type: Publication
author: id15instance
author: id16instance
author: id29instance
booktitle: Handbook of Bioinspired Algorithms and Applications
chapter: 10
is about: id65instance
pages: 147-156
title: A unified view on metaheuristics and their hybridization
year: 2005

id1084instance
type: InCollection
type: Publication
author: id15instance
author: id19instance
booktitle: Handbook of Bioinspired Algorithms and Applications
chapter: 3
is about: id5instance
pages: 41-54
title: Ant Colony Optimization
year: 2005

id1085instance
type: InCollection
type: Publication
author: id15instance
author: id44instance
booktitle: Multidisciplinary Scheduling; Theory and Applications
pages: 113-130
title: Task scheduling under gang constraints
year: 2005

id1086instance
type: Article
type: Publication
abstract: For many real-world optimization problems, the robustness of a solution is of great importance in addition to the solution's quality. By robustness, we mean that small deviations from the original design, e.g., due to manufacturing tolerances, should be tolerated without a severe loss of quality. One way to achieve that goal is to evaluate each solution under a number of different scenarios, and use the average solution quality as fitness. However, this approach is often impractical, because the cost for evaluating each individual several times is unacceptable. In this paper, we present a new and efficient approach to estimating a solution's expected quality and variance. Basically, we propose to construct local approximate models of the fitness function, and then use these approximate models to estimate expected fitness and variance. Based on a variety of test function, we demonstrate empirically that our approach significantly outperforms the implicit averaging approach as well as the explicit averaging approaches using existing estimation techniques reported in the literature.
author: id15instance
author: id2091instance
author: id525instance
has project: id59instance
is about: id154instance
journal: IEEE Transactions on Evolutionary Computation
month: August
number: 4
pages: 405- 420
title: Efficient Search for Robust Solutions by Means of Evolutionary Algorithms and Fitness Approximation
volume: 10
year: 2006

id1087instance
type: Article
type: Publication
abstract: Many real-world problems are dynamic, requiring an optimization algorithm which is able to continuously track a changing optimum over time. In this paper, we explore new variants of Particle Swarm Optimization (PSO) specifically designed to work well in dynamic environments. The main idea is to split the population of particles into a set of interacting swarms. These swarms interact locally by an exclusion parameter and globally through a new anti-convergence operator. In addition, each swarm maintains diversity either by using charged or quantum particles. The paper derives guidelines for setting the involved parameters and evaluates the multi-swarm algorithms on a variety of instances of the multi-modal dynamic moving peaks benchmark. Results are also compared to other PSO and evolutionary algorithm approaches from the literature, showing that the new multi-swarm optimizer significantly outperforms previous approaches.
author: id15instance
author: id553instance
is about: id31instance
journal: IEEE Transactions on Evolutionary Computation
number: 4
pages: 459-472
title: Multi-Swarms, exclusion, and anti-convergence in dynamic environments
volume: 10
year: 2006

id1088instance
type: Article
type: Publication
author: id15instance
author: id698instance
author: id699instance
is about: id30instance
journal: New Mathematics and Natural Computation
number: 3
pages: 359-369
title: Co-evolving business models: A case study with the internet service provider (ISP) industry
volume: 1
year: 2005

id1089instance
type: Article
type: Publication
author: id15instance
author: id44instance
is about: id30instance
is about: id31instance
journal: International Journal of Production Research
month: August
number: 15
pages: 3103-3129
title: Anticipation and flexibility in dynamic scheduling
volume: 43
year: 2005

id108instance
type: InProceedings
type: Publication
abstract: An approach for the evolution of knowledge maangement system is described
author: id32instance
author: id53instance
booktitle: EKAW 2002 Workshop on Knowledge Management through Corporate Semantic Webs, at 13th European Conference on Knowledge Engineering and Knowledge Management EKAW Madrid, Spain, 2002
has project: id32instance
is about: id68instance
pages: 22-37
title: An Approach for the Evolution of Ontology-based Knowledge Management Systems
year: 2002

id1090instance
type: Article
type: Publication
author: id15instance
author: id525instance
is about: id154instance
is about: id65instance
journal: IEEE Transactions on Evolutionary Computation
month: June
number: 3
pages: 303-318
title: Evolutionary optimization in uncertain environments - A survey
volume: 9
year: 2005

id1091instance
type: Article
type: Publication
author: id15instance
author: id145instance
author: id146instance
author: id33instance
is about: id154instance
journal: Transportation Science, INFORMS
month: August
number: 3
pages: 298-312
title: Waiting strategies for dynamic vehicle routing
volume: 39
year: 2005

id1092instance
type: Article
type: Publication
author: id15instance
journal: Soft Computing
number: 11
pages: 777
title: Editorial: Special issue on dynamic optimization problems
volume: 9
year: 2005

id1093instance
type: InProceedings
type: Publication
abstract: Selection procedures are used in many applications to select the best of a finite set of alternatives, as in discrete optimization with simulation. There are a wide variety of procedures, which begs the question of which selection procedure to select. This paper (a) summarizes the main structural approaches to deriving selection procedures, (b) describes an innovative empirical testbed, and (c) summarizes results from work in progress that provides the most exhaustive assessment of selection procedures to date. The most efficient and easiest to control procedures allocate samples with a Bayesian model for uncertainty about the means, and use a new expected opportunity cost-based stopping rule.
author: id15instance
author: id72instance
author: id700instance
booktitle: Winter Simulation Conference
is about: id154instance
month: December
pages: 708-717
title: New developments in ranking and selection: An empirical comparison of the three main approaches
year: 2005

id1094instance
type: Proceedings
type: Publication
editor: id15instance
editor: id518instance
editor: id519instance
editor: id520instance
editor: id521instance
editor: id522instance
editor: id523instance
editor: id524instance
editor: id525instance
editor: id527instance
editor: id696instance
month: April
series: LNCS
title: Applications of evolutionary computing: EvoWorkshops'05
volume: 3449
year: 2005

id1095instance
type: InProceedings
type: Publication
author: id15instance
author: id701instance
author: id702instance
booktitle: Genetic and Evolutionary Computation Conference
is about: id31instance
month: June
pages: 1433-1440
title: Towards an analysis of dynamic environments
volume: 2
year: 2005

id1096instance
type: InProceedings
type: Publication
author: id15instance
author: id703instance
author: id704instance
booktitle: Congress on Evolutionary Computation
title: Multiobjective optimization for dynamic environments
year: 2006

id1097instance
type: InProceedings
type: Publication
author: id15instance
author: id705instance
author: id706instance
booktitle: Metaheuristics International Conference
is about: id154instance
is about: id65instance
pages: 89-94
title: Particle swarm optimization and sequential sampling in noisy environments
year: 2005

id1098instance
type: Proceedings
type: Publication
editor: id15instance
editor: id528instance
editor: id709instance
editor: id710instance
is about: id63instance
month: November
title: Dagstuhl Workshop on Practical Approaches to Multi-Objective Optimization
year: 2005

id1099instance
type: Misc
type: Publication
author: id2048instance
author: id2instance
author: id33instance
howpublished: Quantitative Methods in Finance Conference, Book of Abstracts p. 90
is about: id78instance
month: December
note: Sydney, Australien
title: A Multi-objective Model Framework for the Integrated Management of Financial Risks
year: 2005

id109instance
type: InProceedings
type: Publication
abstract: Finding right information in the right moment is quite a tedious task on the Web. The main difficulty is the wrong context in which information is found and, therefore, part of the problem lies in the process of providing metadata about information resources on the web. In other words, only by searching for keywords, which are assigned to the content of an information resource, a machine agent cannot differ between various contexts of using these keywords, and some non-relevant resources will be retrieved as the result of the searching process. In this paper, we propose a method for improving the annotation of information resources – by forming conditional statements about keywords used in the describing content of a resource. This kind of annotation leads to the better precision of the information retrieval process – by expressing the context of searching in a more precise manner. Moreover, such more expressive form of describing content of information resources supports a more powerful knowledge sharing process enabling the discovery of new information by considering the combination of existing information resources. In that way, the system provides some answers which are not explicitly stated in the information repository. We present a knowledge management framework which implements such type of annotation and give a small evaluation study. The framework is based on using Semantic Web tools, which are developed at our Institute.
author: id32instance
booktitle: EKAW 2002 Workshop on Knowledge Management through Corporate Semantic Webs, at 13th European Conference on Knowledge Engineering and Knowledge Management EKAW
is about: id102instance
pages: 51-65
title: On the possibility to improve searching for knowledge using a more expressive form of annotation
year: 2002

id10instance
type: Book
type: Publication
author: id6instance
is about: id100instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id29instance
is about: id52instance
is about: id53instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id71instance
is about: id79instance
is about: id80instance
note: Cumulative Habilitation, University of Karlsruhe, May 2002 (German survey paper, 5 English contributions, German CV)
title: Wissensmanagement mit Ontologien und Metadaten (Knowledge Management with Ontologies and Metadata)
year: 2002

id1101instance
type: Misc
type: Publication
author: id2048instance
author: id2instance
author: id33instance
howpublished: 10th Symposium on Finance, Banking, and Insurance, Book of Abstracts p. 52
is about: id78instance
month: December
note: Universität Karlsruhe (TH)
title: Risk-Return Analysis with an Integrated Perspective on Market, Credit and Operational Risk
year: 2005

id1102instance
type: Publication
type: TechnicalReport
author: id2048instance
month: July
title: IP-Telefonie - Standards, Anwendungen und Analyse
year: 2001

id1103instance
type: Article
type: Publication
abstract: In this paper we investigate the capabilities of Genetic Algorithms applied to the domain of Knowledge Intensive Process Improvement (Knowiπ). Knowledge intensive processes (KnowiP) can be seen as sequences of activities based on know- ledge intensive acquisition and handling. Such knowledge intensive processes can be implemented in enterprises of different kind regardless of which type, production or service company. In order to measure the performance of knowledge intensive processes, performance indexes are necessary. The processes are evaluated according to these indexes. Two particular Genetic Algorithms (GAs) are applied to improve a special class of knowledge intensive processes. In a single-objective algorithm we aim at improving the duration of the process execution. Moreover, we address the presence of multiple evaluation criteria by a Multi-Objective Genetic Algorithm (MOGA) to find acceptable Pareto solutions as trade-offs. For our case, we investigate the Multi-Sexual GA (MSGA) considering the criteria service time, costs of acquisition and usage of knowledge sources simultaneously.
author: id28instance
author: id31instance
author: id99instance
journal: Journal of Universal Knowledge Management
month: November
number: 2
pages: 148-169
title: Towards Self-Organizing Knowledge Intensive Processes
volume: 0
year: 2005

id1105instance
type: InProceedings
type: Publication
abstract: Evidence for both, acceleration and deceleration of evolution through learning can be found in the literature. We suggest a selection gradient model that allows to predict whether acceleration or deceleration is predominant. The main idea is that learning alters the genotype-to-fitness landscape, which determines selection pressure. Assuming that fitness can be split up into an innate and a learned component, conditions for the occurrence of the Baldwin and the Hiding effect are derived. We introduce learning curves to analyse what we term lifetime fitness. The influence of the shape of the learning curve on the interaction between evolution and learning is analysed.
author: id2091instance
author: id711instance
author: id712instance
booktitle: Artificial Life X : Proceedings of the Tenth International Conference on the Simulation and Synthesis of Living Systems
has project: id59instance
is about: id55instance
is about: id84instance
month: August
pages: 500--506
title: On the Influence of Lifetime Learning on Selection Pressure
year: 2006

id1106instance
type: InCollection
type: Publication
author: id2097instance
author: id20instance
author: id83instance
booktitle: Semantic Web Technologies: Trends and Research in Ontology-based Systems
chapter: 9
has project: id42instance
is about: id150instance
is about: id69instance
is about: id70instance
title: Ontology Engineering Methodologies
year: 2006

id1107instance
type: Publication
type: TechnicalReport
abstract: This deliverable provides a methodology to determine an the knowledge management maturity level of an organization. This depends on the level of experience of the organization w.r.t. knowledge management from an organizational, human and technology perspective. For the technological aspects of KM the deliverable provides an elaborated set of guidelines for ontology engineering and application in SEKT: DILIGENT -- DIstributed, Loosely-controlled and evolvInG Engineering of oNTologies. The deliverable consists of the following building blocks: (i) a survey of relevant existing approaches to aforementioned topics, (ii) the DILIGENT process model and argumentation framework, (iii) a cost model to estimate the ontology building efforts, (iv) a process model to learn ontologies and (v) guidelines for the evaluation of the diligent process model.
author: id2055instance
author: id2097instance
author: id20instance
author: id83instance
author: id668instance
author: id93instance
has project: id42instance
is about: id150instance
is about: id69instance
is about: id70instance
is about: id79instance
month: January
series: 7.1.2
title: SEKT Methodology: Initial Framework and Evaluation of Guidelines
type: SEKT Deliverable
year: 2006

id1109instance
type: InProceedings
type: Publication
abstract: As CO2 emissions and sustainable energy production have entered the focus of attention in politics and industry, ecologically advantageous alternatives are strongly promoted. We address virtual power plants from an information technological, economic and legal perspective in order to enable decentralized sustainable generation. For the realization of virtual power plants we draw on a peer-to-peer infrastructure with market coordination and legal coverage to manage the distributed generation units and we focus on the combination of power and heat. Based on our prototype for a decentralized market platform, we examine the economic and ecological impacts of an increasing pervasiveness of distributed generation and virtual power plants as well as their potential influence on society. At the social level, we consider questions of local immission, but also of growing awareness for power issues. With regard to the ecology, we expect a reduction of overall primary energy demand resulting from reduced transmission and transformation losses and increased use of combined heat and power plants at a local level leading to a reduction of emissions. Finally, since local distributed generation makes more efficient use of primary energy and long-distance transport lines can be reduced, we expect lower costs for the complete system as well as reduced uncertainty with regard to amortization of investments. Besides a description of the methodology our presentation will include selected results.
author: id2045instance
author: id29instance
author: id460instance
author: id713instance
author: id714instance
author: id715instance
author: id716instance
author: id717instance
booktitle: Proceedings of the Annual International Sustainable Development Research Conference
has project: id38instance
is about: id22instance
month: June
note: nur auf CD erschienen
pages: 1-12
title: Impacts of Distributed Generation from Virtual Power Plants
volume: 11
year: 2005

id110instance
type: InProceedings
type: Publication
abstract: A system for knowledge management for the Semantic Web is described
author: id32instance
author: id53instance
booktitle: SemWeb@KR2002, Workshop on Formal Ontology, Knowledge Representation and Intelligent Systems for the World Wide Web, associated to KR’2002, Toulouse, 19-20 April 2002
is about: id69instance
title: An approach for knowledge management on the Semantic Web
year: 2002

id1110instance
type: InProceedings
type: Publication
author: id80instance
author: id649instance
booktitle: Proceedings of the Workshop on Integrating Ontologies
has project: id42instance
has project: id43instance
is about: id68instance
is about: id79instance
month: August
pages: 8
title: Relaxed Precision and Recall for Ontology Matching
volume: 156
year: 2005

id1111instance
type: InProceedings
type: Publication
author: id20instance
author: id80instance
booktitle: Proceedings of the Workshop on Integrating Ontologies
has project: id42instance
has project: id43instance
is about: id102instance
is about: id68instance
is about: id79instance
is about: id80instance
month: October
pages: 72--76
title: FOAM - Framework for Ontology Alignment and Mapping; Results of the Ontology Alignment Initiative
volume: 156
year: 2005

id1112instance
type: InProceedings
type: Publication
author: id20instance
author: id6instance
author: id80instance
booktitle: Professional Knowledge Management: Third Biennial Conference, WM 2005, Kaiserslautern, Germany, April 10-13, 2005, Revised Selected Papers
has project: id42instance
has project: id43instance
is about: id134instance
is about: id79instance
is about: id80instance
month: April
pages: 487-492
series: LNAI
title: Supervised Learning of an Ontology Alignment Process
volume: 3782
year: 2005

id1114instance
type: InCollection
type: Publication
author: id6instance
author: id80instance
booktitle: Semantic Web and Peer-to-Peer
chapter: Satisficing Ontology Mapp
has project: id30instance
has project: id42instance
has project: id43instance
is about: id79instance
month: January
year: 2006

id1115instance
type: InProceedings
type: Publication
author: id2120instance
author: id718instance
author: id719instance
booktitle: Proceedings of the 2005 IEEE International Conference on Web Services (ICWS 2005)
is about: id100instance
is about: id136instance
month: June
pages: 767-774
title: M2M Interface: A Web Services-based Framework for Cooperated Enterprise Management
year: 2005

id1116instance
type: Publication
type: TechnicalReport
abstract: The vision of SEKT is to develop and exploit the knowledge technologies which underlie Next Generation Knowledge Management. We envision knowledge workplaces where the boundaries between document management, content management, and knowledge management are broken down, and where knowledge management is an effortless part of day to day activities. SEKT is built around the synergy of the complementary know-how of the key European centres of excellence in Ontology and Metadata Technology, Knowledge Discovery, and Human Language Technology. The execution of SEKT is based on the integration of fundamental research, component development and integration driven by real world case studies in the public and private sectors. SEKT will provide new insights on knowledge technologies. The main objective of work package 7 is to provide a methodology for the application of Semantic Knowledge Technologies into enterprises in a goal-driven and process-oriented way. The developed SEKT methodology is applied and evaluated as part of the case studies. In this report we collect the feedback from the case study partners. We present the enhancements of the methodology and include lessons learned and best practices. Based on this experiences we also designed two DILIGENT-based tools. EvA is meant for the distributed engineering of ontologies, whereas the Semantic MediaWiki is best suited for the population of ontologies. We describe the design of these tools and some application scenarios.
author: id2097instance
author: id20instance
author: id83instance
author: id720instance
has project: id42instance
has project: id49instance
is about: id100instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id150instance
is about: id29instance
is about: id52instance
is about: id53instance
is about: id68instance
is about: id69instance
is about: id70instance
month: January
series: 7.2.1
title: SEKT Methodology: Initial Lessons Learned and Tool Design
type: SEKT Deliverable
year: 2006

id1117instance
type: Misc
type: Publication
author: id2091instance
author: id721instance
author: id722instance
howpublished: In M. Laub, T. Selle, Technical Report WIOR 615
title: Ein Tabusearch-Verfahren für das Resource Constrained Net Present Value Problem with Minimum and Maximum Time Lags (RCNPVPmax)
year: 2002

id1118instance
type: InProceedings
type: Publication
author: id2041instance
author: id516instance
booktitle: Perspektiven des Mobile Business
is about: id108instance
is about: id59instance
month: August
pages: 81-96
title: Case Study: Wirtschaftlichkeit von mobilen Endgeräten in Krankenhäusern der Maximalversorgung
year: 2005

id1119instance
type: InProceedings
type: Publication
author: id29instance
booktitle: Proceedings Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC 2005), 18-20 May 2005, Seattle, WA, USA
has project: id45instance
month: May
pages: 201--203
title: Organic Computing- A New Vision for Distributed Embedded Systems
year: 2005

id111instance
type: InProceedings
type: Publication
abstract: A format for describing rules for the Semantic Web is discussed
author: id32instance
author: id53instance
booktitle: Special Track on Semantic Web at FLAIRS 2002, The 15th International FLAIRS Conference Crown Plaza Pensacola Grand Hotel, Pensacola, Florida, May 14-16, 2002
is about: id79instance
title: Searching knowledge in the Semantic Web
year: 2002

id1120instance
type: Article
type: Publication
abstract: Organic Computing is becoming the new vision for the design of complex systems, satisfying human needs for trustworthy systems that behave life-like by adapting autonomously to dynamic changes of the environment, and have self-x properties as postulated for Autonomic Computing. Organic Computing is a response to the threatening view of being surrounded by interacting and self-organizing systems which may become unmanageable, showing undesired emergent behavior. Major challenges for organic system design arise from the conflicting requirements to have systems that are at the same time robust and adaptive, having sufficient degrees of freedom for showing self-x properties but being open for human intervention and operating with respect to appropriate rules and constraints to prevent the occurrence of undesired emergent behavior.
author: id29instance
has project: id45instance
is about: id151instance
journal: Künstliche Intelligenz
month: July
number: 3/05
pages: 68--69
title: Organic Computing
year: 2005

id1121instance
type: InProceedings
type: Publication
author: id29instance
author: id723instance
author: id724instance
author: id725instance
author: id726instance
booktitle: DeLFI 2005
is about: id20instance
pages: 117-128
series: LNI
title: Qualitätssicherung für Metadaten
volume: 66
year: 2005

id1123instance
type: InCollection
type: Publication
author: id2044instance
author: id157instance
booktitle: Grid Computing: Software Environments and Tools
is about: id120instance
is about: id20instance
is about: id91instance
is about: id92instance
month: December
title: Towards the Utilization of Grid Computing in Electronic Learning
year: 2005

id1124instance
type: InProceedings
type: Publication
abstract: Recent studies showed how a seamless integration of formal concept analysis (FCA), logic of domains, and answer set programming (ASP) can be achieved. Based on these results for combining hierarchical knowledge with classical rule-based formalisms, we introduce an expressive common-sense query language for formal contexts. Although this approach is conceptually based on order-theoretic paradigms, we show how it can be implemented on top of standard ASP systems. Advanced features, such as default negation and disjunctive rules, thus become practically available for processing contextual data.
author: id2084instance
author: id2107instance
booktitle: Conceptual Structures: Inspiration and Application, Proceedings of the 14th International Conference on Conceptual Structures, ICCS 2006, Aalborg, Denmark, July 2006
has project: id42instance
has project: id50instance
is about: id129instance
is about: id130instance
is about: id132instance
is about: id36instance
is about: id55instance
is about: id58instance
month: July
pages: 413-426
series: Lecture Notes in Artificial Intelligence
title: Querying formal contexts with answer set programs
volume: 4068
year: 2006

id1125instance
type: Publication
type: TechnicalReport
abstract: We take a general perspective on alignment in order to develop common theoretical foundations for the subject. The deliverable comprises a comparative study of different mapping languages by means of distributed first-order logic, and a study on category-theoretical modelling of alignment and merging by means of pushout-combinations.
author: id2084instance
author: id2107instance
author: id386instance
author: id532instance
author: id535instance
author: id727instance
author: id84instance
has project: id43instance
is about: id70instance
is about: id79instance
month: January
note: KnowledgeWeb Deliverable
series: D2.2.5
title: Integrated view and comparison of alignment semantics
year: 2006

id1126instance
type: InProceedings
type: Publication
author: id2instance
author: id43instance
author: id728instance
booktitle: IADIS International Conference e-Commerce 2005
is about: id24instance
is about: id25instance
month: December
pages: 3-10
title: Differences In Bidding Characteristics On eBay.de
year: 2005

id1127instance
type: Publication
type: TechnicalReport
author: id2023instance
has project: id42instance
is about: id80instance
month: December
series: D3.1.2
title: Incremental Ontology Evolution: Evaluation
type: SEKT Formal Deliverable
year: 2005

id1128instance
type: Publication
type: TechnicalReport
abstract: The world is constantly changing, and so does required and available knowledge, e.g. stored in Digital Libraries. Knowledge workers heavily rely on the availability and accessibility of knowledge contained in such libraries. The sheer mass of knowledge available today, however, requires sophisticated support for searching and, often considered as equally important, personalization. In SEKT we address these challenges by using ontologies. Ontologies by nature make implicit knowledge explicit, they describe relevant parts of the world and make them machine understandable and processable. To be effective, ontologies need to change possibly as fast as the parts of the world they describe. Change discovery aims at generating implicit requirements by inducing ontology changes from existing data. We here focus on {em usage-driven} change discovery. Usage data is a very valuable source of contextual information, based on which the ontology can be modified in order to reflect changes in the real world, In a precedent deliverable we have presented a framework for usage-driven ontology evolution along with a set of methods for change discovery. In this deliverable we evaluate this framework by applying it to actual use cases from the BT DL case study. The use cases include (1) usage-based pruning of a generic ontology to obtain a personalized ontology, and (2) extending an existing ontology with personalized extensions obtained via Ontology Learning techniques. The evaluation results show the usefulness of applying usage data for the task of ontology evolution.
author: id2023instance
author: id2079instance
author: id20instance
has project: id42instance
is about: id68instance
month: January
series: 3.2.2
title: D3.2.2 Usage-driven Change Discovery: Evaluation
type: SEKT Deliverable
year: 2006

id1129instance
type: Publication
type: TechnicalReport
abstract: Bottom-up integration aims at exploring the synergies which the SEKT core technologies offer for (semi-)automatic creation and maintenance of ontologies and for the application of ontology technologies in certain settings. After the initial status report in month 18, this deliverable focuses on integration activities between the KDD and OM core technologies, in particular between the TEXTGARDEN and KAON tool suites. It is part of a series of bottom-up deliverables D6.6.x, each reporting on bilateral integration activities for different pairings of the core technologies.
author: id2079instance
author: id20instance
author: id201instance
author: id729instance
has project: id42instance
is about: id134instance
is about: id70instance
is about: id71instance
is about: id93instance
month: January
series: 6.6.3
title: D6.6.3 Integration of TextGarden and KAON
type: SEKT Deliverable
year: 2006

id112instance
type: Misc
type: Publication
abstract: A framework for managing rules on the Semantic Web is discussed
author: id13instance
author: id32instance
author: id53instance
howpublished: The eleventh International World Wide Web Conference WWW2002, poster track, Hawaii, 2002
is about: id79instance
title: A framework for knowledge management on the Semantic Web
year: 2002

id1130instance
type: InProceedings
type: Publication
author: id2instance
author: id43instance
booktitle: Perspektiven des Mobile Business
is about: id24instance
is about: id25instance
month: August
pages: 67-80
title: cInfoXML: Darstellung und automatisierte Auswertung von Informationen über Geschäftspartner
year: 2005

id1131instance
type: Publication
type: TechnicalReport
abstract: The Semantic Web and its technology are increasingly becoming a central element of many activities in computer science. More and more people are interested and would like to enhance their skills thereon. This demand leads to the idea of introducing a joint master’s program on the Semantic Web, the , the “European Academy for Semantic web Education” (EASE). This program shall attract people with a bachelor’s degree from computer science, artificial intelligence, or related areas. It is split among leading European universities, all known for excellence in the field of Semantic Web. They are currently already cooperating in the network of excellence “Knowledge Web” of the European Union. Within the twoyear program prospective students will study up-to-date developments in the Semantic Web area. Courses will cover web infrastructure, Semantic Web technologies, the formal foundations of knowledge representation, information and knowledge systems, and advanced modules. Goal of the program is to build a new generation of Semantic Web experts – and upskill the European workforce with ideas that point to the future. In this deliverable we report on the work towards such a shared master program. We elaborate on the work towards a joint Semantic Web curriculum and show how currently existing courses offered by participating partners from Knowledge Web fit into the curriculum.
author: id20instance
author: id115instance
author: id400instance
author: id532instance
author: id534instance
author: id644instance
author: id730instance
has project: id43instance
has project: id49instance
is about: id79instance
month: January
series: 3.2.4
title: Joint Curriculum for a Shared Masters Program
type: Knowledge Web Deliverable
year: 2006

id1132instance
type: Publication
type: TechnicalReport
abstract: This deliverable presents T-REX, the program in Knowledge Web (KWeb) to support “Topic-oriented Research EXchange”, and gives an overview of the exchanges performed in 2005. The short-term goal of T-REX is to encourage, support and manage the exchange of researchers across KWeb members. The long-term goal of T-REX is to strengthen the European research area by establishing strong and lasting links across research organizations, e.g. visible by shared publications of KWeb members. In this deliverable we report on the exchanges that took place in 2004 – 2005.
author: id20instance
has project: id43instance
has project: id49instance
is about: id79instance
month: January
series: 2.6.5
title: Report on Research Exchange and Collaboration
type: Knowledge Web Deliverable
year: 2006

id1133instance
type: Publication
type: TechnicalReport
abstract: This deliverable is part of the “WP 2.6 Weaving the European Semantic Web Research Network”. This deliverable provides an overview about the workshops and conferences organized in 2005 under the umbrella of Knowledge Web by its partners. Support of events is organized along the well-defined set of criteria which enable different levels of support as introduced earlier in Knowledge Web Deliverable 2.6.3 which also covers an overview of events organized in 2004.
author: id20instance
has project: id43instance
has project: id49instance
is about: id79instance
month: January
series: 2.6.6
title: Report on Workshop and Conference Organization
type: Knowledge Web Deliverable
year: 2006

id1134instance
type: InProceedings
type: Publication
address: Sydney, Australia
author: id2094instance
author: id2096instance
author: id2instance
booktitle: Proceedings of the 4th Australasian Data Mining Conference
month: December
pages: 221-240
title: Predicting foreign exchange rate return directions with Support Vector Machines
year: 2005

id1135instance
type: Article
type: Publication
author: id2096instance
author: id2instance
journal: RISKNEWS
month: April
number: 2
pages: 43-50
title: Das Beste beider Welten - Bewertungsorientiertes versus Erwartungsorientiertes Währungsmanagement: Alternative oder Ergänzungsmöglichkeit?
volume: 2
year: 2005

id1136instance
type: Misc
type: Publication
author: id2105instance
author: id2instance
author: id36instance
author: id697instance
has project: id2instance
howpublished: 10th Annual Workshop on Economic Heterogeneous Interacting Agents (WEHIA 2005)
is about: id3instance
month: June
title: Wealth Dynamics and Price Fluctuations under Taxation
year: 2005

id1137instance
type: Article
type: Publication
author: id32instance
author: id57instance
has project: id42instance
is about: id102instance
journal: Journal of Knowledge Management
month: May
number: 5
title: Context-oriented knowledge management: an outlook
volume: 9
year: 2005

id1138instance
type: InProceedings
type: Publication
address: Luxembourg
author: id2072instance
author: id733instance
author: id734instance
booktitle: CAiSE Forum 2006 Proceedings at the 18th Conference on Advanced Information Systems Engineering (CAiSE)
month: June
pages: 23-26
title: Integration of Heterogeneous BPM Schemas: The Case of XPDL and BPEL
year: 2006

id1139instance
type: InCollection
type: Publication
address: Heidelberg
author: id20instance
author: id83instance
booktitle: Semantic Web - Wege zur vernetzten Wissensgesellschaft
chapter: 3.e.
edition: X.media.press
has project: id42instance
is about: id150instance
is about: id68instance
is about: id69instance
is about: id70instance
title: Wissensvernetzung in Organisationen
year: 2006

id113instance
type: Article
type: Publication
author: id37instance
author: id91instance
journal: Fundamenta Informaticae
number: 1-3
pages: 183-201
title: Formal Language Recognition by Stochastic Cellular Automata
volume: 52
year: 2002

id1140instance
type: InProceedings
type: Publication
abstract: Today, most computer users work with traditional hierarchical file systems for organizing large amounts of personal files. Recently, tagging has grown popular as an alternative means of organizing information resources. We argue that tagging is a powerful paradigm for efficient information access which overcomes many deficiencies of hierarchical file systems, especially in the context of the organization of large quantities of personal files. In this paper we present TagFS, a filesystem with tagging support which aims at a seamless integration of the tagging paradigm with local applications. While retaining the notions of directories and files and providing all standard filesystem operations, the semantics of these primitives are changed to modifications of the tag annotations.
author: id2076instance
author: id2079instance
author: id764instance
author: id765instance
booktitle: Proceedings of the 6th International Conference on Knowledge Management (I-KNOW 06), Graz, Austria, September 6-8, 2006
has project: id42instance
has project: id43instance
has project: id75instance
is about: id104instance
is about: id107instance
is about: id29instance
is about: id36instance
is about: id68instance
month: September
title: TagFS - Tag Semantics for Hierarchical File Systems
year: 2006

id1141instance
type: Publication
type: TechnicalReport
abstract: This document reports on practical applications of approximate reasoning, mainly based on ABox techniques or cooperative query processing. It also shows examples and implementations of distributed reasoning systems for ontologies, as distributed instance retrieval or a mix of ontology querying and information retrieval methods.
author: id2084instance
author: id2097instance
author: id13instance
author: id532instance
author: id535instance
author: id735instance
author: id736instance
author: id737instance
author: id84instance
has project: id43instance
is about: id105instance
is about: id53instance
is about: id55instance
is about: id58instance
is about: id79instance
month: January
note: KnowledgeWeb Deliverable
series: D2.1.2.1v1
title: Report on realizing practical approximate and distributed reasoning for ontologies
year: 2006

id1142instance
type: Misc
type: Publication
author: id2048instance
author: id2instance
author: id33instance
howpublished: 3rd World Conference on Computational Statistics & Data Analysis, Book of Abstracts p. 47
is about: id78instance
month: October
note: Limassol, Zypern
title: A Heuristic Approach towards an Integrated View on Portfolio Return, Market Risk, Credit Risk and Operational Risk
year: 2005

id1143instance
type: InProceedings
type: Publication
abstract: Galois connections between concept lattices can be represented as binary relations on the context level, known as dual bonds. The latter also appear as the elements of the tensor product of concept lattices, but it is known that not all dual bonds between two lattices can be represented in this way. In this work, we define regular Galois connections as those that are represented by a dual bond in a tensor product, and characterize them in terms of lattice theory. Regular Galois connections turn out to be much more common than irregular ones, and we identify many cases in which no irregular ones can be found at all. To this end, we demonstrate that irregularity of Galois connections on sublattices can be lifted to superlattices, and observe close relationships to various notions of distributivity. This is achieved by combining methods from algebraic order theory and FCA with recent results on dual bonds. Disjunctions in formal contexts play a prominent role in the proofs and add a logical flavor to our considerations. Hence it is not surprising that our studies allow us to derive corollaries on the contextual representation of deductive systems.
address: Berlin
author: id2107instance
author: id739instance
booktitle: Proceedings of the 4th International Conference on Formal Concept Analysis (ICFCA2006), Dresden, Germany
is about: id36instance
month: February
series: Lecture Notes in Computer Science
title: The Tensor Product as a Lattice of Regular Galois Connections
volume: 3874
year: 2006

id1147instance
type: Article
type: Publication
author: id13instance
author: id98instance
author: id31instance
author: id554instance
author: id558instance
author: id620instance
author: id740instance
has project: id35instance
has project: id50instance
is about: id102instance
is about: id137instance
journal: Journal of Web Semantics: Science, Services and Agents on the World Wide Web
number: 4
pages: 14-28
title: Semantic Annotation for Knowledge Management: Requirements and a Survey of the State of the Art
year: 2006

id1148instance
type: Publication
type: TechnicalReport
abstract: Artificial neural networks can be trained to perform excellently in many application areas. Whilst they can learn from raw data to solve sophisticated recognition and analysis problems, the acquired knowledge remains hidden within the network architecture and is not readily accessible for analysis or further use: Trained networks are black boxes. Recent research efforts therefore investigate the possibility to extract symbolic knowledge from trained networks, in order to analyze, validate, and reuse the structural insights gained implicitly during the training process. In this paper, we will study how knowledge in form of propositional logic programs can be obtained in such a way that the programs are as simple as possible—where simple is being understood in some clearly defined and meaningful way.
author: id2084instance
author: id448instance
author: id589instance
has project: id50instance
is about: id129instance
is about: id131instance
is about: id55instance
month: February
title: Extracting Reduced Logic Programs from Artificial Neural Networks
year: 2006

id114instance
type: InProceedings
type: Publication
author: id29instance
author: id37instance
author: id48instance
author: id92instance
booktitle: Proceedings of the Second International Conference on Engineering of Reconfigurable Systems and Algorithms (ERSA'02), Las Vegas
is about: id5instance
is about: id77instance
pages: 3-9
title: On Enforced Convergence of ACO and its Implementation on the Reconfigurable Mesh Architecture Using Size Reduction Tasks
year: 2002

id1150instance
type: Publication
type: TechnicalReport
author: id2053instance
author: id2097instance
author: id20instance
has project: id42instance
has project: id49instance
is about: id71instance
is about: id79instance
month: January
note: SEKT Deliverable 3.3.2
title: Data-driven Change Discovery -- Evaluation
year: 2006

id1151instance
type: Publication
type: TechnicalReport
author: id2053instance
author: id20instance
has project: id42instance
has project: id49instance
is about: id71instance
is about: id79instance
month: July
note: SEKT Deliverable 3.3.1
title: Data-driven Change Discovery
year: 2005

id1152instance
type: InProceedings
type: Publication
abstract: Kennzahlen und Kennzahlensysteme haben in der Wirtschaft eine lange Tradition. Als Instrumente eines dedizierten Controlling-Kreislaufs werden Kennzahlensysteme meist für einen bestimmten Zweck gebildet; Daten und Kennzahlen werden so u.U. innerhalb eines Unternehmens mehrfach und überschneidend erhoben. Hilfe kann in diesem Zusammenhang die Einrichtung einer Kennzahlen- und Datenmaklerfunktion bieten. In vorliegendem Artikel soll anhand eines Beispiels aus der Unternehmenspraxis eine mögliche Vorgehensweise zur Schaffung einer solchen Instanz skizziert und die Möglichkeiten einer systematischen Nutzung der Ergebnisdaten in unterschiedlichen Analyse- und Steuerungskontexten aufgezeigt werden.
author: id29instance
author: id96instance
author: id741instance
booktitle: Multikonferenz Wirtschaftsinformatik 2006
has project: id48instance
month: February
pages: 47-65
title: Realisierung einer transdisziplinären Erhebung von Daten und Kennzahlen zur Analyse und Steuerung eines Banken-IT-Dienstleisters
volume: Band 1
year: 2006

id1153instance
type: Misc
type: Publication
author: id2053instance
author: id404instance
author: id617instance
author: id742instance
author: id82instance
has project: id42instance
has project: id49instance
howpublished: Tutorial at ESWC2005
is about: id110instance
is about: id71instance
is about: id79instance
month: May
title: Human Language Technology and Knowledge Acquisition for the Semantic Web
year: 2005

id1154instance
type: InProceedings
type: Publication
abstract: We propose a new technique for approximate ABox reasoning with OWL DL ontologies. Essentially, we obtain substantially improved reasoning performance by disregarding non-Horn features of OWL DL. Our approach comes as a side-product of recent research results concerning a new transformation of OWL DL ontologies into negation-free disjunctive datalog, and rests on the idea of performing standard resolution over disjunctive rules by treating them as if they were non-disjunctive ones. We analyse our reasoning approach by means of non-monotonic reasoning techniques, and present an implementation, called Screech.
address: Dagstuhl, Germany
author: id2084instance
author: id2097instance
booktitle: Principles and Practices of Semantic Web Reasoning
has project: id42instance
has project: id43instance
has project: id49instance
has project: id50instance
is about: id129instance
is about: id17instance
is about: id80instance
month: September
note: see also ARW2005 publication
number: 05371
series: Dagstuhl Seminar Proceedings
title: Faster OWL Using Split Programs
year: 2005

id1155instance
type: InCollection
type: Publication
author: id15instance
author: id29instance
author: id4instance
booktitle: Solutions to Parallel and Distributed Computing Problems
is about: id30instance
is about: id73instance
pages: 47-68
title: Parallel implementations of evolutionary algorithms
year: 2001

id1156instance
type: InCollection
type: Publication
author: id15instance
booktitle: Ausgezeichnete Informatikdissertationen
is about: id31instance
pages: 31-42
title: Evolutionäre Optimierung dynamischer Probleme
year: 2001

id1157instance
type: InCollection
type: Publication
author: id15instance
booktitle: Graph Drawing - Models and Algorithms
is about: id155instance
pages: 228-246
title: Dynamic graph drawing
year: 2001

id1158instance
type: InCollection
type: Publication
author: id15instance
author: id29instance
author: id744instance
author: id78instance
booktitle: etriebswirtschaftliche Anwendungen des Softcomputing
is about: id39instance
pages: 267-281
title: Strategische Standortplanung mit einem interaktiven Genetischen Algorithmus
year: 1998

id1159instance
type: Article
type: Publication
author: id15instance
author: id29instance
author: id148instance
is about: id63instance
journal: Advances in Engineering Software
pages: 499-507
title: Guidance in evolutionary multi-objective optimization
volume: 32
year: 2001

id115instance
type: InProceedings
type: Publication
author: id37instance
author: id33instance
booktitle: Proceedings of the Genetic and Evolutionary Computation Conference (GECCO-2002), New York
has project: id9instance
is about: id5instance
pages: 105-112
title: Studies on the Dynamics of Ant Colony Optimization Algorithms
year: 2002

id1160instance
type: Misc
type: Publication
author: id2091instance
howpublished: Diploma (master) thesis , Institute AIFB, University of Karlsruhe
is about: id30instance
is about: id31instance
is about: id63instance
month: May
title: Efficient Search for Robust Solutions by Means of Evolutionary Algorithms and Fitness Approximation
year: 2004

id1161instance
type: Article
type: Publication
author: id2091instance
author: id711instance
author: id712instance
journal: American Naturalist
note: (in revision)
title: The Influence of Learning on Rate of Evolution
year: 2006

id1162instance
type: Publication
type: TechnicalReport
author: id98instance
has project: id50instance
is about: id110instance
month: March
title: A first-order account of the relation between bridges, discourse relations and world knowledge
year: 2006

id1163instance
type: Publication
type: TechnicalReport
abstract: SemVersion is a generic, extendable multi-language ontology versioning system, that can help research and industry to employ ontology based technologies in dynamic settings. This deliverable describes the requirements for and design of SemVersion.
author: id2076instance
author: id534instance
author: id637instance
author: id638instance
author: id677instance
author: id745instance
author: id746instance
has project: id43instance
is about: id70instance
is about: id80instance
month: January
series: 2.3.3.v2
title: SemVersion - Versioning RDF and Ontologies
type: Knowledge Web Deliverable
year: 2006

id1164instance
type: InProceedings
type: Publication
address: Budva, Montenegro
author: id2055instance
author: id6instance
author: id83instance
booktitle: The Semantic Web: Research and Applications: 3rd European Semantic Web Conference, ESWC 2006, June 11-14, 2006 Proceedings
has project: id30instance
has project: id42instance
is about: id123instance
is about: id150instance
is about: id69instance
is about: id70instance
month: June
pages: 110--124
series: LNCS
title: Ontology Engineering Revisited: an Iterative Case Study with DILIGENT
volume: 4011
year: 2006

id1165instance
type: InCollection
type: Publication
author: id2023instance
author: id279instance
author: id83instance
booktitle: Semantic Web and Peer-to-Peer
pages: 123--140
title: Expertise-Based Peer Selection
year: 2005

id1166instance
type: InCollection
type: Publication
author: id14instance
author: id2023instance
author: id2067instance
author: id80instance
booktitle: Semantic Web and Peer-to-Peer
pages: 141--156
title: Personalized Information Access in a Bibliographic Peer-to-Peer System
year: 2005

id1167instance
type: InCollection
type: Publication
author: id2023instance
author: id2067instance
author: id6instance
author: id80instance
author: id83instance
author: id125instance
author: id279instance
author: id280instance
author: id393instance
author: id487instance
author: id749instance
author: id81instance
booktitle: Semantic Web and Peer-to-Peer
pages: 347--362
title: Bibster -- A Semantics-Based Bibliographic Peer-to-Peer System
year: 2005

id1168instance
type: InProceedings
type: Publication
author: id2077instance
author: id2084instance
author: id57instance
author: id715instance
booktitle: IME Proceedings 2006
month: August
title: Visual Ontology Modeling for Electronic Markets
year: 2006

id1169instance
type: InProceedings
type: Publication
abstract: Die besonderen Vorzüge von mobilen Endgeräten wie Mobiltelefonen und PDAs als Medium für Werbung werden in zahlreichen Publikationen erörtert, wobei meist ausgehend von den hohen Penetrationsraten dieser Geräte, der Möglichkeit der direkten Ansprache und ihrem Charakter als ubiquitäre Begleiter argumentiert wird. In der Praxis kommen bisher nur einfache Formen von Werbung mit mobilen Endgeräten zum Einsatz, z.B. die Übermittlung von Werbebotschaften per SMS; zudem spielt das Marktvolumen von m-Advertising im Vergleich zu herkömmlichen Werbeformen derzeit noch eine untergeordnete Rolle. Der vorliegende Beitrag gibt aufbauend auf einer Einordnung von m-Advertising und seinen spezifischen Merkmalen einen Überblick über verschiedene Ansätze zur Realisierung von Werbung mit mobilen Endgeräten.
address: Passau
author: id12instance
author: id2039instance
author: id2041instance
author: id2042instance
booktitle: Mobile Informationssysteme - Potentiale, Hindernisse, Einsatz. Proceedings der 1. Fachtagung Mobilität und Mobile Informationssysteme (MMS)
is about: id59instance
month: January
pages: 103-114
series: Lecture Notes in Informatics (LNI)
title: m-Advertising: Werbung mit mobilen Endgeräten - ein Überblick
volume: P-76
year: 2006

id116instance
type: InProceedings
type: Publication
author: id37instance
author: id33instance
booktitle: 3rd European Workshop on Scheduling and Timetabling and 3rd European Workshop on Evolutionary Methods for AI Planning (EvoSTIM/EvoPLAN-2002), Kinsale, Ireland
has project: id9instance
is about: id5instance
pages: 325-333
series: LNCS
title: Ant Colony Optimization with the Relative Pheromone Evaluation Method
volume: 2279
year: 2002

id1170instance
type: Misc
type: Publication
author: id2041instance
howpublished: Kurzbeitrag auf der MKWI 2006
is about: id108instance
month: February
title: Framework für eine holistische Wirtschaftlichkeitsanalyse mobiler Systeme
year: 2006

id1171instance
type: InProceedings
type: Publication
author: id51instance
booktitle: Formal Concept Analysis, Third International Conf., ICFCA 2005-Supplementary Volume
has project: id74instance
is about: id36instance
month: February
pages: 62--78
title: Using a Query-Based Multicontext For Knowledge Base Browsing
year: 2006

id1172instance
type: InProceedings
type: Publication
abstract: We have now reached a stage in the lifecycle of semantic technologies, where a major integrative effort is needed, so as to produce the infrastructure that the community requires. A large-scale effort is needed to tackle the 'holistic' problem of an effective integration of technologies and methods. This effort would make the acquisition, design, development and maintenance of large, heterogeneous semantic applications, which are now, in principle, feasible, more cost-effective.
address: London, UK
author: id2023instance
author: id20instance
author: id57instance
author: id174instance
author: id566instance
author: id621instance
author: id750instance
author: id751instance
booktitle: Proceedings of 2nd European Workshop on the Integration of Knowledge, Semantic and Digital Media Technologies (EWIMT-2005)
has project: id71instance
is about: id69instance
is about: id70instance
is about: id80instance
month: November
pages: 451-452
title: NeOn - Lifecycle Support for Networked Ontologies
year: 2005

id1173instance
type: InProceedings
type: Publication
abstract: In der Informatik sind Ontologien formale Modelle eines Anwendungsbereiches, die die Kommunikation zwischen menschlichen und/oder maschinellen Akteuren unterstützen und damit den Austausch und das Teilen von Wissen in Unternehmen erleichtern. Ontologien zur strukturierten Darstellung von Wissen zu nutzen hat deshalb in den letzten Jahren zunehmende Verbreitung gefunden. Schon heute existieren weltweit tausende Ontologien. Um Interoperabilität zwischen darauf aufbauenden Softwareagenten oder Webservices zu ermöglichen, ist die semantische Integration der Ontologien eine zwingendnotwendige Vorraussetzung. Wie man sich leicht verdeutlichen kann, ist die rein manuelle Erstellung der Abbildungen ab einer bestimmten Größe, Komplexität und Veränderungsrate der Ontologien nicht mehr ohne weiteres möglich. Automatische oder semiautomatische Technologien müssen den Nutzer darin unterstützen. Das Integrationsproblem beschäftigt Forschung und Industrie schon seit vielen Jahren z.B. im Bereich der Datenbankintegration. Neu ist jedoch die Möglichkeit komplexe semantische Informationen, wie sie in Ontologien vorhanden sind, einzubeziehen. Zur Ontologieintegration wird in diesem Kapitel ein sechsstufiger genereller Prozess basierend auf den semantischen Strukturen eingeführt. Erweiterungen beschäftigen sich mit der Effizienz oder der optimalen Nutzereinbindung in diesen Prozess. Außerdem werden zwei Anwendungen vorgestellt, in denen dieser Prozess erfolgreich umgesetzt wurde. In einem abschließenden Fazit werden neue aktuelle Trends angesprochen. Da die Ansätze prinzipiell auf jedes Schema übertragbar sind, das eine semantische Basis enthält, geht der Einsatzbereich dieser Forschung weit über reine Ontologieanwendungen hinaus.
address: Innsbruck, AT
author: id20instance
author: id57instance
author: id80instance
booktitle: Workshop Modellierung fuer Wissensmanagement auf der Modellierung 2006
has project: id42instance
has project: id43instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
month: March
title: Automatische Wissensintegration mit Ontologien
year: 2006

id1174instance
type: Publication
type: TechnicalReport
author: id2072instance
author: id733instance
author: id734instance
series: JM-2005-03
title: Integration of Heterogeneous BPM Schemas: The Case of XPDL and BPEL
year: 2006

id1175instance
type: Proceedings
type: Publication
editor: id38instance
editor: id157instance
editor: id716instance
editor: id752instance
is about: id16instance
month: March
series: GI-Edition - Lecture Notes in Informatics (LNI)
title: Datenbanksysteme in Business, Technologie und Web (BTW 2005), 11. Fachtagung des GI-Fachbereichs "Datenbanken und Informationssysteme" (DBIS), Karlsruhe, 2.-4. März 2005
volume: P-65
year: 2005

id1176instance
type: InCollection
type: Publication
abstract: Der Einsatz mobiler Technologien im Customer Relationship Management bietet Unternehmen entscheidende Wettbewerbsvorteile. Der vorliegende Beitrag erläutert, worin diese Vorteile für kleine und mittelständische Unternehmen bestehen, welche Prozesse sich mobil unterstützen lassen und wie die Umsetzung von mobilem CRM erfolgen kann.
address: Freiburg et al.
author: id2042instance
booktitle: CRM-Erfolgsfaktor Kundenorientierung
is about: id109instance
month: January
pages: 125-130
title: Kundenbindung vor Ort stärken: Mobiles Customer Relationship Management
year: 2006

id1177instance
type: InProceedings
type: Publication
address: Whistler, Canada
author: id2111instance
author: id484instance
author: id753instance
booktitle: Proc. of the 9th Int. Conf. on Knowledge Representation and Reasoning (KR2004)
month: June
pages: 152-162
title: Reducing SHIQ Descrption Logic to Disjunctive Datalog Programs
year: 2004

id1178instance
type: InProceedings
type: Publication
address: Edinburgh, Scotland
author: id2123instance
author: id91instance
booktitle: Proceedings of The 15th International World Wide Web Conference
has project: id38instance
has project: id62instance
is about: id119instance
is about: id136instance
is about: id19instance
is about: id24instance
is about: id40instance
is about: id41instance
is about: id58instance
is about: id82instance
month: May
title: Automatic Matchmaking of Web Services (Poster)
year: 2006

id1179instance
type: InProceedings
type: Publication
author: id98instance
author: id73instance
author: id754instance
booktitle: Proceedings of the International Conference on Language Resources and Evaluation (LREC)
has project: id50instance
has project: id74instance
is about: id110instance
is about: id71instance
month: May
pages: 161-169
title: Finding the Appropriate Generalization Level for Binary Relations Extracted from the Genia Corpus
year: 2006

id117instance
type: InProceedings
type: Publication
author: id37instance
author: id33instance
booktitle: Ant Algorithms, Proceedings of Third International Workshop ANTS 2002, Brussels, Belgium
has project: id9instance
is about: id5instance
pages: 149-162
series: LNCS
title: Modelling ACO: Composed Permutation Problems
volume: 2463
year: 2002

id1180instance
type: InProceedings
type: Publication
author: id98instance
author: id613instance
author: id755instance
author: id756instance
booktitle: Proceedings of the International Conference on Language Resources and Evaluation (LREC)
has project: id50instance
is about: id110instance
is about: id49instance
month: May
pages: 2321-2324
title: Ontology-based Information Extraction with SOBA
year: 2006

id1181instance
type: Article
type: Publication
abstract: Knowledge representation and semantic annotation of multimedia documents typically have been pursued in two different directions. Previous approaches have focused either on low-level descriptors, such as dominant colour, or on the semantic content dimension and corresponding manual annotations, such as person or vehicle. Here, a knowledge infrastructure and an experimentation platform for semantic annotation to bridge the two directions are presented. Ontologies are being extended and enriched to include low-level audiovisual features and descriptors. Additionally, a tool that allows for linking low-level MPEG-7 visual descriptions to ontologies and annotations is presented. Thus, ontologies that include prototypical instances of high-level domain concepts together with a formal specification of the corresponding visual descriptors are constructed. This infrastructure is exploited by a knowledge-assisted analysis framework that may handle problems such as segmentation, tracking, feature extraction and matching in order to classify scenes, identify and label objects and thus automatically create the associated semantic metadata.
author: id13instance
author: id2079instance
author: id6instance
author: id462instance
author: id464instance
author: id465instance
author: id466instance
author: id473instance
author: id496instance
author: id585instance
has project: id44instance
is about: id137instance
is about: id153instance
is about: id79instance
is about: id80instance
journal: IEE Proceedings on Vision, Image and Signal Processing - Special issue on the Integration of Knowledge, Semantics and Digital Media Technology
month: June
number: 3
pages: 255-262
title: Knowledge Representation and Semantic Annotation of Multimedia Content
volume: 153
year: 2006

id1182instance
type: InProceedings
type: Publication
address: New York, NY, USA
author: id2048instance
author: id2instance
author: id33instance
author: id758instance
booktitle: GECCO '06: Proceedings of the 8th annual conference on Genetic and evolutionary computation
is about: id13instance
is about: id30instance
is about: id39instance
is about: id63instance
is about: id78instance
month: June
pages: 747-748
title: Comparison of Multi-Objective Evolutionary Algorithms in Optimizing Combinations of Reinsurance Contracts
volume: 1
year: 2006

id1183instance
type: InCollection
type: Publication
address: Wiesbaden
author: id12instance
author: id501instance
author: id759instance
author: id760instance
booktitle: Perspektiven des Mobile Business - Wissenschaft und Praxis im Dialog
has project: id34instance
is about: id59instance
month: August
pages: 115-126
title: Kontextsensitive mobile Dienste am Beispiel des Mobilmedia-Leitprojektes MoMa: Mobiles Marketing
year: 2005

id1184instance
type: InProceedings
type: Publication
abstract: Ontologies are defined as the formal specification of a shared conceptualisation of a domain of interest. Unlike most other ontology engineering methodologies, the DILIGENT methodology aims specifically at the collaborative and distributed building of ontologies, providing a rich argumentation framework in order to quickly proceed with building the ontology and track all relevant discussions about the conceptualisation. Based upon first experience with the DILIGENT methodology, we designed a tool to support engineers and domain experts to follow the DILIGENT processes. In this paper we present the requirements, personas and scenarios our work is based upon, derived from our experience with ontology building, and the resulting design and state of the ongoing implementation, in order to get timely feedback for the further development of an DILIGENT based collaborative ontology engineering environment.
address: Manchester, UK
author: id2097instance
author: id20instance
author: id720instance
booktitle: 1st International Workshop on Semantic Technologies in Collaborative Applications STICA 06
has project: id42instance
has project: id49instance
is about: id150instance
is about: id29instance
is about: id69instance
is about: id70instance
month: June
title: A Tool for DILIGENT Argumentation: Experiences, Requirements and Design
year: 2006

id1185instance
type: InProceedings
type: Publication
abstract: In an attempt to create a lean vocabulary for incremental recording and step-wise formalisation of personal knowledge, we identified a set of common knowledge structures. These Conceptual Data Structures (CDS) were found to be inherent to a variety of different knowledge artefacts ranging from vague paper notes to highly structured documents. CDS is suitable for representing knowledge in various degrees of formalisation a uniform fashion, allowing gradual migration. CDS serves two purposes: First, as a guideline for future Personal Knowledge Management (PKM) tools, providing a set of crucial structural primitives. Second, the RDF-based representation of CDS can serve as a knowledge exchange format. It is capable of representing also vague or even inconsistent knowledge structures between people and PKM tools without unnecessary loss of information.
address: Aalborg University - Denmark
author: id2076instance
author: id2115instance
booktitle: Proc. of the 14th International Conference on Conceptual Structures 2006
has project: id42instance
has project: id43instance
has project: id75instance
is about: id102instance
is about: id104instance
is about: id105instance
is about: id29instance
is about: id53instance
is about: id60instance
is about: id68instance
is about: id79instance
month: July
title: Conceptual Data Structures (CDS) -- Towards an Ontology for Semi-Formal Articulation of Personal Knowledge
year: 2006

id1186instance
type: InProceedings
type: Publication
address: Göteborg, Sweden
author: id2078instance
author: id281instance
author: id761instance
booktitle: Proceedings of the European Conference on Information Systems (ECIS'06)
has project: id39instance
has project: id51instance
is about: id114instance
is about: id119instance
is about: id120instance
is about: id127instance
is about: id24instance
is about: id25instance
month: June
title: Automated Bidding for Trading Grid Services
year: 2006

id1188instance
type: Misc
type: Publication
author: id38instance
author: id99instance
howpublished: ISB aktuell (1/2006): S. 09-12
is about: id20instance
is about: id9instance
month: April
title: MODELL LOB-MUT: BASIS EINER LERNENDEN ORGANISATION
year: 2006

id1189instance
type: InProceedings
type: Publication
abstract: The entity relationship approach is a widely accepted method for conceptual database design. However, some problems arise if ER modelling is applied to the design of really large databases concerning whole enterprises. There is, e.g., no way to obtain a general view nor to perceive the global context of a detailed enterprise scheme with hundreds of entities and relationships. Different approaches use ER model clustering to overcome these problems. All approaches are based on an already existing detailed ER diagram. Based on this, the abstraction layers are built bottom-up. The approach proposed in this paper refines and extends the approaches mentioned above. It also takes into account the Nested Entity Relationship Model in order to refine relationship types. It can be used in a top-down database design process as well as in a bottom-up approach.
address: Berlin, Heidelberg
author: id1876instance
author: id1915instance
author: id38instance
booktitle: Entity-Relationship Approach - ER'93: 12th Int. Conference on the Entity-Relationship Approach
is about: id61instance
pages: 451-462
series: LNCS
title: Extending ER model clustering by relationship clustering
volume: 823
year: 1994

id118instance
type: InProceedings
type: Publication
abstract: This paper describes our ongoing work on developing a holistic approach for the introduction and improvement of KM in an organization. The described methodology does not focus on a specific area but considers all layers of an organization, the organizational, the process and the technology layer. The overall approach will consist of two main components: a KM Measures Repository and a KM Maturity Model. The KM Measures Repository contains best practice measures for each layer. The KM Maturity Model allows an organization to describe itself. Both components will be made “machine executableâ€ and included in a self assessment tool which uses different KM technologies.
author: id93instance
booktitle: Proc. of the 4th International Conference on Practical Aspects of Knowledge Management (PAKM 2002), December 2-3 2002, Vienna, Austria
is about: id103instance
pages: 565-570
series: LNAI
title: A Methodological Basis for Bringing Knowledge Management to Real-World Environments
volume: 2569
year: 2002

id1190instance
type: InProceedings
type: Publication
abstract: In [Tane 2005], we introduced the query-based multicontext theory, which allows to define a virtual space of views on ontological data. Each view is then materialised as a formal context. While this formal context can be visualised in a usual formal concept analysis framework such as Conexp or ToscanaJ, [Tane 2005] also briefly described how the approach allowed the creation of a novel navigation framework for knowledge bases. The principle of this navigation is based on supporting the user in defining pertinent views. The purpose of this article is to discuss the benefits of the browsing interface. This discussion is performed, on the one hand, by comparing the approach to other Formal Concept Analysis based frameworks. On the other hand, it exposes the preliminary evaluation of the visualisation of formal contexts by comparing the display of a lattice to two other approaches based on trees and graphs.
address: Heidelberg
author: id2084instance
author: id51instance
author: id98instance
booktitle: Proceedings of the 14th International Conference on Conceptual Structures, ICCS2006
has project: id50instance
is about: id36instance
is about: id79instance
month: July
series: Lecture Notes in Computer Science
title: Query-Based Multicontexts for Knowledge Base Browsing: an Evaluation
volume: 4068
year: 2006

id1191instance
type: InProceedings
type: Publication
abstract: In this paper, we outline an approach for constructing clusters of related terms that may be used for deriving formal conceptual structures like taxonomies. In contrast to previous approaches in this direction, we take into account the fact that words can have several meanings and consider two alternative soft clustering techniques, namely Overlapping Pole-Based Clustering (PoBOC) and Clustering by Comittees (CBC) for this purpose. These soft clustering algorithms try to detect different contexts of the clustered words, resulting in possibly more than one cluster membership. We report on initial experiments conducted on textual data from the tourist domain.
author: id2079instance
author: id98instance
author: id762instance
booktitle: Advances in Data Analysis: Proceedings of the 30th Annual Conference of the German Classification Society (GfKl), Berlin, Germany, March 8-10, 2006
has project: id42instance
has project: id50instance
is about: id71instance
note: TO APPEAR
title: Clustering of Polysemic Words
year: 2006

id1192instance
type: InProceedings
type: Publication
abstract: We present the SmartWeb Demonstrator for multimodal and mobile querying of semantic resources and the open WWW. The end-user interface consists of a Pocket Data Assistant which accepts written or spoken questions as input and delivers answers based on a multitude of resources including a semantic knowledge base, semantically annotated online web services, and semiautomatically created knowledge from text-based web pages. If answers cannot be found using these structured resources, then the system returns answers based on linguistic query-answering techniques on the open WWW.
author: id2084instance
author: id2107instance
author: id2123instance
author: id2133instance
author: id57instance
author: id79instance
author: id98instance
author: id586instance
author: id611instance
author: id763instance
booktitle: Proceedings of the ESWC2006 poster and demo session
has project: id50instance
is about: id136instance
is about: id79instance
month: June
note: To appear
title: SmartWeb: Mobile Access to the Semantic Web
year: 2006

id1194instance
type: InProceedings
type: Publication
abstract: The main purpose of business process modeling is the representation and analysis of alternative process designs by formal or semiformal process models. Manual modeling of business processes is a timeconsuming task. Typos and structural modeling errors make it particularly error prone to model business processes manually. Users can be assisted in modeling business processes by providing an autocompletion mechanism during the modeling process. In this paper we will describe on-going work for autocompletion of business process models. This approach is based upon an OWL DL description of Petri nets. Our autocompletion mechanism requires validation methods to check process properties of the automatically completed business process, which we will introduce as well. Consequently, we aim to improve manual process modeling by automating process modeling to a significant extent.
address: Budva, Montenegro
author: id1876instance
author: id2072instance
author: id2126instance
author: id2137instance
booktitle: Proceeding of the Workshop on Semantics for Business Process Management at the 3rd European Semantic Web Conference 2006
month: June
pages: 1-12
title: Automatic User Support for Business Process Modeling
year: 2006

id1195instance
type: Article
type: Publication
author: id2085instance
journal: Theoretical Computer Science 351
pages: 372-393
title: Trees, grids, and MSO decidability: From graphs to matroids
year: 2006

id1196instance
type: Article
type: Publication
author: id2instance
author: id543instance
journal: Theoretical Computer Science
number: 3
pages: 372-393
title: Trees, grids, and MSO decidability: From graphs to matroids
volume: 351
year: 2006

id1199instance
type: Misc
type: Publication
abstract: In this work, we will report on the use of selforganizing maps (SOMs) in a clustering and relation extraction task. Specifically, we use the approach of self-organizing maps for structured data (SOMSDs) (i) for clustering music related articles from the free online encyclopedia Wikipedia and (ii) for extracting relations between the created clusters. We hereby rely on the bag-of-words similarity between individual articles on the one hand but additionally exploit the link structure between the articles on the other.
author: id2079instance
author: id2131instance
has project: id42instance
has project: id74instance
howpublished: International Workshop on Intelligent Information Access (IIIA-2006), Helsinki, Finland, July 6-8, 2006
is about: id134instance
is about: id49instance
month: July
note: ABSTRACT
title: A Self Organizing Map for Relation Extraction from Wikipedia using Structured Data Representations
year: 2006

id119instance
type: InProceedings
type: Publication
abstract: In recent years ontologies -- shared conceptualizations of some domain -- are increasingly seen as the key to further automation of information processing. Although many approaches for representing and applying ontologies have already been devised, they haven't found their way into enterprise applications. In this paper we argue that ontology-based systems lack critical technical features, such as scalability, reliability, concurrency and integration with existing data sources, as well as the support for modularization and meta-concept modeling from the conceptual modeling perspective. We present a conceptual modeling approach that balances some of the trade-offs to more easily integrate into existing enterprise information infrastructure. Our approach is implemented within KAON, the Karlsruhe Ontology and Semantic Web tool suite.
author: id40instance
author: id50instance
author: id5instance
booktitle: Proceedings of the First International Conference on Ontologies, Databases and Application of Semantics (ODBASE-2002)
is about: id107instance
is about: id61instance
is about: id69instance
is about: id80instance
title: A Conceptual Modeling Approach for building semantics-driven enterprise applications
year: 2002

id11instance
type: Proceedings
type: Publication
editor: id6instance
editor: id8instance
editor: id9instance
has project: id28instance
has project: id30instance
is about: id100instance
is about: id102instance
is about: id107instance
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is about: id61instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
is about: id80instance
is about: id81instance
title: Proceedings of the WWW2002 International Workshop on the Semantic Web. Honululu, Hawaii, May 7, 2002
volume: 55
year: 2002

id1200instance
type: InProceedings
type: Publication
abstract: Ontologies are a pillar of the emerging Semantic Web. They capture background knowledge by providing relevant concepts and relations. Their role is to provide intensional knowledge in a machine processable way, and thus enable automatic aggregation and the proactive use of distributed data sources. Ontologies on the Semantic Web will come from a vast variety of different sources, spanning institutions and persons aiming for different quality criteria. Ontology evaluation is the task of assessing the quality of an ontology. It answers the question: How to measure the quality of an ontology for the web?
address: Budva, Montenegro
author: id2097instance
booktitle: Proceedings of the KnowledgeWeb PhD Symposium KWEPSY 2006
has project: id42instance
has project: id49instance
is about: id69instance
is about: id70instance
is about: id79instance
month: June
title: Ontology Evaluation for the Web - PhD proposal
year: 2006

id1201instance
type: InProceedings
type: Publication
abstract: Personalization mechanisms on the web today are clumsy and obtrusive, because users need to log in to multiple websites and enter their personal information and preferences separately for each. In addition, the user profile is different for each website and cannot be combined with other information on the web. Using Semantic Web technologies, in particular FOAF, we can identify the person browsing to the website. In this paper, we propose an extension of the HTTP GET method to include a new parameter that points to the URL of the user&#8217;s FOAF file. This simple, but powerful extension enables the web server to use information contained in the person's FOAF file to personalize the web pages returned. We also present a proof-of-concept implementation by customizing our institute welcome page using a visitor's FOAF file.
address: Budva, Montenegro
author: id2097instance
author: id2123instance
booktitle: Proceedings of the Semantic Web Personalization Workshop
has project: id42instance
has project: id49instance
has project: id50instance
is about: id100instance
is about: id60instance
is about: id79instance
month: June
title: Personalizing web surfing with semantically enriched peronal profiles
year: 2006

id1202instance
type: Misc
type: Publication
abstract: We provide an extension to be integrated in Wikipedia, that allows the typing of links between articles and the specification of typed data inside the articles in an easy-to-use manner. Enabling even casual users to participate in the creation of an open semantic knowledge base, Wikipedia has the chance to become a resource of semantic statements, hitherto unknown regarding size, scope, openness, and internationalisation. These semantic enhancements bring to Wikipedia benefits of today&#8217;s semantic technologies: more specific ways of searching and browsing. Also, the RDF export, that gives direct access to the formalised knowledge, opens Wikipedia up to a wide range of external applications, that will be able to use it as a background knowledge base.
author: id2076instance
author: id2097instance
author: id2107instance
author: id2115instance
author: id57instance
has project: id42instance
has project: id49instance
has project: id50instance
has project: id67instance
howpublished: Poster and Demo at the ESWC2006
is about: id79instance
is about: id80instance
month: June
title: Semantic Wikipedia (ESWC2006 demo)
year: 2006

id1207instance
type: Book
type: Publication
address: München
author: id28instance
author: id2instance
author: id108instance
author: id109instance
edition: 3., neu bearbeitete Auflage
is about: id67instance
isbn: 3-446-40493-7
title: Grundkurs Programmieren in Java - Band 1: Der Einstieg in Programmierung und Objektorientierung
year: 2006

id1208instance
type: Book
type: Publication
address: München
author: id28instance
author: id2instance
author: id108instance
author: id109instance
edition: 2., neu bearbeitete Auflage
is about: id67instance
title: Grundkurs Programmieren in Java - Band 2: Einführung in die Programmierung kommerzieller Systeme
year: 2006

id1209instance
type: InProceedings
type: Publication
abstract: We present our work in integrating Semantic Web services for access via mobile devices. We have developed a system, theWebServiceAccessComponent, that transforms a user request for a service on a mobile device, to a Web service request and then selects a matching service from the existing Web services of the Deutsche Telekom, which provide navigational and weather information. In this poster, we present the requirements and design of the WebServiceAccessComponent.
author: id2084instance
author: id2123instance
author: id2133instance
author: id57instance
author: id79instance
booktitle: Proceedings of the ESWC2006 poster and demo session
has project: id50instance
is about: id119instance
is about: id79instance
month: May
note: To appear
title: Integrating Semantic Web Services for Mobile Access
year: 2006

id120instance
type: InProceedings
type: Publication
abstract: Ontologies as means for conceptualizing and structuring domain knowledge within a community of interest are seen as a key to realize the Semantic Web vision. However, the decentralized nature of the Web makes achieving this consensus across communities difficult, thus, hampering efficient knowledge sharing between them. In order to balance the autonomy of each community with the need for interoperability, mapping mechanisms between distributed ontologies in the Semantic Web are required. In this paper we present MAFRA, an interactive, incremental and dynamic framework for mapping distributed ontologies in the Semantic Web.
author: id40instance
author: id50instance
author: id24instance
author: id5instance
booktitle: Proceedings of the ECAI Workshop on Knowledge Transformation, Lyon, France, 2002
is about: id107instance
is about: id69instance
title: MAFRA - An Ontology Mapping Framework in the Semantic Web
year: 2002

id1210instance
type: InProceedings
type: Publication
abstract: Recently, there has been an increased interest in the exploitation of background knowledge in the context of text mining tasks, especially text classification. At the same time, Kernel-based learning algorithms, especially Support Vector Machines, have become a dominant paradigm in the text mining community. This is also due to their capability to achieve more accurate learning results by incorporating a-priori knowledge by replacing standard linear kernels of bag-of-words with the so called ‘semantic’ kernels. In this paper we propose extensions and alternatives to previously proposed approaches to the design of semantic kernels by incorporating a variety of well-known measures of semantic similarity between terms. The experimental evaluation versus the standard linear kernel indicates that our approach improves performance in a variety of domains while being consistently superior in cases where little training data is available.
author: id2079instance
author: id766instance
author: id767instance
author: id768instance
booktitle: Proceedings of the 6th IEEE International Conference on Data Mining (ICDM 06), Hong Kong, 18-22 December 2006
has project: id42instance
is about: id134instance
is about: id68instance
is about: id93instance
month: December
note: TO APPEAR
title: Semantic Kernels for Text Classification based on Topological Measures of Feature Similarity
year: 2006

id1211instance
type: InProceedings
type: Publication
abstract: A number of approaches have been developed for combining wikis with semantic technologies. Many semantic wikis focus on enabling users to specify properties and relationships of individual elements. Complex schema information is typically not edited by the wiki user. Nevertheless, semantic wikis could benefit from taking existing schema information into account, and to allow users to specify additional information based on this schema. In this paper, we introduce an extension of Semantic MediaWiki that incorporates schema information from existing OWL ontologies. Based on the imported ontology, the system offers automatic classification of articles and aims at supporting the user in editing the wiki knowledge base in a logically consistent manner. We present our prototype implementation which uses the KAON2 ontology management system to integrate reasoning services into our wiki.
address: Budva, Montenegro
author: id2097instance
author: id2107instance
booktitle: Proceedings of the First Workshop on Semantic Wikis -- From Wikis to Semantics
has project: id42instance
has project: id49instance
has project: id50instance
has project: id67instance
is about: id68instance
is about: id79instance
is about: id80instance
month: June
title: Reusing Ontological Background Knowledge in Semantic Wikis
year: 2006

id1213instance
type: InProceedings
type: Publication
abstract: Developers used to object oriented programming have to make a paradigm shift in order to produce and manage Semantic Web data, e. g. RDF. In this paper we describe the tool RDFReactor which transforms a given ontology in RDF Schema into a familiar, dynamic, object-oriented Java API &#8211; at the push of a button. Developers then are able to interact with java instances, thus allowing them to stay in their own world. The generated proxy objects contain no state and delegate all method calls to RDF model updates and queries. RDFReactor potentially turns every Java developer into a Semantic Web application developer and enables them to use RDF correctly, efficiently and effectively without even knowing it. It is downloadable (GNU LGPL) at http:// rdfreactor.ontoware.org.
author: id2076instance
booktitle: Proc. of the Jena User Conference 2006
has project: id43instance
has project: id75instance
month: May
title: RDFReactor -- From Ontologies to Programatic Data Access
year: 2006

id1214instance
type: InProceedings
type: Publication
address: Huntsville, AL, USA
author: id2139instance
booktitle: Conceptual Structures at Work: 12th International Conference on Conceptual Structures
is about: id102instance
is about: id36instance
is about: id69instance
is about: id94instance
month: July
pages: 196 -- 212
series: LNCS
title: Exploring Relational Structures via FLE
volume: 3127
year: 2004

id1215instance
type: InProceedings
type: Publication
address: Dresden, Germany
author: id2139instance
booktitle: Using Conceptual Structures, Contributions to ICCS 2003
month: July
pages: 197 -- 210
title: An FCA Method for the Extensional Exploration of Relational Data
year: 2003

id1216instance
type: InProceedings
type: Publication
address: Stanford, CA, USA
author: id2139instance
author: id204instance
booktitle: Conceptual Structures: Broadening the Base, 9th International Conference on Conceptual Structures
month: July
pages: 143-156
series: LNCS
title: Formal Concept Analysis Methods for Dynamic Conceptual Graphs
volume: 2120
year: 2001

id1217instance
type: InProceedings
type: Publication
address: Darmstadt, Germany
author: id2139instance
booktitle: Working with Conceptual Structures - Contributions to ICCS 2000
month: July
pages: 284 -- 288
title: Spatial concepts - a rule exploration
year: 2000

id1218instance
type: InProceedings
type: Publication
abstract: iMapping is a visual technique for structuring information objects. It is based on research in the fields of visual mapping techniques, Information Visualisation and cognitive psychology. iMapping uses a Zooming User Interface to facilitate navigation and to help users maintain an overview in the knowledge space. An iMap is comparable to a large whiteboard where wiki-pages can be positioned like post-its but also nested into each other. Augmenting Wikis by providing spatial browsing and zooming facilities makes it easier to structure content in an intuitive way. Especially semantic wikis, which typically contain more fine-grained content, and stress the structure between information items, can benefit from a graphical approach like iMapping, that allows to display multiple such items and multiple wiki-pages in one view. This paper describes the iMapping approach in general, and briefly how it will be applied as a rich client front-end to the SemWiki engine.
author: id2076instance
author: id2115instance
author: id770instance
booktitle: Proceedings of the First Workshop on Semantic Wikis -- From Wiki To Semantics
has project: id75instance
is about: id102instance
is about: id53instance
is about: id60instance
is about: id68instance
is about: id69instance
is about: id81instance
is about: id86instance
is about: id95instance
month: June
title: iMapping Wiks - Towards a Graphical Environment for Semantic Knowledge Management
volume: 1
year: 2006

id1219instance
type: Publication
type: TechnicalReport
author: id2023instance
author: id2077instance
has project: id39instance
has project: id42instance
has project: id71instance
is about: id105instance
is about: id53instance
is about: id69instance
is about: id70instance
is about: id79instance
month: March
title: A Metamodel and UML Profile for Rule-extended OWL DL Ontologies - A Complete Reference
year: 2006

id1220instance
type: Publication
type: TechnicalReport
author: id2023instance
author: id2077instance
has project: id39instance
has project: id42instance
has project: id71instance
is about: id102instance
is about: id53instance
is about: id69instance
is about: id70instance
is about: id79instance
month: April
title: A Metamodel and UML Profile for Networked Ontologies - A Complete Reference
year: 2006

id1221instance
type: InProceedings
type: Publication
address: Montpellier, France
author: id2023instance
author: id2077instance
author: id84instance
booktitle: OTM 2006 Conferences
has project: id39instance
has project: id42instance
has project: id71instance
is about: id102instance
is about: id105instance
is about: id53instance
month: October
title: Formalism-Independent Specification of Ontology Mappings - A Metamodeling Approach
year: 2006

id1222instance
type: InProceedings
type: Publication
author: id2023instance
author: id2077instance
author: id194instance
author: id594instance
author: id771instance
author: id772instance
author: id773instance
booktitle: The 5th International Semantic Web Conference
has project: id39instance
is about: id150instance
is about: id69instance
is about: id79instance
month: November
title: A Model Driven Approach for Building OWL DL and OWL Full Ontologies
year: 2006

id1223instance
type: Proceedings
type: Publication
abstract: In the successful series of EON workshops we intend to bring together researchers and practitioners from the quickly developing research areas Ontologies and Semantic Web. Former EON workshops aimed at evaluating ontology-based tools, the this year's workshop focuses on the Evaluation of Ontologies (content, usability, etc.) themselves. Whereas some effort already was invested in reusing work from related research areas towards the end of Ontology Evaluation, often the basic premises of the web-like environment are forgotten or disregarded. Thus the main goal of this workshop is to lay the foundations for Web Ontology Evaluation. Ontologies now play an important role for many knowledge-intensive applications for which they provide a source of formally defined terms. They aim at capturing domain knowledge in a generic way and provide a commonly agreed understanding of a domain, which may be reused, shared, and operationalized across applications and groups. Numerous ontologies are already available and the number is growing rapidly. Still a well understood definition or even intuition about qualities that apply to ontologies is lacking. The large visibility of the Semantic Web already attracts industrial partners. Ontology-based tools depend more and more on the explicit knowledge captured in ontologies. A well-understood notion of Ontology Evaluation might lead to a consistent level of quality and thus acceptance by industry. For the future this might lead to certification efforts for such ontologies. The aim of this workshop is to ground Ontology Evaluation firmly on the needs of the Semantic Web, especially regarding its web-like characteristics like high interconnectivity, constant change and incompleteness. We will focus on the Semantic Web languages as standardized or proposed by the W3C: RDF(S), OWL and the rule language. We want to encourage and stimulate discussion about the current state of the art in Ontology Evaluation and its future direction. Currently,…
address: Edinburgh, Scotland
editor: id2097instance
editor: id20instance
editor: id122instance
editor: id644instance
has project: id42instance
has project: id43instance
has project: id49instance
is about: id150instance
is about: id69instance
is about: id70instance
is about: id79instance
is about: id80instance
month: May
note: Workshop at the WWW World Wide Web Conference 2006
title: Evaluation of Ontologies for the Web -- Proceedings of the 4th International EON Workshop 2006
year: 2006

id1226instance
type: Article
type: Publication
abstract: Durch den Einsatz von numerischen Modellen für ingenieurtechnische Problemstellungen, wie z. B. der FEM oder der FDM, können zunehmend komplexere Berechnungen in immer kürzerer Zeit bewältigt werden. Gleichzeitig ergibt sich jedoch bei dem Einsatz dieser Werkzeuge der Bedarf an Werten für die verschiedenen Modellparameter, von rein konstitutiven Kennwerten bis hin zu geometrischen Angaben, für deren Bestimmung zunehmend inverse Verfahren Anwendung finden. Bei der Nutzung dieser Methoden ist jedoch &#8211; insbesondere bei komplizierten Simulationen &#8211; mit sehr langen Berechnungszeiten zu rechnen. Gegenstand dieses Beitrags ist die Vorstellung einer Verfahrensklasse, die eine Abschätzung der Lösung solcher inverser Aufgaben auf der Basis von relativ wenigen Stützstellen ermöglicht. An die Verteilung der Stützstellen werden geringste Anforderungen gestellt, so daß diese wahlweise aus vorhergehenden Simulationen oder auch aus alternativen Quellen stammen können. Im Rahmen dieses Beitrags soll ausgehend von einer Einführung in den theoretischen Ansatz eine Strategie zur Beschleunigung der Lösung von inversen Problemstellungen und Optimierungsaufgaben an einem Beispiel aus dem Gebiet der Geomechanik vorgestellt werden.
author: id2139instance
author: id774instance
author: id775instance
journal: Bautechnik
month: July
number: 7/06
title: Effektiver Algorithmus zur Lösung von inversen Aufgabenstellungen - Anwendung in der Geotechnik
year: 2006

id1227instance
type: Article
type: Publication
author: id2084instance
author: id20instance
author: id2123instance
author: id57instance
has project: id42instance
has project: id43instance
has project: id50instance
has project: id71instance
is about: id102instance
is about: id79instance
journal: IEEE Intelligent Systems
month: July
number: 4
pages: 8-9
title: A Semantic Future for AI
volume: 21
year: 2006

id1228instance
type: InProceedings
type: Publication
address: Fredericton, New Brunswick, Canada
author: id2078instance
author: id2123instance
author: id57instance
author: id79instance
author: id717instance
booktitle: Proceedings of the 8th Int. Conference on Electronic Commerce (ICEC'06)
has project: id39instance
has project: id42instance
has project: id51instance
is about: id114instance
is about: id119instance
is about: id136instance
is about: id24instance
is about: id25instance
month: August
pages: 162 - 173
title: A Policy Framework for Trading Configurable Goods and Services in Open Electronic Markets
year: 2006

id122instance
type: InProceedings
type: Publication
abstract: With rising importance of knowledge interchange, many industrial and academic applications have adopted ontologies as their conceptual backbone. However, industrial and academic environments are very dynamic, thus inducing changes to application requirements. To fulfill these changes, often the underlying ontology must be evolved as well. As ontologies grow in size, the complexity of change management increases, thus requiring a well-structured ontology evolution process. In this paper we identify a possible six-phase evolution process and focus on providing the user with capabilities to control and customize it. We introduce the concept of an evolution strategy encapsulating policy for evolution with respect to user’s requirements.
author: id32instance
author: id30instance
author: id5instance
author: id94instance
booktitle: European Conf. Knowledge Eng. and Management (EKAW 2002)
is about: id70instance
pages: 285–300
title: User-Driven Ontology Evolution Management
year: 2002

id1230instance
type: InCollection
type: Publication
author: id2023instance
author: id2053instance
author: id2079instance
author: id20instance
booktitle: Semantic Web Technologies - Trends and Research in Ontology-based Systems
chapter: 4
has project: id42instance
has project: id49instance
is about: id104instance
is about: id53instance
is about: id68instance
is about: id71instance
is about: id79instance
is about: id93instance
month: June
pages: 51-70
title: Ontology Evolution
year: 2006

id1231instance
type: Book
type: Publication
editor: id57instance
editor: id633instance
editor: id6instance
has project: id42instance
has project: id49instance
is about: id110instance
is about: id51instance
is about: id68instance
is about: id69instance
is about: id71instance
is about: id79instance
is about: id80instance
isbn: 0470025964
month: June
title: Semantic Web Technologies - trends and research in ontology-based systems
year: 2006

id1232instance
type: Proceedings
type: Publication
editor: id14instance
editor: id2079instance
editor: id776instance
has project: id42instance
has project: id43instance
has project: id50instance
is about: id134instance
is about: id152instance
is about: id93instance
month: August
note: Workshop at the 22nd International Conference on Machine Learning (ICML 2005)
title: Proceedings of the Workshop on Learning in Web Search (LWS 2005)
year: 2005

id1233instance
type: InProceedings
type: Publication
author: id98instance
author: id611instance
author: id613instance
author: id755instance
author: id763instance
author: id777instance
author: id778instance
author: id779instance
author: id780instance
author: id781instance
author: id782instance
author: id783instance
author: id784instance
booktitle: Proceedings of the OntoLex Workshop at LREC
has project: id50instance
is about: id110instance
is about: id69instance
month: May
pages: 28-32
title: LingInfo: Design and Applications of a Model for the Integration of Linguistic Information in Ontologies
year: 2006

id1234instance
type: InProceedings
type: Publication
abstract: This demo abstract describes the SmartWeb Ontology-based Annotation system (SOBA). A key feature of SOBA is that all information is extracted and stored with respect to the SmartWeb Integrated Ontology (SWIntO). In this way, other components of the systems, which use the same ontology, can access this information in a straightforward way. We will show how information extracted by SOBA is visualized within its original context, thus enhancing the browsing experience of the end user.
author: id98instance
author: id586instance
author: id613instance
author: id756instance
author: id785instance
author: id786instance
author: id787instance
author: id788instance
author: id789instance
author: id790instance
booktitle: Proceedings of the EACL06 Demo Session
has project: id50instance
is about: id111instance
is about: id49instance
month: April
title: Generating and Visualizing a Soccer Knowledge Base
year: 2006

id1235instance
type: Article
type: Publication
author: id98instance
author: id110instance
author: id75instance
has project: id35instance
is about: id110instance
journal: Data & Knowledge Engineering (DKE)
number: 1
pages: 59-83
title: Ontology-driven Discourse Analysis for Information Extraction
volume: 55
year: 2005

id1236instance
type: InProceedings
type: Publication
abstract: To achieve better interoperability among intelligent applications, and to relieve knowledge engineers from the burden of developing ontologies from scratch, it is critical to reuse ontologies. However, there are two main reasons why the reuse of ontologies is rare: (1) current ontology repositories allow only simple keyword-based search facilities, and (2) even when a user finds an ontology, the information about the ontology quality and (re)usability is not available. In this paper, we present an Open Rating System based approach for ontology evaluation. The core Open Rating System model is extended with topic-specific trust to provide more accurate personalized ontology rankings. Our model is partially implemented in Knowledge Zone - a webbased ontology repository where users can submit their ontologies, annotate them with metadata, search for existing ontologies, find out their rankings based on user reviews, post their own reviews, and rate reviews.
address: Edinburgh, UK
author: id2133instance
author: id11instance
author: id55instance
author: id791instance
booktitle: Proceedings of the 4th International Workshop on Evaluation of Ontologies for the Web (EON2006) at the 15th International World Wide Web Conference (WWW 2006)
has project: id42instance
has project: id71instance
is about: id137instance
is about: id79instance
month: May
title: Topic-Specific Trust and Open Rating Systems: An Approach for Ontology Evaluation
year: 2006

id1237instance
type: Misc
type: Publication
author: id2048instance
author: id2instance
author: id33instance
author: id728instance
howpublished: 12th International Conference on Computing in Economics and Finance, Book of Abstracts p. 85
is about: id78instance
month: June
note: Limassol, Zypern
title: Applications of Kernel Methods in Financial Risk Management
year: 2006

id1238instance
type: InProceedings
type: Publication
abstract: The development and operation of value-added data services for mobile terminals still requires a lot of time, manpower, highly specialized know-how about telecommunication networks and financial resources, so for small and medium-sized enterprises (SME) it is difficult or even impossible to set up such services for their own use or for their customers. Since SME play an important economic and thus social role, often contribute to innovation and many of them have highly specialized know-how this is an untenable situation. The aim of the intended research-project MODIFRAME is therefore to develop and evaluate a technical framework which provides the complete infrastructure needed by SME to develop and operate mobile services.
address: Copenhagen, Denmark
author: id12instance
author: id2039instance
author: id2042instance
booktitle: m-Business Revisited - From Speculation to Reality. Proceedings of the 5th International Conference on Mobile Business (ICMB 2006)
is about: id59instance
month: June
title: A SME-friendly framework for the provision of mobile services
year: 2006

id1239instance
type: InProceedings
type: Publication
author: id57instance
author: id91instance
booktitle: International Conference on Web Services (ICWS'06)
has project: id38instance
has project: id42instance
has project: id51instance
is about: id119instance
is about: id136instance
is about: id41instance
month: September
title: Automatic Matchmaking of Web Services
year: 2006

id1240instance
type: Book
type: Publication
abstract: This study on ICT-skills certification in Europe was launched by Cedefop in early 2004 with the intention to help animating and promoting European level discussions and exchanges: (1) Within the eSkills Forum set up by the Commission in spring 2003 created to support cooperation between stakeholders and experts on ICT- and E-Business skills; (2) With the European and International Training industry and social partners engaged in ICT certification issues; (3) To prepare a next phase of the CEN/ISSS (European Committee of Normalization/Information Society Standardization System) ICT-Skills workshop in order to elaborate a European meta-ICT skills or qualifications framework. This issue has to be seen also in relation to current discussions on European level initiatives on Transparency (Europass), Credit Transfer and overarching European skills and qualification frameworks in view of realising wider policies linked to the Lisbon goals and agreed education and training objectives. The nature of the activities required specialist knowledge, skills and services in order to meet the demands of animating a continuing exchange and generating, reviewing, analyzing and reporting on thematically organized information and knowledge for underpinning the policy-making process in line with the European Union's eEurope action plan (in partnership with the industries' own efforts) as well as to identify and promote training solutions and certification in the area of ICT and E-Business skills and last but not least to further contribute to the implementation of the e-Learning Action Plan of the European Union.
author: id2062instance
author: id38instance
author: id601instance
author: id602instance
has project: id52instance
is about: id20instance
isbn: 92-896-0434-4
month: May
series: Cedefop Dossier series
title: ICT Skills Certification in Europe
volume: 13
year: 2006

id1241instance
type: InProceedings
type: Publication
abstract: Knowledge domains and their formal representations via ontologies are typically subject to change in practical applications. Additionally, engineering of ontologies often takes place in distributed settings where multiple independent users interact. Therefore, change management for ontologies becomes a crucial aspect for any kind of ontology management environment. This paper introduces a new RDF-centric versioning approach and an implementation called SemVersion. SemVersion provides structural and semantic versioning for RDF models and RDF-based ontology languages like RDFS.
address: Murcia, Spain
author: id2076instance
author: id792instance
booktitle: Proceedings of IADIS International Conference on WWW/Internet
has project: id43instance
has project: id75instance
is about: id104instance
is about: id29instance
is about: id61instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id80instance
month: October
title: SemVersion: An RDF-based Ontology Versioning System
year: 2006

id1242instance
type: InProceedings
type: Publication
abstract: Wikis tend to be used more and more in world-wide, intranet and increasingly even in personal settings. Current wikis are data islands. They are open for everyone to contribute, but closed for machines and automation. In this paper we define a wiki interchange format (WIF) that allows data exchange between wikis and related tools. Different from other approaches, we also tackle the problem of page content and annotations. The linking from formal annotations to parts of a structured text is analysed and described.
author: id2076instance
author: id692instance
booktitle: Proceedings of the First Workshop on Semantic Wikis -- From Wiki To Semantics
has project: id75instance
is about: id100instance
is about: id102instance
is about: id104instance
is about: id105instance
is about: id107instance
is about: id137instance
is about: id48instance
is about: id52instance
is about: id68instance
is about: id80instance
is about: id81instance
title: Towards a Wiki Interchange Format (WIF)
year: 2006

id1243instance
type: InProceedings
type: Publication
abstract: Ontologies have been widely accepted as the primary method of representing knowledge in the Semantic Web. Knowledge Elicitation (KE) is usually one of the first steps in building ontologies. A number of ontology editors such as Protege have been developed to assist users in building ontologies efficiently. However, traditional KE techniques, such as card sorting and laddering, are not yet supported, but performed manually and outside of such tools. In this paper we present a methodology and a corresponding plug-in for Protege that allows graphical ellicitation knowledge from documents using card sorting and laddering approaches. Our aim is to seamlessly integrate the KE techniques into the ontology building process to make ontology building more efficient and less error-prone. As a side-effect the persistent storage of card sorting and laddering results allows for later traceability of ontology development. KE largely depends on user interaction with the plug-in, therefore we employed user-centred design principles to capture requirements. After implementation, the plug-in was evaluated thoroughly against the requirements. The evaluation shows that this KE plug-in meets many of the user's expectations and indeed saves them considerable time when building ontologies.
address: Beijing, China
author: id20instance
author: id2132instance
author: id793instance
author: id794instance
booktitle: Asian Semantic Web Conference
has project: id42instance
has project: id71instance
is about: id102instance
is about: id69instance
is about: id79instance
month: September
pages: 552-565
series: LNCS
title: Knowledge Elicitation Plug-in for Protege: Card Sorting and Laddering
volume: 4185
year: 2006

id1244instance
type: Misc
type: Publication
author: id2023instance
author: id2053instance
author: id20instance
author: id2132instance
author: id98instance
has project: id42instance
howpublished: Poster and Demo at WWW'06
month: May
title: Question Answering on Top of the BT Digital Library
year: 2006

id1245instance
type: Article
type: Publication
author: id1876instance
author: id2042instance
author: id2072instance
author: id217instance
journal: Karlsruher Transfer
number: 33
pages: 6-10
title: io-port.net - Das Informationsportal für die Informatik
volume: 19
year: 2006

id1246instance
type: Publication
type: TechnicalReport
abstract: Increased availability of mobile computing, such as personal digital assistants (PDAs), creates the potential for constant and intelligent access to up-to-date, integrated and detailled information from the Web, regardless of one&#8217;s actual geographical position. Intelligent question-answering requires the representation of knowledge from various domains, such as the navigational and discourse context of the user, potential user questions, the information provided by Web services and so on, for example in the form of ontologies. Within the context of the SmartWeb project, we have developed a number of domain-specific ontologies that are relevant for mobile and intelligent user interfaces to open-domain question-answering and information services on the Web. To integrate the various domain-specific ontologies, we have developed a foundational ontology, the SmartSUMO ontology, on the basis of the DOLCE and SUMO ontologies. This allows us to combine all the developed ontologies into a single SmartWeb Integrated Ontology SWIntO. In this paper, we present the SmartSUMO ontology, describe the design choices we made in its construction, illustrate the use of the ontology through a number of applications, and discuss some of the lessons learned from our experiences.
author: id2084instance
author: id2123instance
author: id79instance
author: id98instance
author: id198instance
author: id610instance
author: id611instance
author: id613instance
author: id763instance
author: id780instance
author: id783instance
author: id795instance
author: id796instance
author: id797instance
author: id798instance
author: id799instance
author: id800instance
author: id801instance
author: id802instance
author: id803instance
author: id804instance
author: id805instance
has project: id50instance
is about: id108instance
is about: id119instance
is about: id55instance
is about: id60instance
is about: id69instance
is about: id70instance
is about: id79instance
month: July
title: DOLCE ergo SUMO: On Foundational and Domain Models in SWIntO (SmartWeb Integrated Ontology))
year: 2006

id1248instance
type: Article
type: Publication
abstract: Peer selection for query routing is a core task in peer-to-peer networks. Unstructured peer-to-peer systems (like Gnutella) ignore this problem, leading to an abundance of network traffic. Structured peer-to-peer systems (like Chord) enforce a particular, global way of distributing data among the peers in order to solve this problem, but then encounter problems of network volatility and conflicts with the autonomy of the peer data management. In this paper, we propose a new mechanism, INGA, which is based on the observation that query routing in social networks is made possible by locally available knowledge about the expertise of neighbors and a semantics-based peer selection function. We validate INGA by simulation experiments with different data sets. We compare INGA with competing peer selection mechanisms on resulting parameters like recall, message gain or number of messages produced.
author: id6instance
author: id83instance
author: id103instance
has project: id30instance
has project: id55instance
is about: id123instance
is about: id139instance
is about: id152instance
is about: id79instance
journal: IEEE Journal on Selected Areas in Communications
month: September
title: Semantic Social Overlay Networks
year: 2006

id1249instance
type: InProceedings
type: Publication
address: Arlington, VA, USA
author: id2023instance
author: id2053instance
author: id2132instance
booktitle: AAAI Fall Symposium On Semantic Web for Collaborative Knowledge Acquisition
has project: id42instance
has project: id71instance
is about: id102instance
is about: id70instance
is about: id71instance
is about: id79instance
is about: id93instance
month: October
pages: 70-77
title: Towards Semi-automatic Ontology Building Supported by Large-scale Knowledge Acquisition
volume: FS-06-06
year: 2006

id124instance
type: Article
type: Publication
abstract: Several challenges exist related to applying ontologies in real-world environments. The authors present an integrated enterprise-knowledge management architecture, focusing on how to support multiple ontologies and manage ontology evolution.
author: id40instance
author: id50instance
author: id53instance
author: id57instance
author: id5instance
has project: id4instance
is about: id107instance
is about: id1instance
is about: id69instance
is about: id70instance
journal: IEEE Intelligent Systems
number: 2
pages: 26-33
title: Ontologies for Enterprise Knowledge Management
volume: 18
year: 2003

id1250instance
type: Article
type: Publication
abstract: Viele werden sich erinnern: Bis vor ein paar Jahren galt eine Universität als eine Institution, deren Lehr- und Lerntätgikeiten zeitlichen und räumlichen grenzen unterworfen waren. Klassischer Frontalunterricht in gut gefüllten Seminarräumen und Hörsälen stand meist an der Tagesordnung, Jedoch, das Forschen, Lehren und Lernen wandelt sich: Mobilität und Flexibilität sind heute wichtiger denn je und haben sich in vielen Bereichen des täglichen Lebens zu Erfolgsfaktoren entwickelt. Kommunikation und Interaktion bereichern das universitäre Lehren und Lernen.
author: id2081instance
author: id29instance
author: id46instance
author: id87instance
author: id96instance
has project: id29instance
is about: id107instance
is about: id108instance
is about: id20instance
is about: id22instance
is about: id56instance
is about: id57instance
is about: id64instance
journal: Karlsruher Wirtschaftsspiegel
month: July
number: 49
pages: 52-53
title: Mobiler Campus: Forschen, Lehren und Lernen - zu jeder Zeit, an jedem Ort
volume: 2006/2007
year: 2006

id1251instance
type: Proceedings
type: Publication
editor: id2084instance
editor: id532instance
editor: id806instance
has project: id43instance
has project: id50instance
is about: id105instance
is about: id53instance
is about: id79instance
month: May
title: Proceedings of the WWW2006 Workshop on Reasoning on the Web, RoW06, Edinburgh, UK, May 2006
year: 2006

id1252instance
type: Book
type: Publication
author: id2084instance
author: id807instance
author: id808instance
has project: id38instance
is about: id36instance
is about: id79instance
isbn: 87-7307-768-2
month: July
title: Inspiration and Application. Contributions to ICCS 2006, 14th International Conference on Conceptual Structures, ICCS 2006
year: 2006

id1253instance
type: Book
type: Publication
author: id2084instance
author: id807instance
author: id808instance
has project: id50instance
is about: id36instance
is about: id79instance
month: July
series: Lecture Notes in Artificial Intelligence
title: Conceptual Structures: Inspiration and Application. 14th International Conference on Conceptual Structures, ICCS 2006, Aalborg, Denmark, July 2006, Proceedings
volume: 4068
year: 2006

id1254instance
type: InProceedings
type: Publication
abstract: The technical challenges associated with the development and deployment of ontologies have been subject to a considerable number of research initiatives since the beginning of the nineties. The economical aspects of these processes are, however, still poorly exploited, impeding the dissemination of ontology-driven technologies beyond the boundaries of the academic community. This paper aims at contributing to the alleviation of this situation by proposing ONTOCOM (ONTOlogy COst Model), a model to predict the costs arising in ontology engineering processes. We introduce a methodology to generate a cost model adapted to a particular ontology development strategy, and an inventory of cost drivers which influence the amount of effort invested in activities performed during an ontology life cycle. We further present the results of the model validation procedure, which covered an expert-driven evaluation and a statistical calibration on 36 data points collected from real-world projects. The validation revealed that ontology engineering processes have a high learning rate, indicating that the building of very large ontologies is feasible from an economic point of view. Moreover, the complexity of ontology evaluation, domain analysis and conceptualization activities proved to have a major impact on the final ontology engineering process duration.
author: id20instance
author: id83instance
author: id668instance
booktitle: Proceedings of the 5th International Semantic Web Conference (ISWC 2006)
has project: id42instance
is about: id114instance
is about: id125instance
is about: id126instance
is about: id150instance
is about: id69instance
is about: id70instance
is about: id79instance
is about: id85instance
note: to appear
pages: 625--639
series: Lecture Notes in Computer Science (LNCS)
title: ONTOCOM: A Cost Estimation Model for Ontology Engineering
volume: 4273
year: 2006

id1255instance
type: InProceedings
type: Publication
address: Buxton, UK
author: id98instance
booktitle: Proceedings of the International Workshop on Inference in Computational Semantics (ICOS)
has project: id50instance
is about: id110instance
month: April
title: Ingredients of a first-order account of bridging
year: 2006

id1256instance
type: InProceedings
type: Publication
abstract: The theoretical results achieved in the ontology engineering field in the last fifteen years are of incontestable value for the prospected large scale take-up of semantic technologies. Their range of application in real-world projects is, however, so far comparatively limited, despite the growing number of ontologies online available. This restricted impact was confirmed in a three month empirical study, in which we examined over 36 contemporary ontology development projects from a process- and costs-oriented perspective. In this paper we give an account of the results of this study. We conclude that ontology engineering research should strive for a unified, lightweight and component-based methodological framework, principally targeted at domain experts in addition to consolidating the existing approaches.
address: Montpellier, France
author: id83instance
author: id668instance
booktitle: The 5th International Conference on Ontologies, DataBases, and Applications of Semantics (ODBASE2006)
has project: id42instance
has project: id71instance
is about: id150instance
is about: id69instance
is about: id70instance
month: November
pages: 836--854
series: Lecture Notes in Computer Science (LNCS)
title: Ontology Engineering: A Reality Check
volume: 4275
year: 2006

id1257instance
type: InProceedings
type: Publication
author: id2048instance
author: id2instance
author: id33instance
author: id758instance
booktitle: Operations Research Proceedings 2006
is about: id30instance
is about: id39instance
is about: id74instance
is about: id78instance
month: September
pages: 1-6
title: Heuristic Optimization of Reinsurance Programs and Implications for Reinsurance Buyers
year: 2006

id1258instance
type: InProceedings
type: Publication
abstract: An ontology alignment is the expression of relations between different ontologies. In order to view alignments independently from the language expressing ontologies and from the techniques used for finding the alignments, we use a category-theoretical model in which ontologies are the objects. We introduce a categorical structure, called V-alignment, made of a pair of morphisms with a common domain having the ontologies as codomain. This structure serves to design an algebra that describes formally what are ontology merging, alignment composition, union and intersection using categorical constructions. This enables combining alignments of various provenance. Although the desirable properties of this algebra make such abstract manipulation of V-alignments very simple, it is practically not well fitted for expressing complex alignments: expressing subsumption between entities of two different ontologies demands the definition of non-standard categories of ontologies. We consider two approaches to solve this problem. The first one extends the notion of V-alignments to a more complex structure called W-alignments: a formalization of alignments relying on "bridge axioms." The second one relies on an elaborate concrete category of ontologies that offers high expressive power. We show that these two extensions have different advantages that may be exploited in different contexts (viz., merging, composing, joining or meeting): the first one efficiently processes ontology merging thanks to the possible use of categorical institution theory, while the second one benefits from the simplicity of the algebra of V-alignments.
author: id2084instance
author: id2107instance
author: id649instance
author: id727instance
booktitle: Proceedings of FOIS2006
has project: id42instance
has project: id43instance
has project: id50instance
is about: id53instance
is about: id55instance
is about: id58instance
is about: id79instance
month: November
note: To appear
title: Formalizing ontology alignment and its operations with category theory
year: 2006

id1259instance
type: InProceedings
type: Publication
address: Setúbal, Portugal
author: id2039instance
author: id2042instance
booktitle: Proceedings of the International Conference on E-Business (ICE-B 2006)
is about: id59instance
month: August
pages: 151-156
title: Notification Services For Mobile And Wireless Terminals
year: 2006

id125instance
type: InProceedings
type: Publication
abstract: An ontology over a period of time needs to be modified to reflect changes in the real world, changes in the user’s requirements, drawbacks in the initial design, to incorporate additional functionality or to allow for incremental improvement. Although changes are inevitable during the development and deployment of an ontology, most of the current ontology editors unfortunately do not provide enough support for efficient copying with changes. Since changes are the force that drives the evolution process, in this paper we discuss the requirements for the ontology editors in order to support ontology evolution.
author: id5instance
author: id94instance
booktitle: OntoWeb-SIG3 Workshop at the 13th International Conference on Knowledge Engineering and Knowledge Management EKAW 2002; Siguenza (Spain), 30th September 2002
is about: id70instance
title: Ontology Evolution within Ontology Editors
year: 2002

id1260instance
type: InProceedings
type: Publication
abstract: It seems to be a widely accepted notion that Small and Medium-sized Enterprises (SME) play an important economic and social role and often contribute to innovation. But at the present situation the development and operation of a service to be used with mobile and wireless terminals (mobile service) is not bearable for most of them due to technical reasons and the market structure. In this article we will discuss the SME-specific obstacles in m-business. We will also propose a technical framework as remedy for this situation.
address: Setúbal, Portugal
author: id12instance
author: id2039instance
author: id2042instance
booktitle: Proceedings of the International Conference on E-Business (ICE-B 2006)
is about: id59instance
month: August
pages: 169-174
title: Specific Challenges For Small and Medium-Sized Enterprises (SME) in M-Business
year: 2006

id1261instance
type: InProceedings
type: Publication
author: id2120instance
author: id29instance
booktitle: Proceedings of International Conference on Self-Organization and Autonomous Systems in Computing and Communications (SOAS 2006)
has project: id63instance
is about: id136instance
month: September
title: A roadmap towards autonomic service-oriented architectures
year: 2006

id1264instance
type: InProceedings
type: Publication
address: Bonn, Germany
author: id2064instance
author: id38instance
booktitle: Proceedings of the 6th International Business Information Management Association (IBIMA) Conference
is about: id19instance
month: June
pages: 207-212
title: New Use Scenarios For Ecatalog Systems: A Cross-Company Approach
year: 2006

id1265instance
type: InProceedings
type: Publication
abstract: Technical scenarios in areas like automotive or production systems will increasingly consist of a large number of components cooperating in potentially unlimited and dynamically changing networks to satisfy the functional requirements of their execution environment. Due to the high complexity it will be impossible to explicitly design the behaviour of the components for every potentially arising situation. Therefore, it will be necessary to leave an adequate degree of freedom allowing for a self-organised behaviour. Organic Computing (OC) has developed the vision of selforganising systems adapting robustly to dynamically changing environments without running out of control. This paper focuses on the design of a generic system architecture which allows for self-organisation but at the same time enables adequate reactions to control the, sometimes completely unexpected, emerging global behaviour of these self-organised technical systems.
author: id15instance
author: id2081instance
author: id29instance
author: id809instance
author: id810instance
booktitle: INFORMATIK 2006 -- Informatik für Menschen!
has project: id65instance
is about: id151instance
pages: 112--119
series: GI-Edition - Lecture Notes in Informatics (LNI)
title: Towards a generic observer/controller architecture for Organic Computing
volume: P-93
year: 2006

id1266instance
type: InProceedings
type: Publication
abstract: Integrating relational databases is recently acknowledged as an important vision of the Semantic Web research, however there is not many applications that are well-implemented and in large-scale real use. This paper introduces an in-use application deployed at China Academy of Traditional Chinese Medicine (CATCM). In this application, over 70 heterogeneous relational databases are semantically interconnected by an shared ontology with over 70 classes and 800 properties, providing semantic query and web search services to the Chinese Traditional Medicine (TCM) community like one huge database. A visualized mapping tool is developed to facilitate domain experts in defining semantic mappings from heterogeneous relational schemas to the shared ontology. The query interface is dynamically generated based on class definitions, and able to rewrite SPARQL queries to a set of SQL queries. An intuitive search interface enables user to get more accurate and reliable search results based on a concepts ranking mechanism. Feedbacks and evaluation results from CATCM indicate that they are mostly satisfied with this novel Semantic Web technologies enabled application.
address: Athens, USA
author: id2132instance
author: id811instance
author: id812instance
author: id813instance
author: id814instance
author: id815instance
author: id816instance
author: id844instance
booktitle: 4th International Semantic Web Conference (ISWC'06)
has project: id71instance
is about: id107instance
is about: id79instance
month: November
note: Best Paper Award
pages: 750-763
title: Towards a Semantic Web of Relational Databases: a Practical Semantic Toolkit and an In-Use Case from Traditional Chinese Medicine
year: 2006

id1267instance
type: InProceedings
type: Publication
author: id15instance
author: id2118instance
author: id29instance
author: id810instance
author: id817instance
booktitle: Informatik 2006 -- Informatik für Menschen
has project: id66instance
is about: id151instance
pages: 120--127
series: Lecture Notes in Informatics (LNI)
title: An Organic Architecture for Traffic Light Controllers
volume: P-93
year: 2006

id1268instance
type: Article
type: Publication
author: id2instance
author: id43instance
author: id728instance
is about: id24instance
is about: id25instance
journal: IADIS International Journal on WWW/Internet
month: June
number: 1
pages: 111-125
title: Classification of eBay Bidding Characteristics
volume: 4
year: 2006

id1269instance
type: InProceedings
type: Publication
author: id2076instance
author: id2097instance
author: id2107instance
author: id2115instance
booktitle: In Proceedings of the 2006 International Symposium on Wikis.
has project: id43instance
has project: id67instance
has project: id75instance
is about: id100instance
is about: id102instance
is about: id104instance
is about: id137instance
is about: id52instance
is about: id79instance
is about: id80instance
is about: id81instance
month: August
pages: 137-138
title: Semantic Wikipedia
year: 2006

id126instance
type: InProceedings
type: Publication
abstract: The vision of the Semantic Web can only be realized through proliferation of well-known ontologies describing different domains. To enable interoperability in the Semantic Web, it will be necessary to break these ontologies down into smaller, well-focused units that may be reused. Currently, three problems arise in that scenario. Firstly, it is difficult to locate ontologies to be reused, thus leading to many ontologies modeling the same thing. Secondly, current tools do not provide means for reusing existing ontologies while building new ontologies. Finally, ontologies are rarely static, but are being adapted to changing requirements. Hence, an infrastructure for management of ontology changes, taking into account dependencies between ontologies is needed. In this paper we present such an infrastructure addressing the aforementioned problems.
author: id40instance
author: id50instance
author: id53instance
author: id57instance
author: id5instance
booktitle: WWW
has project: id28instance
is about: id107instance
is about: id69instance
is about: id70instance
pages: 439-448
title: An Infrastructure for Searching, Reusing and Evolving Distributed Ontologies
year: 2003

id1270instance
type: InProceedings
type: Publication
address: Beijing, China
author: id2132instance
author: id811instance
booktitle: The Semantic Web - ASWC 2006 Workshop Proceedings
has project: id71instance
is about: id120instance
is about: id156instance
is about: id79instance
month: September
pages: 123-125
title: Preface to the Semantic e-Science Workshop
year: 2006

id1271instance
type: InProceedings
type: Publication
author: id1876instance
author: id2073instance
author: id2121instance
author: id2126instance
author: id2136instance
author: id2137instance
booktitle: EMISA 2006: Methoden, Konzepte und Technologien für die Entwicklung von dienstbasierten Informationssystemen
is about: id124instance
is about: id12instance
is about: id136instance
month: October
pages: 91-104
series: Lecture Notes in Informatics
title: Prozessorientierte Komposition von Diensten in der Doktorandenausbildung
volume: P-95
year: 2006

id1272instance
type: InProceedings
type: Publication
author: id1876instance
author: id2058instance
author: id2069instance
author: id2072instance
author: id2073instance
author: id2121instance
author: id2126instance
author: id2135instance
author: id2136instance
author: id2137instance
booktitle: Tagungsband des 13. Workshops Algorithmen und Werkzeuge für Petri-Netze (AWPN'06)
is about: id124instance
month: September
pages: 18-24
title: Ein Framework zur Modellierung und Analyse von XML-Netzen
year: 2006

id1273instance
type: InProceedings
type: Publication
address: Shanghai, China
author: id1876instance
author: id2073instance
author: id2121instance
author: id2126instance
booktitle: Proceedings of the IEEE International Conference on e-Business Engineering (ICEBE 2006)
is about: id124instance
is about: id12instance
is about: id136instance
month: October
pages: 670-673
title: A Service-oriented Information System for Collaborative Research and Doctoral Education
year: 2006

id1274instance
type: InProceedings
type: Publication
author: id2120instance
author: id2121instance
author: id378instance
author: id818instance
author: id819instance
author: id820instance
author: id821instance
booktitle: INFORMATIK 2006 - Informatik für Menschen (Band 1)
has project: id63instance
is about: id136instance
month: October
pages: 50-54
series: Lecture Notes in Informatics
title: Architektur für ein universitätsweit integriertes Informations- und Dienstmanagement
volume: P-93
year: 2006

id1275instance
type: InCollection
type: Publication
author: id2078instance
author: id2123instance
author: id57instance
author: id717instance
booktitle: Information Management and Market Engineering
has project: id39instance
is about: id114instance
is about: id119instance
pages: 11--28
series: Studies on eOrganisation and Market Engineering
title: Towards a Policy Framework for Open Electronic Markets
volume: 4
year: 2006

id1276instance
type: InProceedings
type: Publication
author: id2078instance
author: id626instance
author: id627instance
booktitle: Proceedings of the 40th Annual Hawaii International Conference on System Sciences
has project: id39instance
is about: id119instance
month: January
title: Formal Specification of Web Service Contracts for Automated Contracting and Monitoring
year: 2007

id1278instance
type: Book
type: Publication
abstract: Das erfolgreiche Management und damit das Planen, Steuern und Kontrollieren von unternehmensinternen und -übergreifenden Geschäftsprozessen stellt einen zentralen Erfolgsfaktor für Unternehmen dar. Ein Defizit bisheriger Modellierungssprachen, Methoden und Werkzeuge zum kennzahlenbasierten Management von Geschäftsprozessen besteht darin, dass Geschäftsprozesse und Kennzahlen in getrennten Schemata modelliert werden. Kausale Zusammenhänge zwischen Kennzahlen und Geschäftsprozessen werden bisher durch Plausibilitätsprüfungen ermittelt und können weder validiert noch verifiziert werden. Im Rahmen dieser Arbeit wird eine Vorgehensweise auf Basis von so genannten Performance-Netzen vorgestellt, die hierzu einen phasenübergreifenden Ansatz zum kennzahlenbasierten Management von Geschäftsprozessen anbietet. Performance-Netze sind eine neue Variante höherer Petri-Netze und erlauben die integrierte Darstellung von Geschäftsprozessen, der relevanten Kennzahlen, der dafür definierten Zielwerte und der entsprechenden Korrekturprozesse. Anhand von Beispielen wird gezeigt, wie Performance-Netze die schrittweise Modellierung von semi-formalen, anwendungsnahen einfachen Petri-Netzen zu formalen, maschinell ausführbaren kennzahlenbasierten höheren Petri-Netzen unterstützen. Die Architektur und prototypische Realisierung eines Modellierungs-, Simulations- und Kontrollwerkzeugs für Performance-Netze wird präsentiert. Am Beispiel einer Fallstudie wird die grundsätzliche Praktikabilität des kennzahlenbasierten Managements von Geschäftsprozessen mit Performance-Netzen und deren Implementierung gezeigt und evaluiert.
address: München
author: id2058instance
edition: (1)
is about: id124instance
isbn: 3-89963-406-3
month: September
note: Dissertation
title: Kennzahlenbasiertes Management von Geschäftsprozessen mit Petri-Netzen
year: 2006

id1279instance
type: InProceedings
type: Publication
abstract: Das erfolgreiche Management von über- und innerbetrieblichen logistischen Geschäftsprozessen stellt insbesondere bei der Realisierung von komplexen Logistikprojekten einen kritischen Erfolgsfaktor dar. Zur Unterstützung des Managements von Geschäftsprozessen in Supply Chains bedarf es einer strukturierten Modellierung, Analyse und Kontrolle der relevanten Geschäftsprozesse. XML-Netze, eine Variante höherer Petri-Netze, bieten dabei durch die Unterstützung der Modellierung und Manipulation struktur-ierter Prozessobjekte ein besonderes Einsatzpotenzial. Im Rahmen des Beitrags werden die Architektur, die Implementierungsaspekte und das Einsatzpotenzial des prototypisch implementierten Softwarewerkzeuges
address: Hannover
author: id1876instance
author: id2058instance
author: id2136instance
booktitle: Proceedings of the 19th Symposium on Simulationstechnique (ASIM'2006)
is about: id124instance
is about: id41instance
is about: id42instance
month: September
pages: 165-170
title: Simulation von Supply Chains mit Petri-Netzen
year: 2006

id127instance
type: InProceedings
type: Publication
abstract: An ontology-based knowledge management system uses an ontology to represent explicit specification of a business domain and to serve as a backbone for providing and searching for knowledge sources. But, dynamically changing business environment implies changes in the conceptualisation of a business domain that are reflected on the underlying domain ontologies. Consequently, these changes have effects on the performances and validity of the KM system. In this paper we present an approach for enabling consistency of the description of knowledge sources in an ontology-based KM system in the case of changes in the domain ontology. This approach is based on our research in the ontology evolution and ontology-based annotation of documents. The proposed method is implemented in our semantic annotation framework so that efficient acquiring and maintaining of ontology-based metadata is supported.
author: id13instance
author: id32instance
author: id94instance
booktitle: German Workshop on Experience Management 2002
is about: id70instance
pages: 65-77
title: Evolution of the Metadata in the Ontology-based Knowledge Management Systems
year: 2002

id1281instance
type: InProceedings
type: Publication
abstract: iMapping is a technique for visually structuring information objects. It supports the full range from informal note taking over semi-structured personal information management to formal knowledge models. With iMaps, users can easily go from overview to fine-grained structures while browsing, editing or refining the knowledge base in one comprehensive view. An iMap is comparable to a large white-board where information items can be positioned like post-its but also nested into each other. Spatial browsing and zooming as well as graphical editing facilities make it easy to structure content in an intuitive way. iMapping builds on a zooming user interface approach to facilitate navigation and to help users maintain an overview in the knowledge space. While a first implementation is being developed, iMapping is still in a conceptual stage. In this paper we describe the iMapping approach and how it tries to combine and extend the advantages of other approaches.
author: id2115instance
booktitle: Proceedings of the The 3rd International Semantic Web User Interaction Workshop (SWUI2006)
has project: id75instance
is about: id102instance
is about: id48instance
is about: id53instance
is about: id60instance
is about: id81instance
is about: id86instance
month: November
note: Poster presented at the The 3rd International Semantic Web User Interaction Workshop.
title: iMapping - a Graphical Approach to Semi-Structured Knowledge Modelling
year: 2006

id1282instance
type: Article
type: Publication
author: id2053instance
author: id57instance
author: id98instance
has project: id50instance
is about: id71instance
journal: Information, Wissenschaft und Praxis
month: October
note: see the special issue for more contributions related to the Semantic Web
number: 6-7
pages: 315-320
title: Ontologies on Demand? - A Description of the State-of-the-Art, Applications, Challenges and Trends for Ontology Learning from Text
volume: 57
year: 2006

id1283instance
type: InProceedings
type: Publication
author: id2084instance
author: id2107instance
author: id2123instance
author: id2133instance
author: id2147instance
author: id57instance
author: id98instance
author: id318instance
author: id611instance
author: id613instance
author: id763instance
booktitle: Proceedings of the ISWC 2006 Poster and Demo Session
has project: id50instance
is about: id107instance
is about: id110instance
is about: id119instance
is about: id49instance
is about: id53instance
is about: id64instance
is about: id69instance
is about: id70instance
is about: id79instance
month: November
title: SmartWeb: Mobile Access to the Semantic Web
year: 2006

id1284instance
type: Proceedings
type: Publication
editor: id2084instance
editor: id454instance
editor: id822instance
has project: id42instance
has project: id50instance
is about: id131instance
month: August
title: Proceedings of the ECAI-06 Second International Workshop on Neural-Symbolic Learning and Reasoning, NeSy'06, Riva del Garda, Italy, August 2006
year: 2006

id1285instance
type: InCollection
type: Publication
abstract: Techniques for reliably estimating development efforts are a fundamental requirement for a wide-scale dissemination of ontologies in real-world application settings. The parametric cost estimation model ONTOCOM is a first attempt to cope with the lack of instruments for business measurements in the field of ontology engineering. This paper is intended as a user guide to ONTOCOM. It describes how ontology engineers can customize the general-purpose model to particular process models and subsequently apply it in various development phases to calculate the estimated efforts.
author: id83instance
author: id668instance
author: id690instance
booktitle: Technologies for Business Information Systems
has project: id42instance
is about: id69instance
is about: id70instance
note: to appear
title: Cost estimation for ontology development: applying the ONTOCOM model
year: 2006

id1286instance
type: InProceedings
type: Publication
abstract: In the past, the focus of the computer industry has been to improve hardware performance and add more and more features to the software. As a result, more and more appliances surrounding us are equipped with embedded computational power and wireless communication. As such, they become ever more flexible and multifunctional, and almost indispensable in daily life. On the other hand, the resulting systems become increasingly complex and unreliable, posing new challenges to designer and user. Organic Computing (OC) has the vision to address the challenges of complex distributed systems by making them more life-like (organic), i.e. endowing them with abilities such as self-organization, self-configuration, self-repair, or adaptation. The designer's task is simplified, because it is no longer necessary to exactly specify the low-level system behavior in all possible situations that might occur, but instead leaving the system with a certain degree of freedom which allows it to react in an intelligent way to new situations. Also, use of such systems is simplified, as they can be controlled by setting few high-level goals, rather than having to manipulate many low-level parameters with unclear influence. In this paper, we give a general introduction to OC, and propose a generic observer-controller architecture as a framework for designing OC systems. Then, it is shown how to use this architecture at the example of a traffic light controller. The paper concludes with a summary and a discussion of future challenges.
author: id15instance
author: id2081instance
author: id2118instance
author: id29instance
author: id809instance
author: id810instance
author: id817instance
booktitle: Proceedings ISoLA 2006
has project: id65instance
has project: id66instance
is about: id151instance
month: November
title: Organic Computing - Addressing Complexity by Controlled Self-organization
year: 2006

id1287instance
type: Article
type: Publication
author: id1876instance
author: id2044instance
author: id38instance
is about: id106instance
is about: id113instance
is about: id122instance
is about: id124instance
is about: id20instance
is about: id24instance
is about: id41instance
is about: id61instance
is about: id85instance
is about: id99instance
journal: Information Systems
note: accepted for publication; to appear
title: Product Lines for Digital Information Products
year: 2006

id1288instance
type: InCollection
type: Publication
author: id2044instance
author: id38instance
booktitle: Software Engineering Education in the Modern Age: Challenges and Possibilities
note: to appear
pages: 128-146
series: LNCS
title: A Strategy for Content Reusability with Product Lines derived from Experience in Online Education
volume: 4309
year: 2006

id1289instance
type: InProceedings
type: Publication
abstract: A business process may be modeled in different ways by different modelers even when utilizing the same modeling language. An appropriate method for solving ambiguity issues in process models caused by the use of synonyms, homonyms or different abstraction levels for process element names is the use of ontologybased descriptions of process models. So-called semantic business process models promise to support business process interoperability and interconnectivity. But, for (semi-) automatic process interoperability and interconnectivity two problems need to be solved. How can similar terms for process element names be automatically discovered and how can semantic business process composition be facilitated. In this paper we will present solutions for these problems based upon an OWL DL-based description of Petri nets.
address: Ballarat, Victoria, Australia
author: id1876instance
author: id2072instance
author: id80instance
booktitle: The Fourth Asia-Pacific Conference on Conceptual Modelling (APCCM 2007)
month: January
note: to appear
title: Measuring Similarity between Semantic Business Process Models
year: 2007

id1290instance
type: InProceedings
type: Publication
address: Athens, USA
author: id2132instance
author: id811instance
author: id812instance
author: id813instance
author: id814instance
author: id815instance
author: id816instance
booktitle: Semantic Web Challenge at 4th International Semantic Web Conference (ISWC'06)
has project: id71instance
is about: id16instance
is about: id68instance
is about: id79instance
is about: id80instance
month: November
title: Dartgrid: a Semantic Web Toolkit for Integrating Heterogeneous Relational Databases
year: 2006

id1291instance
type: InProceedings
type: Publication
author: id2023instance
author: id2077instance
author: id57instance
booktitle: International Semantic Web Conference 2006 Workshop Proceedings
has project: id39instance
has project: id42instance
has project: id71instance
is about: id150instance
is about: id53instance
is about: id69instance
is about: id79instance
month: November
title: A MOF-based Metamodel and UML Syntax for Networked Ontologies
year: 2006

id1292instance
type: Article
type: Publication
author: id2078instance
author: id2097instance
author: id6instance
author: id79instance
author: id122instance
author: id285instance
has project: id28instance
has project: id39instance
has project: id50instance
has project: id51instance
is about: id119instance
is about: id136instance
is about: id69instance
is about: id70instance
is about: id80instance
is about: id85instance
journal: Journal of Applied Ontology
number: 2
pages: 163-202
title: Towards Ontologies for Formalizing Modularization and Communication in Large Software Systems
volume: 1
year: 2006

id1293instance
type: Proceedings
type: Publication
editor: id2084instance
editor: id20instance
has project: id39instance
has project: id42instance
has project: id43instance
has project: id50instance
is about: id79instance
month: October
note: In: Proceedings Informatik 2006, Vol. 2, pp. 289-362
series: Lecture Notes in Informatics Vol. P-94
title: Proceedings of the International Workshop on Applications of Semantic Technologies, AST2006, at Informatik2006, Dresden, Germany, October 2006.
volume: P-94
year: 2006

id1294instance
type: InProceedings
type: Publication
abstract: Die Entwicklung und Markteinführung mobiler und drahtloser Mehrwertdatendienste (mobile Dienste) erfordert immer noch einen hohen zeitlichen, finanziellen und personellen Aufwand, was für kleine und mittelständische Unternehmen (KMU) eine erhebliche Markteintrittsbarriere darstellt. Im vorliegenden Beitrag erörtern wir die Eigenheiten der zugrunde liegenden Technologien und die Marktsituation, die dies bedingen, und schlagen als Abhilfe ein technisches Framework zur vereinfachten Bereitstellung solcher Dienste vor.
address: Dresden
author: id12instance
author: id2039instance
author: id2042instance
booktitle: INFORMATIK 2006 - Informatik für Menschen (Band 1). Beiträge der 36. Jahrestagung der Gesellschaft für Informatik e.V. (GI)
is about: id59instance
month: October
pages: 195-200
title: KMU-spezifische Herausforderungen bei der Entwicklung und dem Betrieb mobiler Dienste
year: 2006

id1295instance
type: InProceedings
type: Publication
author: id98instance
author: id110instance
booktitle: Proceedings of the International Conference on Formal Ontology in Information Systems (FOIS)
has project: id50instance
is about: id111instance
is about: id53instance
month: November
note: to appear
title: Towards Foundational Semantics - Ontological Semantics Revisited -
year: 2006

id1297instance
type: InProceedings
type: Publication
abstract: OWL DL puts several constraints on the possibilities to talk about the elements of an ontology. In particular, it is not possible to make statements about the axioms of an ontology or to make higher-order statements about the classes and properties of an ontology. This lack of expressiveness may cause problems throughout the whole lifecycle of an ontology, and especially in its practical usage. In this paper we discuss different approaches to overcome these problems. We propose a metamodel for OWL DL that allows to express statements about ontology elements, including axioms. We further describe three possible groundings of the metamodel in OWL DL and present a number of tools which we developed to support the user in working with these models. Finally, we describe some use cases for the practical application of our approach.
address: Karlsruhe, Germany
author: id2023instance
author: id2053instance
author: id2097instance
author: id2143instance
author: id98instance
booktitle: Proceedings of the 2nd Workshop on Ontologies and Meta-Modeling
has project: id42instance
has project: id71instance
has project: id74instance
is about: id156instance
is about: id61instance
is about: id69instance
month: October
title: A Metamodel for Annotations of Ontology Elements in OWL DL
year: 2006

id1298instance
type: Publication
type: TechnicalReport
author: id98instance
has project: id74instance
is about: id153instance
is about: id53instance
month: October
note: X-Media deliverable ID2.1
title: blablba
year: 2006

id1299instance
type: InProceedings
type: Publication
abstract: Horn-SHIQ has been identified as a fragment of the description logic SHIQ for which inferencing is in PTime with respect to the size of the ABox. This enables reasoning with larger ABoxes in situations where the TBox is static, and represents one approach towards tractable description logic reasoning. In this paper, we show that reasoning in Horn-SHIQ, in spite of its low data-complexity, is ExpTime-hard with respect to the overall size of the knowledge base. While this result is not unexpected, the proof is not a mere modification of existing reductions since it has to account for the restrictions of Hornness. We establish the result for Horn-FLE, showing that Hornness does not simplify TBox reasoning even for very restricted description logics. Moreover, we derive a context-free grammar that defines Horn-SHIQ in a simpler and more intuitive way than existing characterisations.
author: id2084instance
author: id2107instance
author: id2139instance
booktitle: Proceedings of the 2nd Workshop on OWL: Experiences and Directions
has project: id42instance
has project: id50instance
has project: id70instance
is about: id54instance
is about: id58instance
month: November
series: CEUR Workshop Proceedings
title: On the complexity of Horn description logics
volume: 216
year: 2006

id129instance
type: InProceedings
type: Publication
abstract: The Semantic Web is intended to enable machine processability of web content and seems to be a solution for many drawbacks of the current Web. It is based on metadata that describe the formal semantics of Web contents. We present a novel, integrated and automated approach for migrating data-intensive Web applications into the Semantic Web.
author: id32instance
author: id40instance
author: id94instance
booktitle: Proc. of the 17th symposium on Proceedings of the 2002 ACM symposium on applied computing, SAC 2002, Madrid ,Spain
is about: id79instance
pages: 1100 - 1107
title: Migrating data-intensive Web Sites into the Semantic Web
year: 2002

id12instance
type: InProceedings
type: Publication
abstract: Topics in education are changing with an ever faster pace. Especially in the field of life-long learning the aspects that need to be taught by information providers must keep up to date with emerging topics. The courseware watchdog is a comprehensive module which allows users to focus on existing subfields of a discipline, but thereby be aware of important drifts and tendencies in the field.
author: id51instance
author: id57instance
author: id6instance
author: id76instance
author: id8instance
booktitle: Proceedings of E-Learn 2002: World Conference on E-Learning in Corporate, Government, Healthcare, & Higher Education, October 15-19 2002, Montreal, Canada
has project: id27instance
is about: id20instance
is about: id79instance
pages: 909-915
title: Accessing Distributed Learning Repositories through a Courseware Watchdog
year: 2002

id1303instance
type: Article
type: Publication
abstract: Domains and metric spaces are two central tools for the study of denotational semantics in computer science, but are otherwise very different in many fundamental aspects. A construction that tries to establish links between both paradigms is the space of formal balls, a continuous poset which can be defined for every metric space and that reflects many of its properties. On the other hand, in order to obtain a broader framework for applications and possible connections to domain theory, generalized ultrametric spaces (gums) have been introduced. In this paper, we employ the space of formal balls as a tool for studying these more general metrics by using concepts and results from domain theory. It turns out that many properties of the metric can be characterized via its formal-ball space. Furthermore, we can state new results on the topology of gums as well as two new fixed point theorems, which may be compared to the Prieß-Crampe and Ribenboim theorem, and the Banach fixed point theorem, respectively. Deeper insights into the nature of formal-ball spaces are gained by applying methods from category theory. Our results suggest that, while being a useful tool for the study of gums, the space of formal balls does not provide the hoped-for general connection to domain theory.
author: id2107instance
is about: id132instance
is about: id133instance
is about: id94instance
journal: Theoretical Computer Science
month: December
number: 1--2
pages: 30--49
title: Generalized Ultrametric Spaces in Quantitative Domain Theory
volume: 368
year: 2006

id1305instance
type: InProceedings
type: Publication
author: id2079instance
author: id766instance
author: id767instance
author: id768instance
booktitle: LWA 2006: Lernen - Wissensentdeckung - Adaptivität, Berlin, 9. - 11. Oktober 2006, Hildesheim, Germany
has project: id42instance
is about: id134instance
is about: id93instance
month: October
note: Knowledge Discovery, Data Mining, and Machine Learning (KDML 2006) Track
series: Hildesheimer Informatik-Berichte
title: Designing Semantic Kernels as Implicit Superconcept Expansions
volume: 1-2006
year: 2006

id1306instance
type: InProceedings
type: Publication
abstract: In software engineering, the notion of unit testing was successfully introduced and applied. Unit tests are easy manageable tests for small parts of a program - single units. They proved especially useful to capture unwanted changes and side effects during the maintenance of a program, and they grow with the evolution of the program. Ontologies behave quite differently than program units. As there is no information hiding in ontology engineering, and thus no black box components, at first the idea of unit testing for ontologies seems not applicable. In this paper we motivate the need for unit testing, describe the adaptation to the unit testing approach, and give use cases and examples.
address: Montpellier, France
author: id2097instance
author: id122instance
booktitle: Proceedings of the 1st International Workshop on Ontology content and evaluation in Enterprise
has project: id42instance
is about: id103instance
is about: id105instance
is about: id150instance
is about: id156instance
is about: id69instance
is about: id70instance
month: October
title: Unit tests for ontologies
year: 2006

id1307instance
type: InProceedings
type: Publication
abstract: Precise modeling of business process models has paved the way to realize off-the-self information systems that include allocations of resources, communication services, or hardware devices to users. Changes in business strategies or new business opportunities may result in modifications of implemented functionalities of information systems and their underlying business process models. The result of these modifications are business process model variants that have to be distinguished when business processes are redesigned. In this paper, we propose an algorithm for determing semantic similarities between business process model variants to faciliate process redesign. Our approach is based upon an OWL DL-based description of Petri nets. So-called semantic business process models make it possible to describe Petri net based process model variants in a data format, which supports ontological reasoning.
address: Seoul, Korea, March 11 - 15, 2007
author: id1876instance
author: id2072instance
booktitle: The 22nd Annual ACM Symposium on Applied Computing
month: March
note: (to appear)
title: How To Detect Semantic Business Process Model Variants?
year: 2007

id1308instance
type: InProceedings
type: Publication
author: id1876instance
author: id2135instance
booktitle: EMISA 2006 - Methoden, Konzepte und Technologien für die Entwicklung von dienstbasierten Informationssystemen
month: September
pages: 77 - 90
series: Lecture Notes in Informatics
title: Unterstützung von Kollaboration im Rahmen der Softwareentwicklung auf Basis Service-orientierter Architekturen
volume: P-95
year: 2006

id1309instance
type: InProceedings
type: Publication
author: id98instance
author: id613instance
author: id755instance
author: id778instance
booktitle: Proceedings of the Demo Session at the International Semantic Web Conference (ISWC)
has project: id50instance
is about: id110instance
is about: id49instance
month: November
title: SOBA: SmartWeb Ontology-based Annotation
year: 2006

id130instance
type: InProceedings
type: Publication
author: id13instance
author: id6instance
author: id31instance
booktitle: Proc. of SAAKM 2002 -Semantic Authoring, Annotation & Knowledge Markup, ECAI 2002 Workshop July 22-26, 2002 , Lyon, France
has project: id23instance
is about: id49instance
is about: id81instance
pages: 27-34
title: S-CREAM -- Semi-automatic CREAtion of Metadata
year: 2002

id1310instance
type: InCollection
type: Publication
author: id98instance
author: id612instance
author: id613instance
booktitle: Ontology Learning from Text: Methods, Evaluation and Applications
has project: id50instance
is about: id71instance
month: July
series: Frontiers in Artificial Intelligence and Applications
title: Ontology Learning from Text: An Overview
volume: 123
year: 2005

id1311instance
type: Publication
type: TechnicalReport
abstract: The goal of this document is to present the requirements for Knowledge Ac-quisition from text in the context of the X-Media project. Acquisition in X-Media will be performed via Automatic Document Annotation based on Information Extraction from text. The requirements analysis here presented focuses on key limitations of the existing IE technology with respect to the project&#8217;s goals, namely limited capability of coping with large-scale (both considering the size of corpora and that of the ontology and of the KB), lack of portability of acqui-sition models, limited or no user interaction methodology and limited use of background knowledge.
author: id2131instance
author: id225instance
author: id31instance
author: id555instance
author: id557instance
author: id574instance
has project: id74instance
is about: id102instance
is about: id110instance
is about: id137instance
is about: id49instance
is about: id64instance
is about: id79instance
is about: id81instance
is about: id83instance
month: September
title: Requirement Analysis of Knowledge Acquisition from Texts, Deliverable ID 5.1
year: 2006

id1313instance
type: Publication
type: TechnicalReport
abstract: This deliverable discusses issues concerned with the management of uncertainty re-lated to the content of multimedia objects. It provides working definitions of relevant terminologies, discusses general and specific requirements for the management of un-certainty and gives a summary of existing approaches that have been proposed to deal with uncertainty.
author: id2040instance
author: id2143instance
author: id6instance
author: id98instance
author: id557instance
author: id825instance
author: id827instance
has project: id74instance
is about: id102instance
is about: id53instance
month: September
title: Requirement Analysis of Uncertainty in the Management of Multimedia Objects in X-Media
year: 2006

id1314instance
type: InProceedings
type: Publication
author: id2123instance
author: id2143instance
author: id98instance
booktitle: In Proceedings of the 1st International Workshop on Semantic Media Adaptation and Personalization. Athen, Greece
has project: id74instance
is about: id48instance
is about: id60instance
month: December
title: Rules for an Ontology-based Approach to Adaptation
year: 2006

id1315instance
type: Misc
type: Publication
abstract: In der Forschung um das Semantic Web werden Technologien entwickelt, die auf breites Interesse in vielen Anwendungsgebieten stoßen. So z.B. im Wissensmanagement und im Ubiquitous Computing.
author: id2084instance
author: id57instance
has project: id50instance
has project: id71instance
howpublished: Computer Zeitung 37 (40), 2nd of October 2006, p. 21.
is about: id102instance
is about: id79instance
month: October
title: Wissensmanagement profitiert von Semantiktechnologien
year: 2006

id1317instance
type: InProceedings
type: Publication
author: id2079instance
author: id283instance
booktitle: Advances in Web Mining and Web Usage Analysis, Revised Selected Papers of the 6th International Workshop on Knowledge Discovery on the Web, WebKDD 2004, Seattle, WA, USA, August 22-25, 2004
has project: id42instance
has project: id44instance
is about: id134instance
is about: id137instance
is about: id93instance
note: REPRINT
number: 3932
pages: 149-166
series: Lecture Notes in Computer Science
title: Boosting for Text Classification with Semantic Features
year: 2006

id1318instance
type: Publication
type: TechnicalReport
author: id2091instance
author: id711instance
author: id712instance
month: August
series: 06/04
title: The Influence of Learning on Rate of Evolution
year: 2006

id1319instance
type: Misc
type: Publication
abstract: This tutorial takes a detailed view to several human language technical aspects and actual approaches that use HLT for automating Semantic Web specific knowledge acquisition tasks such as ontology learning and population. The tutorial will cover some key open-source HLT tools, thus enabling the participants to put easily their newly learned skills into practice. This will be followed by a number of example Semantic Web applications.
author: id2053instance
author: id404instance
author: id643instance
author: id829instance
author: id82instance
has project: id42instance
has project: id49instance
howpublished: Tutorial at EKAW2006
is about: id110instance
is about: id71instance
is about: id79instance
month: October
title: Human Language Technology and Knowledge Acquisition for the Semantic Web
year: 2006

id1320instance
type: InProceedings
type: Publication
abstract: Motivated by basic ideas from formal concept analysis, we propose two ways to directly encode closure operators on finite sets in a 3-layered feed forward neural network.
address: Hyderabad, India
author: id2139instance
booktitle: Proceedings of the Third International Workshop on Neural-Symbolic Learning and Reasoning
has project: id70instance
has project: id71instance
is about: id129instance
is about: id131instance
is about: id36instance
is about: id58instance
month: January
title: Encoding Closure Operators into Neural Networks
year: 2007

id1321instance
type: Article
type: Publication
author: id2146instance
author: id830instance
author: id831instance
author: id832instance
journal: Annals of Mathematics and Artificial Intelligence
title: Split-Combination approaches to merging possibilistic knowledge bases
year: 2006

id1322instance
type: Article
type: Publication
author: id2146instance
author: id830instance
journal: International Journal of Information Science
number: 1-3
pages: 49-63
title: Rough operators on Boolean Algebras
volume: 173
year: 2005

id1323instance
type: Article
type: Publication
author: id2146instance
author: id830instance
author: id831instance
journal: International Journal of Fundamenta Informaticae
number: 2-3
pages: 389-407
title: Adaptive Merging of Prioritized Knowledge Bases
volume: 71
year: 2006

id1326instance
type: Proceedings
type: Publication
editor: id29instance
editor: id833instance
editor: id834instance
editor: id835instance
is about: id151instance
month: August
title: Biologically Inspired Cooperative Computing
year: 2006

id1327instance
type: InProceedings
type: Publication
abstract: We investigate cumulated clauses on a set of attributes consisting of concept descriptions of the description logic FLE. This kind of conceptual statements is argued to be close to intuitive human reasoning. We provide a deduction calculus for cumulated clauses on FLE that is obviously sound and give an elaborated proof for its completeness.
author: id2139instance
booktitle: Inspiration and Application - Contributions to ICCS 2006
has project: id70instance
is about: id102instance
is about: id105instance
is about: id36instance
is about: id58instance
month: July
pages: 188 - 201
title: A Deduction Calculus for Cumulated Clauses on FLE Concept Descriptions
year: 2006

id1328instance
type: InProceedings
type: Publication
address: Osnabrück, Germany
author: id2131instance
author: id98instance
booktitle: Proceedings of the Workshop on Ontologies in Text Technologies OTT 2006
has project: id42instance
has project: id74instance
is about: id100instance
is about: id110instance
is about: id111instance
is about: id113instance
is about: id134instance
is about: id152instance
is about: id49instance
is about: id71instance
is about: id79instance
is about: id93instance
month: August
title: Learning Patterns from the Web - Evaluating the Evaluation Functions - Extended Abstract
year: 2006

id1329instance
type: InProceedings
type: Publication
author: id2072instance
author: id769instance
note: submitted for publication
title: Automatic User Assistance For Business Process Decomposition
year: 2006

id132instance
type: InProceedings
type: Publication
abstract: The Web, the largest unstructured database of the world, has greatly improved access to documents. However, documents on the Web are largely disorganized. Due to the distributed nature of the World Wide Web it is difficult to use it as a tool for information and knowledge management. Therefore, users doing the difficult task of exploring the Web have to be supported by intelligent means. This paper proposes an approach for document discovery building on a comprehensive framework for ontology-focused crawling of Web documents. Our framework includes means for using a complex ontology and associated instance elements. It defines several relevance computation strategies and provides an empirical evaluation which has shown promising results.
author: id50instance
author: id80instance
booktitle: Proc. of the Symposium on Applied Computing 2003 (SAC 2003), March 9-12, Melbourne, Florida, USA
has project: id4instance
is about: id100instance
is about: id102instance
is about: id1instance
is about: id79instance
pages: 1174-1178
title: Ontology-Focused Crawling of Web Documents
year: 2003

id1330instance
type: InProceedings
type: Publication
abstract: The paper reports on the activities and results of a survey of certification schemes of ICT professionals across Europe towards harmonisation. The survey was undertaken by a consortium of nine organisations in Europe. The survey covers 36 professional informatics societies in 32 European countries, representing more than 400.000 ICT professionals in Europe. The European countries directly involved and represented in the consortium are the leading national professional informatics societies in Estonia, Germany, Hungary, Italy and United Kingdom. The paper describes the survey approach developed, survey methodology applied and overviews and discusses preliminary results of the survey activity.
author: id2062instance
author: id99instance
booktitle: Exploiting the Knowledge Economy
has project: id57instance
month: October
pages: 1602 - 1609
title: Survey of Certification Scheme of ICT Professionals across Europe towards Harmonisation - The Harmonise Project
volume: 3
year: 2006

id1331instance
type: InCollection
type: Publication
address: Karlsruhe
author: id2instance
author: id836instance
author: id837instance
booktitle: Studies on eOrganisation and Market Engineering
pages: 165-176
title: Utilizing Financial Models in Market Design: Search for a Benchmark Model
volume: 4
year: 2006

id1332instance
type: InCollection
type: Publication
address: Karlsruhe
author: id2instance
author: id717instance
author: id838instance
booktitle: Studies on eOrganisation and Market Engineering
pages: 101-112
title: Using Network Analysis for Fraud Detection in Electronic Markets
volume: 4
year: 2006

id1333instance
type: InProceedings
type: Publication
author: id2094instance
author: id2096instance
author: id2instance
booktitle: Proceedings of the 30th Annual Conference of the German Classification Society (GfKI 2006)
pages: 1-9
title: Foreign Exchange Trading with Support Vector Machines
year: 2006

id1335instance
type: InCollection
type: Publication
author: id2058instance
author: id839instance
booktitle: Monitoring of Regional Labour Markets in European States. Concepts, Experiences and Perspectives
is about: id107instance
is about: id125instance
is about: id28instance
month: December
title: Labour Market Monitoring in the Region Rhine-Main in Germany. An Information and Communication Approach.
year: 2006

id1336instance
type: Proceedings
type: Publication
editor: id2084instance
editor: id594instance
editor: id840instance
editor: id841instance
has project: id42instance
has project: id50instance
has project: id70instance
is about: id105instance
is about: id53instance
is about: id58instance
is about: id69instance
is about: id79instance
month: November
series: CEUR Workshop Proceedings
title: Proceedings of the Second Workshop OWL - Experiences and Directions, OWLED2006
volume: 216
year: 2006

id1337instance
type: InProceedings
type: Publication
author: id2139instance
booktitle: Proceedings of the 5th Conference on Formal Concept Analysis
is about: id36instance
is about: id53instance
month: February
title: Some Notes on Pseudo-Intents
year: 2007

id1338instance
type: Article
type: Publication
author: id2105instance
author: id845instance
journal: Computational Economics
note: to appear
title: How Robust is the Equal Split Norm? Responsive Strategies, Selection Mechanisms and the Need for Economic Interpretation of Simulation Parameters
year: 2006

id1339instance
type: Misc
type: Publication
author: id2105instance
author: id2instance
author: id36instance
howpublished: 1st International Conference on Economic Sciences with Heterogeneous Interacting Agents (WEHIA 2006), University of Bologna, Italy
month: July
title: Market clearing prices in an artificial stock market
year: 2006

id133instance
type: Proceedings
type: Publication
editor: id6instance
editor: id8instance
editor: id95instance
editor: id96instance
is about: id102instance
note: Proceedings der Konferenz WM2003. Luzern, CH, April 2-4. Lecture Notes in Informatics
title: WM2003 - Professionelles Wissensmanagement - Erfahrungen und Visionen
year: 2003

id1340instance
type: InCollection
type: Publication
author: id2105instance
author: id2instance
author: id36instance
author: id837instance
booktitle: Information management and market engineering
month: September
pages: 155-164
title: Portfolio Selection in an Artificial Stock Market
year: 2006

id1341instance
type: InProceedings
type: Publication
abstract: In this paper, we investigate state-of-the-art technologies in the area of modular ontologies and corresponding logical formalisms. We compare the strengths and weaknesses of different formalisms for modular ontologies in their ability to support networked, dynamic and distributed ontologies, as well as the reasoning capability over these ontologies. The comparison result shows limitations of existing formalisms to fully address the need of modular ontologies in the given setting, and possible future extensions to overcome those limitations.
address: Hyderabad, India
author: id2023instance
author: id2132instance
author: id846instance
booktitle: International Joint Conference on Artificial Intelligence 2007 (IJCAI'07) Workshop SWeCKa
has project: id71instance
is about: id156instance
is about: id58instance
month: January
note: To appear
title: A Survey of Formalisms for Modular Ontologies
year: 2007

id1342instance
type: InProceedings
type: Publication
abstract: In this paper we describe an infrastructure for query answering over distributed ontologies on the Semantic Web. This infrastructure addresses (i) the coordination of multiple nodes using metadata about the provided resources managed in a decentralized registry and (ii) the mediation between heterogeneous ontologies via an expressive mapping formalism along with corresponding reasoning algorithms for query answering. Our approach is based on a virtual integration that exhibits a semantics as if all ontologies were integrated locally. Practically, the distributed ontologies still reside on the remote peers, and only the parts relevant for answering the query need to be retrieved to the local node. Experimental evaluations with the implementation in KAONp2p show that the approach is very promising, as the performance of query answering is essentially dominated by the size of the data, and only slightly affected by the degree of distribution and heterogeneity.
address: Seoul, Korea
author: id2023instance
author: id2132instance
booktitle: Proceedings of The 22nd Annual ACM Symposium on Applied Computing (SAC)
has project: id71instance
is about: id123instance
is about: id156instance
is about: id80instance
month: March
note: To appear
title: A Decentralized Infrastructure for Query Answering over Distributed Ontologies
year: 2007

id1344instance
type: InProceedings
type: Publication
abstract: Semantic Wikis allow users to semantically annotate their Wiki content. The particular annotations can differ in expressive power, simplicity, and meaning. We present an elaborate conceptual model for semantic annotations, introduce a unique and rich Wiki syntax for these annotations, and discuss how to best formally represent the augmented Wiki content. We improve existing navigation techniques to automatically construct faceted browsing for semistructured data. By utilising the Wiki annotations we provide greatly enhanced information retrieval. Further we report on our ongoing development of these techniques in our prototype SemperWiki.
author: id13instance
author: id2076instance
author: id692instance
author: id849instance
author: id850instance
booktitle: Proceedings of the First Workshop on Semantic Wikis -- From Wiki To Semantics
has project: id43instance
has project: id67instance
has project: id75instance
is about: id137instance
is about: id52instance
is about: id79instance
is about: id81instance
month: June
title: Annotation and Navigation in Semantic Wikis
year: 2006

id1345instance
type: InProceedings
type: Publication
abstract: Wikis are becoming popular knowledge management tools. Analysing knowledge management requirements, we observe that wikis do not fully support structured search and knowledge reuse. We show how Semantic wikis address the requirements and present a general architecture. We introduce our SemperWiki prototype which offers advanced information access and knowledge reuse.
author: id11instance
author: id2076instance
author: id692instance
author: id851instance
booktitle: Database and Expert Systems Applications
has project: id67instance
has project: id75instance
is about: id102instance
is about: id137instance
is about: id52instance
is about: id79instance
is about: id81instance
month: September
pages: 509-518
title: Semantic Wikis for Personal Knowledge Management
volume: 4080/2006
year: 2006

id1346instance
type: Article
type: Publication
author: id15instance
author: id548instance
author: id549instance
journal: Applied Soft Computing Journal
title: Envolving en-route caching strategies for the internet
year: 2006

id1347instance
type: Article
type: Publication
author: id15instance
author: id550instance
author: id551instance
journal: Journal on Experimental Algorithms
title: In search for efficient heuristics for minimum width graph layering with consideration of dummy nodes
year: 2006

id1348instance
type: InProceedings
type: Publication
abstract: The multi-depot vehicle routing problem (MDVRP) is a very challenging part of supply chain optimization. We propose here a simple yet powerful heuristic for the MDVRP with an integrated look-ahead. Compared to other state-of-the-art approaches, our heuristic is significantly faster, but yields competitive results and even found several new best solutions on a set of standard benchmark problems.
author: id15instance
author: id198instance
author: id852instance
booktitle: Wirtschaftsinformatik 2007
title: A fast look-ahead heuristic for the multi-depot vehicle routing problem
year: 2007

id1349instance
type: InProceedings
type: Publication
author: id15instance
author: id198instance
author: id853instance
booktitle: Operations Research 2006
title: Transport Channel Selection
year: 2006

id134instance
type: InProceedings
type: Publication
author: id6instance
author: id23instance
booktitle: Proc. Research Notes of the 10th Conference of the European Chapter of the Association for Computational Linguistics, April 12-17, Budapest, Hungary
is about: id71instance
pages: 147-150
title: Word classification based on combined measures of distributional and semantic similarity
year: 2003

id1350instance
type: InProceedings
type: Publication
author: id15instance
author: id2127instance
booktitle: Parallel Problem Solving from Nature
pages: 523-532
series: LNCS
title: About selecting the personal best in multi-objective particle swarm optimization
volume: 4193
year: 2006

id1351instance
type: InProceedings
type: Publication
author: id15instance
author: id553instance
author: id854instance
booktitle: Genetic and Evolutionary Computation Converence
pages: 51-58
title: Particle swarm with speciation and adaption in a dynamic environment
year: 2006

id1352instance
type: InProceedings
type: Publication
author: id15instance
author: id702instance
author: id855instance
booktitle: Applications of Evolutionary Computation
pages: 764-775
series: LNCS
title: The role of representations in dynamic knapsack problems
volume: 3907
year: 2006

id1353instance
type: InProceedings
type: Publication
author: id15instance
author: id702instance
author: id855instance
booktitle: Applications of Evolutionary Computation
pages: 764-775
series: LNCS
title: The role of representations in dynamic knapsack problems
volume: 3907
year: 2006

id1354instance
type: InProceedings
type: Publication
author: id15instance
author: id72instance
author: id700instance
booktitle: Applications of Evolutionary Computation
pages: 753-762
series: LNCS
title: Intergrating techniques for statistical ranking into evolutionary algorithms
volume: 3907
year: 2006

id1356instance
type: InProceedings
type: Publication
author: id2058instance
author: id109instance
booktitle: 4. Deutsche ORACLE Business-Software Anwenderkonferenz
is about: id124instance
is about: id40instance
is about: id61instance
month: November
pages: 166-168
title: Prozessorientiertes Management und Visualisierung von Supply Chains
year: 2006

id1359instance
type: InProceedings
type: Publication
address: Paphos, Cyprus
author: id2064instance
author: id38instance
booktitle: Proceedings of the 8th International Conference on Enterprise Information Systems
month: May
pages: 69-76
title: The State of e-Business in the German Electronic Consumer Goods Industry
year: 2006

id1360instance
type: InProceedings
type: Publication
address: Wisla, Poland
author: id2064instance
author: id38instance
booktitle: Proceedings of the International Multiconference on Computer Science and Information Technology
month: November
pages: 281-288
title: Towards an Open e-Business Collaboration Community
year: 2006

id1361instance
type: InProceedings
type: Publication
abstract: We present a user-centered model for porting natural language interfaces (NLIs) between domains efficiently. The model assumes that domain experts without any background knowledge about computational linguistics will perform the customization of the NLI to a specific domain. In fact, it merely requires familiarity with the underlying knowledge base as well as with a few basic subcategorization types. Our model is iterative in the sense that the adaption of the NLI is performed in several cycles on the basis of the questions which the NLI failed to answer, thus iteratively increasing the coverage of the system. We provide experimental evidence in form of a user study as well as a case study involving a real-world application corroborating that our model is indeed a feasible way of customizing the interface to a certain domain.
author: id2023instance
author: id98instance
author: id631instance
booktitle: Proceedings of the International Conference on Intelligent User Interfaces
has project: id50instance
has project: id74instance
title: Porting Natural Language Interfaces between Domains -- An Experimental User Study with the ORAKEL Syste
year: 2007

id1362instance
type: InProceedings
type: Publication
author: id98instance
author: id110instance
author: id778instance
booktitle: Proceedings of the 7th International Workshop on Computational Semantics
month: January
title: UDRT-based Semantics Construction for LTAG -- and what it tells us about the role of adjunction in LTAG --
year: 2007

id1363instance
type: InProceedings
type: Publication
author: id2133instance
author: id558instance
author: id621instance
author: id764instance
author: id847instance
author: id848instance
booktitle: Proceedings of the 2nd Workshop on OWL: Experiences and Directions
has project: id71instance
is about: id69instance
is about: id70instance
is about: id79instance
month: November
series: CEUR Workshop Proceedings
title: Developing ontologies in OWL: An observational study
volume: 216
year: 2006

id1365instance
type: InProceedings
type: Publication
address: Hawaii
author: id15instance
author: id2091instance
author: id525instance
booktitle: 2007 IEEE Symposium on Foundations of Computational Intelligence
has project: id59instance
is about: id157instance
is about: id55instance
is about: id84instance
month: April
note: accepted
title: On the Influence of Phenotype Plasticity on Genotype Diversity
year: 2007

id1366instance
type: Article
type: Publication
author: id2146instance
author: id856instance
author: id857instance
journal: Fundamenta Informaticae
month: July
number: 4
pages: 357-378
title: Incidence calculus on Lukasiewicz's three-valued logic
volume: 68
year: 2005

id1367instance
type: InProceedings
type: Publication
author: id2146instance
author: id830instance
author: id831instance
booktitle: Proceedings of 21th National Conference on Artificial Intelligence (AAAI'06)
month: July
number: 348-356
title: Merging stratified knowledge bases under constraints
year: 2006

id1368instance
type: InProceedings
type: Publication
author: id2146instance
author: id830instance
author: id831instance
booktitle: Proceedings of 10th European Conference on Logics in Artificial Intelligence (JELIA'06)
month: September
number: 386-398
title: Knowledge base revision in Description Logics
year: 2006

id1369instance
type: InProceedings
type: Publication
author: id2146instance
author: id830instance
author: id831instance
booktitle: Proceedings of 11th International workshop on Non-Monotonic Reasoning (NMR06)
month: June
pages: 124-132
title: A revision-based approach to handling inconsistency in description logics
year: 2006

id136instance
type: InProceedings
type: Publication
abstract: In dieser Arbeit wird ein ontologiebasiertes Wissensmanagementsystem vorge-stellt. Die Verwendung von Ontologien ermöglicht einen intuitiven Zugriff auf Informationen und die Integration von Informationen aus verschiedenen Daten-quellen. Dabei wird hier ein Schwerpunkt auf die Ontologieentwicklung für einen Unternehmensanalysten gelegt und ein Portal vorgestellt welches die verschiede-nen Arbeitskontexte des Anlysten berücksichtig und daraus abgeleitete spezifische Informationen zur Verfügung stellt. Es werden verschiedene Techniken presen-tiert, wie die Inhalte aus vorhandenen Dokumenten und Datenbanken in das Wis-sensmanagementsystem integriet werden können.
author: id57instance
author: id6instance
author: id83instance
booktitle: Wirtschaftsinformatik 2003, Medien - Märkte - Mobilität, Band II
is about: id102instance
is about: id19instance
is about: id52instance
is about: id79instance
pages: 373-392
title: TIME2Research - Ein Wissenportal für den Unternehmensanalysten
year: 2003

id1370instance
type: InProceedings
type: Publication
author: id2146instance
author: id2153instance
author: id830instance
author: id831instance
booktitle: Proceedings of First International Conference on Knowledge Science, Engineering and Management
pages: 176-189
title: LCS: A linguistic combination system for ontology mathing
year: 2006

id1371instance
type: InProceedings
type: Publication
author: id2146instance
author: id830instance
author: id831instance
booktitle: Proceedings of First International Conference on Knowledge Science, Engineering and Management
pages: 341-353
title: Quota-Based Merging Operators for Stratified Knowledge Bases
year: 2006

id1372instance
type: InProceedings
type: Publication
author: id2146instance
author: id830instance
author: id831instance
booktitle: Proceedings of International Joint Conference on Artificial Intelligence ( IJCAI'05)
month: July
pages: 552-558
title: Measuring conflict and agreement between prioritized knowledge bases
year: 2005

id1373instance
type: InProceedings
type: Publication
author: id2146instance
author: id830instance
author: id831instance
booktitle: Proceedings of International Conference on Uncertainty in Artificial Intelligence (UAI'05)
month: July
pages: 477-484
title: A revision-baed approach to resolving conflicting information
year: 2005

id1374instance
type: InProceedings
type: Publication
author: id2146instance
author: id830instance
author: id831instance
booktitle: Proceedings of eighth European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU05)
pages: 501-513
title: Combining multiple knowledge bases by negotiation: A possibilistic approach
year: 2005

id1375instance
type: InProceedings
type: Publication
author: id2146instance
author: id830instance
author: id831instance
booktitle: Proceedings of eighth European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU05)
pages: 465-476
title: Multiple Semi-revision in Possibilistic Logic
year: 2005

id1376instance
type: InProceedings
type: Publication
author: id2146instance
author: id830instance
author: id832instance
booktitle: Proceedings of 9th International Conference on Principles of Knowledge Representation and Reasoning (KR 2004)
month: June
pages: 348-356
title: A split-combination method for merging inconsistent knowledge bases in the framework of possibilistic logic
year: 2004

id1377instance
type: InProceedings
type: Publication
address: Whistler, Canada
author: id2146instance
author: id830instance
author: id832instance
booktitle: Proceedings of 10th International workshop on Non-Monotonic Reasoning (NMR04)
pages: 342-350
title: Combining individually inconsistent prioritized knowledge bases
year: 2004

id1378instance
type: InProceedings
type: Publication
author: id2146instance
booktitle: Proc. of 9th International Conference on Rough Sets, Fuzzy Sets, Data Mining, and Granular Computing (RSFDGrc'03)
month: October
pages: 690-693
title: Probabilistic inference on three- valued logic
year: 2003

id137instance
type: InProceedings
type: Publication
abstract: This paper discusses issues that surround the provision of application support using OWL ontologies. It presents the OWL API, a high-level programmatic interface for accessing and manipulating OWL ontologies. We discuss the underlying design issues and illustrate possible solutions to technical issues occurring in systems that intend to support the OWL standard. Although the context of our solutions is that of a particular implementation, the issues discussed are largely independent of this and should be of interest to a wider community.
author: id40instance
author: id97instance
author: id98instance
booktitle: Proc. of the First International Semantic Web Conference 2003 (ISWC 2003), October 21-23, 2003, Sanibel Island, Florida
has project: id28instance
is about: id79instance
is about: id80instance
pages: 659-675
title: Cooking the Semantic Web with the OWL API
year: 2003

id1380instance
type: Misc
type: Publication
author: id2139instance
howpublished: Dissertation
is about: id102instance
is about: id36instance
is about: id53instance
month: December
title: Relational Exploration - Combining Description Logics and Formal Concept Analysis for Knowledge Specification
year: 2006

id1381instance
type: InProceedings
type: Publication
author: id2146instance
author: id831instance
author: id858instance
author: id859instance
booktitle: Proceedings of IEEE International Conference on Systems, Man, and Cybernetics
month: October
pages: 2796-2801
title: Knowledge Representation and Learning Mechanism Based on Networks of Spiking Neurons
year: 2006

id1382instance
type: InProceedings
type: Publication
author: id155instance
author: id831instance
author: id858instance
author: id860instance
author: id861instance
author: id862instance
booktitle: Proceedings of Third International Conference Fuzzy Systems and Knowledge Discovery (FSKD 2006)
month: September
pages: 674-683
title: Improvement of Decision Accuracy Using Discretization of Continuous Attributes
year: 2006

id1383instance
type: Publication
type: TechnicalReport
abstract: While the stable model semantics, in the form of Answer Set Programming, has become a successful semantics for disjunctive logic programs, a corresponding satisfactory extension of the well-founded semantics to disjunctive programs remains to be found. The many current proposals for such an extension are so diverse, that even a systematic comparison between them is a challenging task. This is mainly caused by the completely different mechanisms applied in the approaches. In order to aid the quest for suitable disjunctive well-founded semantics, we present a systematic approach to a comparison based on level mappings, a recently introduced framework for characterizing logic programming semantics, which was quite successfully used for comparing the major semantics for normal logic programs. We extend this framework to disjunctive logic programs and present alternative characterizations for the strong well-founded semantics (SWFS), the generalized disjunctive wellfounded semantics (GDWFS), and the disjunctive well-founded semantics (D-WFS). This will allow us to gain comparative insights into their different handling of negation.
author: id2084instance
author: id659instance
has project: id70instance
is about: id129instance
is about: id130instance
month: December
title: A Comparison of Disjunctive Well-founded Semantics
year: 2006

id138instance
type: InProceedings
type: Publication
abstract: The Semantic Web aims at easy integration and usage of content by building on a semi-structured data model where data semantics are explicitly specified through ontologies. The use of ontologies in real-world applications such as community portals has shown that a new level of data independence is required for ontology-based applications for example to allow the customization of information towards the needs of other agents. This requires control over the republishing of data and requires transformation of data across source databases. We address this issue and introduce external ontologies which are constituted of source data from several databases and views spanning across databases.
author: id40instance
booktitle: Proc. of the 20th British National Conference on Databases (BNCOD), Coventry, UK, July 2003
has project: id28instance
is about: id105instance
is about: id16instance
is about: id17instance
is about: id79instance
is about: id80instance
pages: 67-74
title: External Ontologies in the Semantic Web
volume: 2712
year: 2003

id13instance
type: Book
type: Publication
abstract: Proc. TC 12 Stream on Intelligent Information Processing, IFIP 17th World Computer Congress, Montreal, August 2002
author: id57instance
author: id10instance
author: id11instance
is about: id55instance
isbn: 1-4020-7171
title: Intelligent Information Processing
year: 2002

id140instance
type: InProceedings
type: Publication
abstract: We present a novel approach of extracting a domain ontology from large-scale thesauri. Concepts are identified to be relevant for a domain based on their frequent occurrence in domain texts. The approach allows to bootstrap the ontology engineering process from given legacy thesauri and identifies an initial domain ontology that may easily be refined by experts in a later stage. We present a thorough evaluation of the results obtained in building a biosecurity ontology for the UN FAO AOS project.
author: id40instance
author: id50instance
author: id57instance
author: id99instance
booktitle: Proc. of I-KNOW '03 - 3rd International Conference on Knowledge Management, July 2-4, Graz, Austria
has project: id28instance
is about: id70instance
title: Pruning-based identification of a domain in ontologies
year: 2003

id142instance
type: InProceedings
type: Publication
abstract: The success of the Semantic Web crucially depends on the easy creation, integration and use of semantic data. For this purpose, we consider an integration scenario that defies core assumptions of current metadata construction methods. We describe a framework of metadata creation when web pages are generated from a database and the database owner is cooperatively participating in the Semantic Web. This leads us to the definition of ontology mapping rules by manual semantic annotation and the usage of the mapping rules and of web services for semantic queries. In order to create metadata, the framework combines the presention layer with the data description layer --- in contrast to ``conventional'' annotation, which remains at the presentation layer. Therefore, we refer to the framework by deep annotation We consider deep annotation as particularly valid because, (i), web pages generated from databases outnumber static web pages, (ii), annotation of web pages may be a very intuitive way to create semantic data from a database and, (iii), data from databases should not be materialized as RDF files, they should remain where they can be handled most efficiently --- in their databases.
author: id13instance
author: id40instance
author: id6instance
booktitle: Proc. of the WWW-2003, Budapest, Hungary, May 2003
has project: id23instance
is about: id81instance
pages: 431-438
title: On Deep Annotation
year: 2003

id143instance
type: InProceedings
type: Publication
abstract: Description logic is expected to play a key role in ontology modeling for the Semantic Web. However, logic programming paradigm has been researched extensively in the past and has a large user community, so interoperability between these two formalisms is a desirable and an important issue. In this paper we extend our existing work on translation of description logics ontologies to logic programs. In particular we handle additional expressive primitives, such as existentials, equality, functional properties and nominals. We show how to apply our approach for answering queries over DL ontologies. Finally, we empirically analyse the benefits of our approach in practise by comparing the performance of query answering using state-of-the-art description logics systems and using our translation in conjunction with available logic programming systems.
author: id11instance
author: id40instance
author: id100instance
author: id61instance
booktitle: Proc. of WWW 2003, Budapest, Hungary, May 2003
has project: id28instance
is about: id16instance
is about: id17instance
is about: id79instance
is about: id80instance
pages: 48-57
title: Description Logic Programs: Combining Logic Programs with Description Logics
year: 2003

id145instance
type: Article
type: Publication
author: id14instance
author: id40instance
author: id57instance
author: id8instance
has project: id28instance
is about: id79instance
journal: KI Heft, Special Issue on the Semantic Web
number: 3
pages: 5-9
title: Semantic Web - State of the art and future directions
year: 2003

id146instance
type: InProceedings
type: Publication
abstract: The paper describes the discourse analysis component of the GenIE system. It presents a DRT-based approach which given a suitable ontology is able to infer discourse relations between events mentioned in the text.
author: id98instance
booktitle: Proc. of the 8th International Conference on Natural Language for Information Systems (NLDB'03), Vetschau (Cottbus),Germany
has project: id35instance
is about: id49instance
pages: 77-90
title: Ontology-based Discourse Analysis in GenIE
year: 2003

id147instance
type: InProceedings
type: Publication
abstract: The paper shows how conventional annotation schemes can be formalized as ontologies and discusses the annotation of anaphoric relations in texts as a potential application example.
author: id13instance
author: id98instance
booktitle: Proc. of the ACL Workshop on Linguistic Annotation, Sapporo, Japan
has project: id35instance
is about: id81instance
pages: 14-21
title: Ontology-based Linguistic Annotation
year: 2003

id148instance
type: InProceedings
type: Publication
abstract: RDF-based P2P networks have a number of advantages compared to simpler P2P networks such as Napster, Gnutella or to approaches based on distributed indices on binary keys such as CAN and CHORD. RDF-based P2P networks allow complex and extendable descriptions of resources instead of fixed and limited ones, and they provide complex query facilities against these metadata instead of simple keyword-based searches. In this paper we will discuss RDF-based P2P networks like Edutella as a specific example of a new type of P2P networks - schema-based P2P networks - and describe the use of super-peer based topologies for these networks. Super-peer based networks can provide better scalability than broadcast based networks, and provide support for inhomogeneous schema-based networks, with different metadata schemas and ontologies (crucial for the Semantic Web). Based on (dynamic) metadata routing indices, stated in RDF, the super-peer network supports sophisticated routing and distribution strategies, as well as preparing the ground for advanced mediation and clustering functionalities.
author: id76instance
author: id103instance
author: id104instance
author: id105instance
author: id106instance
author: id12instance
author: id13instance
booktitle: Proc. 12th International World Wide Web Conference. Budapest, 20.-24.5.2003
has project: id27instance
is about: id102instance
is about: id20instance
is about: id79instance
pages: 536-543
title: Super-peer-based routing and clustering strategies for RDF-based peer-to-peer networks
year: 2003

id149instance
type: InCollection
type: Publication
author: id2042instance
booktitle: Kundenmanagement im Mittelstand – Systematischer Erfolg durch zufriedene Kunden
edition: 1. Auflage
is about: id109instance
pages: 67 - 82
title: Motivation: Was ist CRM und was kann CRM leisten?
year: 2002

id14instance
type: InProceedings
type: Publication
abstract: The Semantic Web is intended to enable machine understandable web content and seems to be a solution for many drawbacks of the current Web. It is based on metadata that formally describe the semantics of Web contents. In this paper we present an integrated and semi-automatic approach for generating shared-understandable metadata for data-intensive Web applications. This approach is based on mapping a given relational schema into an already existing ontology structure using a reverse engineering process. As a case study we present this style of a schema- and data-migration for our Institute web portal. The presented approach can be applied to a broad range of today's data-intensive Web sites.
author: id32instance
author: id40instance
author: id53instance
booktitle: Intelligent Information Processing, IFIP 17th World Computer Congress - TC12 Stream on Intelligent Information Processing, August 25-30, 2002, Montréal, Québec, Canada
has project: id4instance
is about: id16instance
is about: id53instance
is about: id70instance
is about: id79instance
pages: 141-154
series: IFIP Conference Proceedings
title: A reverse engineering approach for migrating data-intensive web sites to the Semantic Web
volume: 221
year: 2002

id150instance
type: InCollection
type: Publication
address: Braunschweig/Wiesbaden
author: id2024instance
author: id2042instance
booktitle: CRM-Systeme mit EAI – Konzeption, Implementierung und Evaluation.
edition: 1. Auflage
is about: id109instance
pages: 159 - 182
title: Erfahrungen bei der Implementierung eines eCRM-Systems bei einem Internetspieleanbieter
year: 2002

id151instance
type: InProceedings
type: Publication
author: id90instance
booktitle: Proceedings of FGML Workshop. Special Interest Group of German Information Society (FGML - Fachgruppe Maschinelles Lernen der GI e.V.)
has project: id10instance
has project: id32instance
is about: id15instance
is about: id51instance
title: ILP-basierte Klassifikation von Web-Dokumenten
year: 2003

id152instance
type: InProceedings
type: Publication
author: id32instance
author: id88instance
author: id90instance
booktitle: Proceedings of FGML Workshop. Special Interest Group of German Information Society (FGML - Fachgruppe Maschinelles Lernen der GI e.V.)
has project: id32instance
is about: id100instance
is about: id15instance
is about: id52instance
is about: id53instance
title: OntoManager - a system for usage-based ontology management
year: 2003

id153instance
type: InProceedings
type: Publication
abstract: We present a scalable and reliable framework for Semantic Portals which is an extension of our existing SEAL approach. We illustrate the instantiation of our framework by the real-world example of a heterogeneous and distributed infrastructure of Semantic Portals, viz. the portal of our institute AIFB, the OntoWeb.org portals and the KM-Vision.org portal. The approach relies on the application of current semantic technologies whereby we still keep practical usability. Generally, we show that our approach can be used to build up Semantic Portals from scratch or to build up on existing portal infrastructures as a layered Semantic Portal on top. We present several modi for integration of multiple portals and show how we address practical issues like scalability and robustness of Semantic Portals.
author: id20instance
author: id90instance
booktitle: Proceedings of the International Conference on Ontologies, Databases and Applications of SEmantics (ODBASE 2003), 3-7 November 2003, Catania, Sicily (Italy)
has project: id10instance
has project: id58instance
pages: 725-738
title: Scalable and Reliable Semantic Portals (SEAL) in Practice
volume: 2888
year: 2003

id154instance
type: InProceedings
type: Publication
abstract: The Paper addresses the problem of bridging reference resolution. A DRT- based approach combining Semantic Web ontologies as well as model builder is proposed.
author: id98instance
booktitle: Proceedings of the Fourth International Workshop on Inference in Computational Semantics (ICoS-4), Nancy, France
has project: id35instance
is about: id93instance
pages: 57-71
title: Building Models for Bridges
year: 2003

id155instance
type: InProceedings
type: Publication
abstract: The paper presents a novel approach based on FCA to derive a conceptual hierarchy or taxonomy from text.
author: id51instance
author: id6instance
author: id98instance
booktitle: Proceedings of the ECML/PKDD Workshop on Adaptive Text Extraction and Mining, Cavtat-Dubrovnik, Croatia
has project: id35instance
is about: id93instance
pages: 10-17
title: Automatic Acquisition of Taxonomies from Text: FCA meets NLP
year: 2003

id156instance
type: InProceedings
type: Publication
abstract: The paper extend a previous approach to learning concept hierarchies by FCA by smoothing techniques.
author: id51instance
author: id6instance
author: id98instance
booktitle: Proceedings of the GI Workshop "Lehren - Lernen - Wissen - Adaptivität" (LLWA), Fachgruppe Maschinelles Lernen, Wissenentdeckung, Data Mining, Karlsruhe, Germany
has project: id35instance
is about: id93instance
pages: 72-79
title: Deriving Concept Hierarchies from Text by Smooth Formal Concept Analysis
year: 2003

id157instance
type: Book
type: Publication
author: id28instance
author: id2instance
author: id108instance
author: id109instance
is about: id67instance
title: Grundkurs Programmieren in Java, Bd. 2: Programmierung kommerzieller Systeme
year: 2003

id158instance
type: InProceedings
type: Publication
abstract: In this paper we extend Musken's Logical Description Grammar (LDG) approach such that ambiguity may in addition to the mutual syntactic and semantic constraints LDG provides be restricted by (i) lexical semantic information and (ii) an underlying ontology associated with the lexical items. In this paper we apply our approach to the underspecification and resolution of lexical ambiguities.
author: id98instance
author: id110instance
booktitle: Proceedings of the Lorraine/Saarland Workshop on Prospects and Recent Advances in the Syntax-Semantics Interface, October 20-21, 2003, Nancy, France
has project: id35instance
is about: id110instance
pages: 33-38
title: Ontology-based semantic construction underspecification and disambiguation
year: 2003

id159instance
type: InProceedings
type: Publication
author: id28instance
author: id38instance
author: id44instance
booktitle: Proceedings des Symposiums "Entwicklung Web-Service-basierter Anwendungen" im Rahmen der "Informatik 2003 - Innovative Informatikanwendungen", GI-Jahrestagung, Frankfurt
is about: id106instance
is about: id16instance
month: October
title: Modell eines Workflow-Systems zur Erhöhung der Sicherheit von Web Services
year: 2003

id15instance
type: InProceedings
type: Publication
abstract: Metadata for the World Wide Web is important, but metadata for Peer-to-Peer (P2P) networks is absolutely crucial. In this paper we discuss the open source project Edutella which builds upon metadata standards defined for the WWW and aims to provide an RDF-based metadata infrastructure for P2P applications, building on the recently announced JXTA Framework. We describe the goals and main services this infrastructure will provide and the architecture to connect Edutella Peers based on exchange of RDF metadata. As the query service is one of the core services of Edutella, upon which other services are built, we specify in detail the Edutella Common Data Model (ECDM) as basis for the Edutella query exchange language and format implementing distributed queries over the Edutella network. Finally, we shortly discuss registration and mediation services, and introduce the prototype and application scenario for our current Edutella aware peers.
author: id51instance
author: id6instance
author: id12instance
author: id14instance
booktitle: Semantic Web Workshop, WWW02 Conference, Hawai, USA
has project: id27instance
has project: id4instance
is about: id100instance
is about: id52instance
is about: id53instance
is about: id80instance
is about: id81instance
is about: id90instance
title: EDUTELLA: Searching and Annotating Resources within an RDF-based P2P Network
year: 2002

id160instance
type: InProceedings
type: Publication
abstract: Topics in education are changing with an ever faster pace. E-Learning resources tend to be more and more decentralised. Users need increasingly to be able to use the resources of the web. For this, they should have tools for finding and organizing information in a decentral way. In this, paper, we show how an ontology-based tool suite allows to make the most of the resources available on the web.
author: id51instance
author: id57instance
author: id6instance
author: id76instance
author: id8instance
booktitle: Fachtagung Mobiles Lernen und Forschen, 6.11.2003, Universität Kassel
has project: id27instance
is about: id20instance
title: The Courseware Watchdog: an Ontology-based tool for finding and organizing learning material
year: 2003

id161instance
type: Proceedings
type: Publication
editor: id20instance
editor: id111instance
has project: id10instance
is about: id102instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
note: Workshop at the 2nd International Semantic Web Conference (ISWC 2003), 20-23 October 2003, Sundial Resort, Sanibel Island, Florida, USA
title: 2nd International Workshop on Evaluation of Ontology based Tools (EON2003)
volume: 87
year: 2003

id162instance
type: Proceedings
type: Publication
editor: id20instance
editor: id112instance
editor: id113instance
editor: id114instance
editor: id115instance
editor: id84instance
is about: id68instance
is about: id70instance
is about: id79instance
note: Workshop at the 18th International Joint Conference on Artificial Intelligence (IJCAI-03), 9-15 August 2003, Acapulco Convention Center, Acapulco, Mex
title: 1st International Workshop on Ontologies and Distributed Systems (ODS2003)
volume: 71
year: 2003

id163instance
type: Proceedings
type: Publication
abstract: Professional knowledge management is a critical success factor in today's enterprises. The efficacy of a knowledge management (KM) project depends heavily on a successful coordination of issues such as corporate culture, organizational processes, human resource management and information technology. It is currently not well understood how best to balance and align these issues. In order to facilitate an interdisciplinary exchange of ideas which might lead to new, holistic approaches, the biennial conference series "Professional Knowledge Management - Experiences and Visions" was set up and held for the first time in March 2001 in Baden-Baden, Germany. The second conference took place April 2003 in Luzern, Switzerland. Some of the most interesting papers from the recent conference have been revised and extended by their authors to appear in this special issue of J.UCS.
editor: id20instance
editor: id95instance
has project: id10instance
is about: id102instance
note: pp. 579-728
series: J.UCS Special Issue
title: Professional Knowledge Management - Experiences and Visions
volume: 9
year: 2003

id164instance
type: Proceedings
type: Publication
editor: id20instance
editor: id60instance
has project: id10instance
is about: id102instance
is about: id69instance
note: Workshop at the 2nd National Conference 'Professionelles Wissensmanagement - Erfahrungen und Visionen' (WM2003), Luzern, Switzerland, April 2nd-4th
title: 1st National Workshop Ontologie-basiertes Wissensmanagement (WOW2003)
volume: 68
year: 2003

id166instance
type: InProceedings
type: Publication
abstract: An ontology-based knowledge sharing system OntoShare and its evaluation as part of a case study is described. RDF(S) is are used to specify and populate an ontology, based on information shared between users in virtual communities. We begin by discussing the advantages that use of Semantic Web technology afford in the area of knowledge management tools. The way in which OntoShare supports WWW-based communities of practice is described. Usage of OntoShare semi-automatically builds an RDF-annotated information resource for the community (and potentially for others also). Observing that in practice the meanings of and relationships between concepts evolve over time, OntoShare supports a degree of ontology evolution based on usage of the system ? that is, based on the kinds of information users are sharing and the concepts (ontological classes) to which they assign this information. A case study involving OntoShare was carried out. The evaluation exercise for this case study and its results are described. We conclude by describing avenues of ongoing and future research.
author: id20instance
author: id130instance
author: id6instance
booktitle: Proceedings of the 2nd International Conference on Knowledge Capture (K-CAP2003), 23-26 October 2003, Florida, USA
has project: id11instance
is about: id102instance
is about: id103instance
is about: id104instance
pages: 20-27
title: OntoShare - A Knowledge Management Environment for Virtual Communities of Practice.
year: 2003

id167instance
type: InProceedings
type: Publication
abstract: Information integration is still one of today's hottest IT topics. Neither merging the information from different data sources nor preparing it for the end user's access has been completely solved. The goal of this paper is to present a holistic approach to integration by using ontologies and logic. There are several reasons for an ontology-based approach: Ontologies are able to cover all occurring data structures, for ontologies can be seen as nowadays most advanced knowledge representation model. They are able to cover complexity, for the combination with deductive logic extends the mapping and business logic capabilities. As the model is separated from the data storage, we get a higher degree of abstraction, whereby the semantics of the whole system is increased. Ontologies are extendible and highly reusable and deliver the user a better access to his relevant content. In this paper we describe how current capabilities of knowledge representation, mapping of structures and description of the business logic are extended. In an elaborated case study of a specific R&D process in the automobile industry we demonstrate that the complex integration process can be realized much easier, faster, more understandable and less expensive than before, without changing the existing IT legacy environment.
author: id20instance
author: id60instance
author: id117instance
booktitle: Proceedings of the 2nd International Semantic Web Conference (ISWC2003), 20-23 October 2003, Sundial Resort, Sanibel Island, Florida, USA
is about: id102instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
pages: 897-912
series: LNCS
title: Ontology-based Information Integration in the Automotive Industry
volume: 2870
year: 2003

id168instance
type: InProceedings
type: Publication
abstract: An ontology-based knowledge sharing system OntoShare and its evaluation as part of a case study is described. RDF(S) is are used to specify and populate an ontology, based on information shared between users in virtual communities. We begin by discussing the advantages that use of Semantic Web technology afford in the area of knowledge management tools. The way in which OntoShare supports WWW-based communities of practice is described. Usage of OntoShare semi-automatically builds an RDF-annotated information resource for the community (and potentially for others also). Observing that in practice the meanings of and relationships between concepts evolve over time, OntoShare supports a degree of ontology evolution based on usage of the system ? that is, based on the kinds of information users are sharing and the concepts (ontological classes) to which they assign this information. A case study involving OntoShare was carried out. The evaluation exercise and results for this case study are described. We conclude by describing avenues of ongoing and future research.
author: id20instance
author: id130instance
author: id6instance
booktitle: Proceedings of the 3rd International Conference on Knowledge Management (I-Know'03), July 2-4 2003, Graz, Austria
has project: id11instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
pages: 59-65
title: OntoShare - Evaluation of an Ontology-based Knowledge Sharing System
year: 2003

id169instance
type: InCollection
type: Publication
abstract: In this chapter we present the On-To-Knowledge Methodology (OTKM) for introducing and maintaining ontology based knowledge management applications into enterprises with a focus on Knowledge Processes and Knowledge Meta Processes. While the former process circles around the usage of ontologies, the latter process guides their initial set up. We illustrate our methodology by an example from a case study on skills management.
author: id20instance
author: id57instance
author: id6instance
booktitle: Handbook on Ontologies
chapter: 6
has project: id11instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
pages: 117-132
title: On-To-Knowledge Methodology
year: 2003

id16instance
type: InProceedings
type: Publication
abstract: Many RDF repositories have already been implemented with various access languages and mechanisms. The aim of the EDUTELLA framework is to allow communication between different RDF repository implementations. Part of EDUTELLA is a Query Exchange Language (QEL) which can be used as lingua franca to retrieve information from RDF repositories. This work shows why we also need standardization of distributed modification capabilities. We describe use case scenarios for annotation and replication services and use them as guideline for our approach towards a Modification Exchange Language (MEL) for distributed RDF repositories.
author: id51instance
author: id12instance
author: id13instance
author: id15instance
booktitle: Proc. of the First International Semantic Web Conference 2002 (ISWC 2002), June 9-12 2002, Sardinia, Ital
has project: id11instance
has project: id27instance
is about: id70instance
is about: id80instance
pages: 236-249
series: LNCS
title: Towards a Modification Exchange Language for Distributed RDF Repositories
volume: 2342
year: 2002

id170instance
type: InCollection
type: Publication
abstract: In this chapter we describe an ontology-based content management and retrieval system, a kind of Document-based Corporate Memory. This system has been realized in the setting of a virtual organization, a new kind of business partnership at the forefront of ontology-based Knowledge Management due to the special needs for organizing corporate knowledge using flexible, but well-understood and machine processable structures. The goal of our development was to improve on the traditional ways of managing both information items (documents, in our case) and domain knowledge used to organize information, while minimizing the additional effort required from content managers and knowledge workers. This meant the application of automated methods for creating ontologies, even if such methods produce a quality that falls short of the results attainable by manual methods. Our approach also required us to put an emphasis on intelligent interfaces that help the user to effectively discover and query the domain while hiding the complexity of ontologies and ontology-based queries.
author: id20instance
author: id125instance
author: id19instance
author: id399instance
booktitle: Handbook on Ontologies
chapter: 23
has project: id11instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id98instance
pages: 455-476
title: Ontology-based Content Management in a Virtual Organization
year: 2003

id173instance
type: InCollection
type: Publication
author: id20instance
booktitle: The Ontology and Modelling of Real Estate Transactions
has project: id11instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
pages: 115-126
title: A Tool-supported Methodology for Ontology-based Knowledge Management
year: 2003

id174instance
type: InCollection
type: Publication
author: id20instance
author: id32instance
author: id50instance
author: id57instance
author: id6instance
booktitle: Spinning the Semantic Web
has project: id10instance
is about: id102instance
is about: id52instance
is about: id79instance
pages: 317-359
title: SEmantic portAL - The SEAL approach
year: 2003

id17instance
type: InProceedings
type: Publication
abstract: Text Mining is about discovering novel, interesting and useful patterns from textual data. In this paper we discuss several means that introduce background knowledge into unsupervised text mining in order to improve the novelty, the interestingness or the usefulness of the detected patterns. Germane to the different proposals is that they strive for higher abstractions that carry more explanatory power and more possibilities for exploring the input texts than is achievable by unknowledgeable means.
author: id14instance
author: id50instance
author: id6instance
author: id16instance
booktitle: Proc of Text Mining Workshop
is about: id93instance
title: On Knowledgeable Unsupervised Text Mining
year: 2002

id18instance
type: InProceedings
type: Publication
abstract: Semantic Web Mining aims at combining the two fast-developing research areas Semantic Web and Web Mining.The idea is to improve,on the one hand,the results of Web Mining by exploiting the new semantic structures in the Web;and to make use of Web Mining,on the other hand,for building up the Semantic Web.This paper gives an overview of where the two areas meet today,and sketches ways of how a closer integration could be pro ?table.
author: id14instance
author: id8instance
author: id17instance
booktitle: The Semantic Web - ISWC 2002, First International Semantic Web Conference
has project: id11instance
has project: id21instance
has project: id9instance
is about: id15instance
is about: id16instance
is about: id69instance
is about: id70instance
is about: id71instance
is about: id79instance
is about: id93instance
is about: id9instance
pages: 264-278
series: Lecture Notes in Computer Science
title: Towards Semantic Web Mining
volume: 2342
year: 2002

id19instance
type: Article
type: Publication
abstract: Text clustering typically involves clustering in a high dimensional space, which appears difficult with regard to virtually all practical settings. In addition, given a particular clustering result it is typically very hard to come up with a good explanation of why the text clusters have been constructed the way they are. In this paper, we propose a new approach for applying background knowledge during preprocessing in order to improve clustering results and allow for selection between results. We preprocess our input data applying an ontology-based heuristics for feature selection and feature aggregation. Thus, we construct a number of alternative text representations. Based on these representations, we compute multiple clustering results using K-Means. The results may be distinguished and explained by the corresponding selection of concepts in the ontology. Our results compare favourably with a sophisticated baseline preprocessing strategy.
author: id14instance
author: id50instance
author: id6instance
is about: id102instance
is about: id93instance
journal: Künstliche Intelligenz (KI)
number: 4
pages: 48-54
title: Text Clustering Based on Good Aggregations
volume: 16
year: 2002

id1instance
type: Article
type: Publication
author: id40instance
author: id50instance
author: id53instance
author: id57instance
author: id5instance
has project: id13instance
has project: id9instance
is about: id21instance
is about: id69instance
is about: id70instance
journal: IEEE Intelligent Systems
month: November
title: Ontologies for Enterprise Knowledge Management
year: 2002

id203instance
type: InProceedings
type: Publication
abstract: Ontologies as means for conceptualizing and structuring domain knowledge within a community of interest are seen as a key to realize the Semantic Web vision. However, the decentralized nature of the Web makes achieving this consensus across communities difficult, thus, hampering efficient knowledge sharing between them. In order to balance the autonomy of each community with the need for interoperability, mapping mechanisms between distributed ontologies in the Semantic Web are required. In this paper we present MAFRA, an interactive, incremental and dynamic framework for mapping distributed ontologies.
address: Siquenca, Spain
author: id40instance
author: id50instance
author: id24instance
author: id5instance
booktitle: Proc. of 13th European Conference on Knowledge Engineering and Knowledge Management (EKAW)
title: MAFRA - A Mapping Framework for Distributed Ontologies
year: 2002

id204instance
type: Article
type: Publication
author: id40instance
author: id57instance
author: id6instance
author: id79instance
has project: id28instance
journal: ACM Transactions on Internet Technology (TOIT)
month: May
number: 2
pages: 359-389
title: Supporting Application Development in the Semantic Web
volume: 5
year: 2005

id205instance
type: InProceedings
type: Publication
author: id40instance
author: id79instance
author: id126instance
author: id82instance
booktitle: On The Move to Meaningful Internet Systems 2003: OTM 2003Workshops
has project: id26instance
has project: id28instance
month: October
pages: 28-29
series: Lecture Notes in Computer Science
title: An ontology for semantic middleware: extending DAML-S beyond web-services
volume: 2889
year: 2003

id206instance
type: InCollection
type: Publication
author: id79instance
author: id26instance
booktitle: Handbook on Ontologies
chapter: IV
has project: id10instance
pages: 499-517
title: The Knowledge Portal OntoWeb
year: 2004

id207instance
type: InCollection
type: Publication
author: id40instance
author: id6instance
author: id79instance
author: id5instance
booktitle: Handbook on Ontologies
chapter: III
has project: id26instance
has project: id28instance
pages: 311-333
title: An extensible ontology software environment
year: 2004

id208instance
type: InProceedings
type: Publication
author: id40instance
author: id57instance
author: id79instance
booktitle: Proceedings of the Seventh International Database Engineering and Applications Symposium (IDEAS'03), July 16 - 18, 2003, Hong Kong, SAR
pages: 160-170
title: Implementing Views for Light-Weight Web Ontologies
year: 2003

id209instance
type: InProceedings
type: Publication
author: id40instance
author: id6instance
author: id79instance
author: id5instance
booktitle: Alternate Track Proceedings of the Twelfth International World Wide Web Conference, WWW2003, Budapest, Hungary, 20-24 May 2003
has project: id26instance
has project: id28instance
title: KAON SERVER - A Semantic Web Management System
year: 2003

id20instance
type: InProceedings
type: Publication
abstract: Common clustering techniques have the disadvantage that they do not provide intensional descriptions of the clusters obtained. Conceptual Clustering techniques, on the other hand, provide such descriptions, but are known to be rather slow. In this paper, we discuss a way of combining both techniques. We first cluster the documents by avariant of k {Means, using a thesaurus as background knowledge. This clustering reduces the large number of documents to a relatively small number of clusters, which can then be clustered conceptually in the second step.
author: id14instance
author: id8instance
booktitle: Proc. Fachgruppentreffen Maschinelles Lernen (FGML 2002), 7.-9.10.2002, Hannover
is about: id102instance
is about: id36instance
is about: id93instance
pages: 37-45
title: Conceptual Clustering of Text Clusters
year: 2002

id211instance
type: InProceedings
type: Publication
author: id40instance
author: id57instance
author: id6instance
author: id79instance
booktitle: Proceedings of the 2003 ACM Symposium on Applied Computing (SAC), March 9-12, 2003, Melbourne, FL, USA
pages: 1168-1173
title: Views for Light-weight Web Ontologies
year: 2003

id212instance
type: Misc
type: Publication
author: id40instance
author: id57instance
author: id6instance
author: id79instance
has project: id26instance
has project: id28instance
howpublished: WonderWeb Deliverable D11
note: http://wonderweb.semanticweb.org
title: OntoLiFT Prototype
year: 2003

id213instance
type: Misc
type: Publication
author: id40instance
author: id57instance
author: id6instance
author: id79instance
has project: id26instance
has project: id28instance
howpublished: WonderWeb Deliverable D9
note: http://wonderweb.semanticweb.org
title: OntoBroker and OntoEdit Adaptation
year: 2003

id214instance
type: Misc
type: Publication
author: id40instance
author: id57instance
author: id6instance
author: id79instance
has project: id26instance
has project: id28instance
howpublished: WonderWeb Deliverable D8
note: http://wonderweb.semanticweb.org
title: Triple Client
year: 2003

id215instance
type: Misc
type: Publication
author: id40instance
author: id6instance
author: id79instance
author: id5instance
has project: id26instance
has project: id28instance
howpublished: WonderWeb Deliverable D6
note: http://wonderweb.semanticweb.org
title: KAON SERVER Prototype
year: 2003

id216instance
type: Publication
type: TechnicalReport
author: id79instance
author: id122instance
author: id125instance
author: id82instance
has project: id26instance
has project: id28instance
title: An Ontology of Services and Service Descriptions
year: 2003

id217instance
type: InProceedings
type: Publication
author: id20instance
author: id40instance
author: id57instance
author: id79instance
author: id26instance
author: id27instance
author: id28instance
author: id29instance
booktitle: Practical Aspects of Knowledge Management, 4th International Conference, PAKM 2002, Vienna, Austria, December 2-3, 2002, Proceedings
pages: 189-200
series: Lecture Notes in Computer Science
title: OntoWeb - A Semantic Web Community Portal
volume: 2569
year: 2002

id218instance
type: InProceedings
type: Publication
abstract: The Semantic Web will bring structure to the content of Web pages, being an extension of the currentWeb, in which information is given a well-defined meaning. Especially within e-commerce applications, SemanticWeb technologies in the form of ontologies and metadata are becoming increasingly prevalent and important. This paper introduce KAON - the Karlsruhe Ontology and Semantic WebTool Suite.KAONis developed jointly within several EU-funded projects and specifically designed to provide the ontology and metadata infrastructure needed for building, using and accessing semantics-driven applications on the Web and on your desktop.
author: id13instance
author: id14instance
author: id20instance
author: id32instance
author: id40instance
author: id50instance
author: id51instance
author: id53instance
author: id57instance
author: id6instance
author: id76instance
author: id79instance
author: id80instance
author: id8instance
author: id124instance
author: id16instance
author: id5instance
booktitle: E-Commerce and Web Technologies, Third International Conference, EC-Web 2002, Aix-en-Provence, France, September 2-6, 2002, Proceedings
has project: id26instance
is about: id69instance
is about: id70instance
is about: id79instance
is about: id80instance
pages: 304-313
series: LNCS
title: KAON - Towards a large scale Semantic Web
volume: 2455
year: 2002

id219instance
type: InProceedings
type: Publication
author: id40instance
author: id50instance
author: id79instance
booktitle: Proceedings of the ECAI-02 Workshop on Ontologies and Semantic Interoperability Lyon, July 22, 2002
series: CEUR Workshop Proceedings
title: Towards a modularized Semantic Web
volume: 64
year: 2002

id21instance
type: Misc
type: Publication
abstract: How do we measure ontology based search tools? How can we know if they perform better than the traditional methods for finding information on the Internet? We believe that one of the best way to answer this is to carry out a case study including a carefully designed field experiment where the tools are tested. In this paper we discuss the design considerations and set-up of filed experiments with Semantic Web tools, and we also give some result from our own field studies that was carried out within the EU IST-1999-10132 On-To-Knowledge project.
author: id20instance
author: id19instance
has project: id11instance
howpublished: Proceedings of the Common Industry Program at the ODBASE 2002
is about: id79instance
title: Exploring potential Benefits of the Semantic Web for Virtual Organizations
year: 2002

id220instance
type: InProceedings
type: Publication
author: id40instance
author: id57instance
author: id79instance
booktitle: Proceedings of the 2nd International Workshop on Databases, Documents, and Information Fusion (DBFUSION 02), July 4-5, 2002, Karlsruhe, Germany
series: Workshop Proceedings
title: On Views in the Semantic Web
volume: 124
year: 2002

id221instance
type: Misc
type: Publication
author: id40instance
author: id57instance
author: id6instance
author: id79instance
author: id5instance
has project: id26instance
has project: id28instance
howpublished: WonderWeb Deliverable D5
note: http://wonderweb.semanticweb.org
title: KAON SERVER Architecture
year: 2002

id222instance
type: Publication
type: TechnicalReport
author: id79instance
author: id127instance
author: id82instance
has project: id26instance
has project: id28instance
series: 426
title: An ontology for semantic middleware: extending DAML-S beyond web-services
year: 2003

id223instance
type: Publication
type: TechnicalReport
author: id79instance
series: 424
title: Semantic Community Web Portals - Personalization
year: 2003

id224instance
type: Publication
type: TechnicalReport
author: id40instance
author: id79instance
series: 422
title: Implementation of a view mechanism for ontology-based metadata
year: 2002

id225instance
type: Publication
type: TechnicalReport
author: id40instance
author: id57instance
author: id6instance
author: id79instance
author: id5instance
has project: id26instance
has project: id28instance
series: 421
title: KAON Server Architecture
year: 2002

id226instance
type: InCollection
type: Publication
author: id20instance
author: id57instance
author: id67instance
author: id68instance
author: id128instance
author: id129instance
author: id130instance
author: id131instance
author: id132instance
author: id133instance
author: id134instance
author: id135instance
author: id136instance
author: id137instance
author: id19instance
author: id220instance
author: id61instance
author: id6instance
author: id81instance
author: id95instance
booktitle: Web Intelligence
chapter: 13
has project: id11instance
is about: id102instance
is about: id104instance
is about: id68instance
is about: id79instance
pages: 277-300
title: On-To-Knowledge: Semantic Web Enabled Knowledge Management
year: 2003

id227instance
type: InProceedings
type: Publication
author: id13instance
author: id6instance
author: id91instance
booktitle: Second International Semantic Web Conference
month: October
pages: 211-226
series: LNCS
title: Surfing the Service Web
volume: 2870
year: 2003

id228instance
type: InProceedings
type: Publication
author: id14instance
author: id79instance
author: id88instance
author: id17instance
booktitle: Advances in Web Intelligence, First International Atlantic Web Intelligence Conference, AWIC 2003, Madrid, Spain, May 5-6, 2003, Proceedings
pages: 142-154
series: Lecture Notes in Artificial Intelligence
title: Conceptual User Tracking
volume: 2663
year: 2003

id229instance
type: Publication
type: TechnicalReport
author: id1966instance
author: id21instance
author: id38instance
month: October
series: 395
title: Virtuelle Kurse durch Wiederverwendung didaktischer Lehrmodule
year: 1999

id22instance
type: InProceedings
type: Publication
abstract: How do we measure ontology based search tools? How can we know if they perform better than the traditional methods for finding information on the Internet? We believe that one of the best way to answer this is to carry out a case study including a carefully designed field experiment where the tools are tested. In this paper we discuss the design considerations and set-up of filed experiments with Semantic Web tools, and we also give some result from our own field studies that was carried out within the EU IST-1999-10132 On-To-Knowledge project.
author: id20instance
author: id19instance
booktitle: Proceedings of the Common Industry Program at the federated event co-locating the three international conferences: DOA'02: Distributed Objects and Applications; ODBASE'02: Ontologies, Databases and Applied Semantics; CoopIS'02: Cooperative Information Syst
has project: id11instance
is about: id79instance
title: First Results of a Semantic Web Technologies Evaluation
year: 2002

id230instance
type: Publication
type: TechnicalReport
author: id48instance
author: id144instance
month: October
series: 394
title: On Scheduling Cycle Shops: Classification, Complexity and Approximation
year: 1999

id231instance
type: Publication
type: TechnicalReport
author: id15instance
author: id2001instance
month: September
series: 423
title: Theoretical Analysis of Simple Evolution Strategies in Quickly Changing Environments
year: 2002

id232instance
type: Publication
type: TechnicalReport
author: id15instance
author: id2039instance
author: id29instance
author: id37instance
month: June
series: 418
title: Coevolutionary Ant Algorithms for Playing Games
year: 2002

id233instance
type: Publication
type: TechnicalReport
author: id15instance
author: id16instance
author: id29instance
month: May
series: 417
title: A Unified Framework for Metaheuristics
year: 2002

id234instance
type: Publication
type: TechnicalReport
author: id15instance
author: id72instance
month: May
series: 416
title: Faster Convergence by Means of Fitness Estimation
year: 2002

id235instance
type: Publication
type: TechnicalReport
author: id15instance
author: id48instance
author: id145instance
author: id146instance
month: May
series: 414
title: Waiting Strategies for Dynamic Vehicle Routing
year: 2002

id236instance
type: Publication
type: TechnicalReport
author: id31instance
author: id36instance
author: id44instance
month: January
series: 413
title: Introducing Flexibility into a Workflow based Cooperative System using Agents
year: 2002

id237instance
type: Publication
type: TechnicalReport
author: id8instance
author: id147instance
author: id88instance
author: id89instance
author: id90instance
month: January
series: 406
title: Computing Iceberg Concept Lattices with TITANIC
year: 2001

id238instance
type: Publication
type: TechnicalReport
author: id1978instance
author: id61instance
month: January
series: 405
title: Resource Planning for Business Processes
year: 2001

id239instance
type: Publication
type: TechnicalReport
author: id15instance
author: id29instance
author: id148instance
is about: id30instance
is about: id63instance
month: January
series: 398
title: Guiding Multi Objective Evolutionary Algorithms Towards Interesting Regions
year: 2000

id23instance
type: Article
type: Publication
abstract: The On-To-Knowledge project (EU-IST-1999-10132) develops and explores sophisticated methods and tools for Knowledge Management and thereby provides infrastructure for the Semantic Web. Its partners include technology providers who build an ontology based tool environment to support the acquisition, maintenance and access of information, technology users who evaluate and use the tool environment in industrial case studies and a methodology provider who guides and assists during the implementation of the tool environment in the case studies. In this article we will describe briefly the partners and their contributions to the project.
author: id20instance
has project: id11instance
is about: id68instance
is about: id79instance
journal: Künstliche Intelligenz
month: January
pages: 35-37
title: On-To-Knowledge: Ontology based Knowledge Management Tools and their Application
year: 2002

id240instance
type: Publication
type: TechnicalReport
author: id48instance
author: id149instance
month: January
series: 397
title: Combined Super-/Substring and Super-/Subsequence Problems
year: 2000

id241instance
type: Publication
type: TechnicalReport
author: id20instance
author: id40instance
author: id57instance
month: August
series: 420
title: Managing User Focused Access to Distributed Knowledge
year: 2002

id242instance
type: Publication
type: TechnicalReport
author: id1982instance
author: id20instance
author: id34instance
author: id41instance
author: id57instance
author: id6instance
month: August
series: 419
title: OntoEdit: Collaborative Ontology Development for the Semantic Web
year: 2002

id243instance
type: Publication
type: TechnicalReport
author: id37instance
author: id48instance
month: December
series: 412
title: Modelling the Dynamics of Ant Colony Optimization
year: 2001

id244instance
type: Publication
type: TechnicalReport
abstract: # GETESS (German Text Exploitation and Search System) ist der Name eines Projektes mehrerer Partner aus Forschung, Lehre und Industrie, das unterschiedlichste Fachgebiete der Informatik zusammenfuehrt wie Datenbanken, Künstliche Intelligenz und Linguistik. Ziel der Projektes war die Entwicklung eines prototypischen Informationssystems, das Text- (HTML-) Dokumente mit neuen Technologien einsammelt, abspeichert und mittels natürlichsprachlichen Dialogsystems für die Informationsrecherche verfügbar macht. Partner des Projektes neben der Universität Karlsruhe, Institut AIFB, Forschungsgruppe Wissensmanagement waren die GECKO mbH Rostock, der Lehrstuhl Datenbanken und Informationssysteme der Universität Rostock und das DFKI in Saarbrücken.
author: id50instance
author: id57instance
author: id6instance
month: December
series: 411
title: Schlussbericht: Ontologien in GETESS
year: 2001

id245instance
type: Publication
type: TechnicalReport
author: id11instance
author: id34instance
month: May
series: 410
title: Ontology-aware XML-Queries
year: 2001

id246instance
type: Publication
type: TechnicalReport
author: id29instance
author: id37instance
author: id48instance
month: April
series: 409
title: Ant Colony Optimization Techniques for the Resource-Constrained Project Scheduling Problem
year: 2001

id247instance
type: Publication
type: TechnicalReport
author: id50instance
author: id6instance
month: March
series: 408
title: Comparing Ontologies - Similarity Measures and a Comparison Study
year: 2001

id248instance
type: Publication
type: TechnicalReport
author: id11instance
author: id14instance
author: id20instance
author: id34instance
author: id41instance
author: id50instance
author: id57instance
author: id60instance
author: id6instance
month: October
series: 404
title: AI for the Web - Ontology-based Community Web Portals
year: 2000

id249instance
type: Publication
type: TechnicalReport
author: id15instance
author: id1963instance
author: id48instance
author: id150instance
month: September
series: 403
title: Width Restricted Layering of Acyclic Digraphs with Consideration of Dummy Nodes
year: 2000

id24instance
type: InProceedings
type: Publication
abstract: Ontologies now play an important role for many knowledge-intensive applications for which they provide a source of precisely defined terms. The terms are used for concise communication across people and applications. OntoEdit is an ontology editor that has been developed keeping five main objectives in mind: 1. Ease of use. 2. Methodology-guided development of ontologies. 3. Ontology development with help of inferencing. 4. Development of ontology axioms. 5. Extensibility through plug-in structure. This paper is about the first four of these items.
author: id20instance
author: id41instance
author: id6instance
booktitle: Proceedings of the International Conference on Ontologies, Databases and Applications of SEmantics ODBASE 2002, October 28 - November 1, 2002, University of California, Irvine, USA
has project: id11instance
is about: id103instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
pages: 1205-1222
series: LNCS
title: OntoEdit: Guiding Ontology Development by Methodology and Inferencing
volume: 2519
year: 2002

id250instance
type: Publication
type: TechnicalReport
author: id29instance
author: id48instance
author: id151instance
month: July
series: 402
title: Multi Colony Ant Algorithms
year: 2000

id251instance
type: Publication
type: TechnicalReport
abstract: RDF(S) constitutes a newly emerging standard for metadata that is about to turn the World Wide Web into a machine-understandable knowledge base. It is an XML application that allows for the denotation of facts and schemata in a web-compatible format, building on an elaborate object-model for describing concepts and relations. Thus, it might turn up as a natural choice for a widely-useable ontology description language. However, its lack of capabilities for describing the semantics of concepts and relations beyond those provided by inheritance mechanisms makes it a rather weak language for even the most austere knowledge-based system. This paper presents an approach for modeling ontologies in RDF(S) that also considers axioms as objects that are describable in RDF(S). Thus, we provide flexible, extensible, and adequate means for accessing and exchanging axioms in RDF(S). Our approach follows the spirit of the World Wide Web, as we do not assume a global axiom specification language that is too intractable for one purpose and too weak for the next, but rather a methodology that allows (communities of) users to specify what axioms are interesting in their domain.
author: id11instance
author: id34instance
author: id50instance
author: id6instance
month: October
series: 401
title: An Extensible Approach for Modeling Ontologies in RDF(S)
year: 2000

id252instance
type: Publication
type: TechnicalReport
abstract: Non-taxonomic relations between concepts appear as a major building block in common ontology definitions. In fact, their definition consumes much of the time needed for engineering an ontology. We here describe a new approach to discover non-taxonomic conceptual relations from text building on shallow text processing techniques. We use a generalized association rule algorithm that does not only detect relations between concepts, but also determines the \emph{appropriate level of abstraction} at which to define relations. This is crucial for an appropriate ontology definition in order that it be succinct and conceptually adequate and, hence, easy to understand, maintain, and extend. We also perform an empirical evaluation of our approach with regard to a manually engineered ontology. For this purpose, we present a new paradigm suited to evaluate the degree to which relations that are learned match relations in a manually engineered ontology.
author: id50instance
author: id6instance
month: February
series: 400
title: Discovering Conceptual Relations from Text
year: 2000

id253instance
type: Publication
type: TechnicalReport
abstract: This papers presents a new approach for modeling large-scale ontologies. We extend well-established methods for modeling concepts and relations by transportable methods for modeling ontological axioms. The gist of our approach lies in the way we treat the majority of axioms. They are categorized into different types and specified as complex objects that refer to concepts and relations. Considering language and system particularities, this first layer of representation is then translated into the target representation language. This two-layer approach benefits engineering, because the intended meaning of axioms is captured by the categorization of axioms. Classified object representations allow for versatile access to and manipulations of axioms via graphical user interfaces.
author: id50instance
author: id6instance
month: February
series: 399
title: Axioms are Objects, too - Ontology Engineering beyond the Modeling of Concepts and Relations
year: 2000

id254instance
type: Publication
type: TechnicalReport
author: id14instance
author: id6instance
author: id8instance
month: April
series: 425
title: Text Clustering Based on Background Knowledge
year: 2003

id255instance
type: Publication
type: TechnicalReport
author: id1966instance
author: id61instance
month: March
series: 407
title: Quantitative Engineering of Business Processes with VIPbusiness
year: 2001

id256instance
type: TechnicalReport
author: id1962instance
month: December
series: 396
title: Methoden des Reverse-Engineering von Softwarealtsystemen: Eine Übersicht
year: 1999

id257instance
type: TechnicalReport
author: id1962instance
month: October
series: 393
title: Die Zerlegung von Altsystemen in Schichten und Untereinheiten
year: 1999

id258instance
type: Publication
type: TechnicalReport
author: id41instance
author: id57instance
month: February
series: 386
title: A State Space Analysis of Propose-and-Revise
year: 1999

id259instance
type: TechnicalReport
author: id1962instance
month: January
series: 384
title: Erstellen von objektorientierten Beschreibungen für Softwarealtsysteme
year: 1999

id25instance
type: InProceedings
type: Publication
abstract: This article gives an impression how existing RDFS based Semantic Web knowledge web services can already now be integrated in the creation process of semantic nets in MS Visio with SemTalk. We are presenting two examples: looking up object names in WordNet and using Ontobroker as an inference engine on ECCMA ontologies. This article shows how different 2-dimensional visualization techniques such as DAMLVisio or simple Visio shapes can be applied to semantic web models in order to address a broad range of users with very different expectations on the notation.
author: id20instance
booktitle: 6th International Conference on Information Visualisation (IV02), 10 - 12 July 2002, London, England
has project: id3instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
title: On Visualizing the Semantic Web in MS Office
year: 2002

id260instance
type: Publication
type: TechnicalReport
author: id11instance
author: id34instance
author: id41instance
author: id57instance
author: id60instance
author: id67instance
author: id152instance
month: December
series: 383
title: On2broker: Lessons Learned from Applying AI to the Web
year: 1998

id261instance
type: Publication
type: TechnicalReport
author: id11instance
author: id34instance
author: id57instance
author: id67instance
month: November
series: 382
title: ONTOBROKER: Ontology based Access to Distributed and Semi-Structured Information
year: 1998

id263instance
type: Publication
type: TechnicalReport
author: id1966instance
month: January
series: 375
title: Validation of Information Systems by Analyzing Partially Ordered Petri Net Processes
year: 1998

id264instance
type: Publication
type: TechnicalReport
author: id48instance
author: id37instance
month: November
series: 371
title: Matrix Multiplication on Processor Arrays with Optical Buses
year: 1997

id265instance
type: Publication
type: TechnicalReport
author: id15instance
author: id48instance
author: id153instance
month: November
series: 370
title: Improved Heuristics and a Genetic Algorithm for Finding Short Supersequences
year: 1997

id266instance
type: Publication
type: TechnicalReport
author: id1958instance
month: July
series: 363
title: SGML Nets: Integrating Document and Workflow Modeling
year: 1997

id267instance
type: Publication
type: TechnicalReport
author: id48instance
author: id154instance
month: June
series: 378
title: An Island Model based Ant System with Lookahead for the Shortest Supersequence Problem
year: 1998

id268instance
type: Publication
type: TechnicalReport
author: id155instance
author: id156instance
month: November
series: 380
title: Verification of Workflow Task Structures: A Petri-net-based approach
year: 1998

id269instance
type: InCollection
type: Publication
author: id28instance
author: id2instance
author: id78instance
author: id171instance
booktitle: E-Learning fuer die Hochschule - Erfolgreiche Ansätze fuer ein flexibleres Studium
chapter: 7
has project: id19instance
is about: id20instance
month: June
pages: 101-117
title: Java-Start: ein "pflegeleichter" Webkurs
year: 2003

id26instance
type: InProceedings
type: Publication
abstract: Ontologies now play an important role for enabling the semantic web. They provide a source of precisely defined terms e.g. for knowledge-intensive applications. The terms are used for concise communication across people and applications. Typically the development of ontologies involves collaborative efforts of multiple persons. OntoEdit is an ontology editor that integrates numerous aspects of ontology engineering. This paper focuses on collaborative development of ontologies with OntoEdit which is guided by a comprehensive methodology.
author: id20instance
author: id34instance
author: id41instance
author: id57instance
author: id6instance
author: id3instance
booktitle: Proceedings of the First International Semantic Web Conference 2002 (ISWC 2002), June 9-12 2002, Sardinia, Italia
has project: id11instance
is about: id103instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
pages: 221-235
series: LNCS
title: OntoEdit: Collaborative Ontology Engineering for the Semantic Web
volume: 2342
year: 2002

id270instance
type: InProceedings
type: Publication
author: id28instance
author: id2instance
author: id78instance
booktitle: International ILIAS Conference – Proceedings 2002/2003
has project: id19instance
is about: id20instance
month: September
pages: 69 - 75
title: Java Web Course - An Application Of ILIAS
year: 2003

id271instance
type: Publication
type: TechnicalReport
author: id2044instance
author: id157instance
month: September
series: 98
title: Towards E-Learning Grids: Using Grid Computing in Electronic Learning
year: 2003

id272instance
type: Publication
type: TechnicalReport
author: id2044instance
author: id157instance
month: September
series: 2
title: Towards E-Learning Grids: Using Grid Computing in Electronic Learning
year: 2003

id273instance
type: InProceedings
type: Publication
abstract: E-learning has been a topic of increasing interest in recent years, due mainly to the fact that increased scheduling flexibility as well as tool support can now be offered at a widely affordable level. As a result, many e-learning platforms and systems have been developed and commercialized; these are based on client-server, peer-to-peer, or, more recently, Web service architectures, with a major drawback being their limitations in scalability, availability, and distribution of computing power as well as storage capabilities. This paper tries to remedy this situation by proposing the use of grid computing in the context of e-learning. In particular, it is shown what advantages a utilization of grid computing may have to offer and which applications could benefit from it. Moreover, an architecture for an e-learning grid is outlined, and the notion of a grid learning object is introduced.
author: id2044instance
author: id157instance
booktitle: IEEE Workshop on Knowledge Grid and Grid Intelligence (in conjunction with 2003 IEEE/WIC International Conference on Web Intelligence / Intelligent Agent Technology)
is about: id120instance
is about: id20instance
month: October
pages: 4-15
title: Towards E-Learning Grids: Using Grid Computing in Electronic Learning
year: 2003

id275instance
type: InProceedings
type: Publication
author: id14instance
author: id6instance
author: id8instance
booktitle: Proc. of the ICDM 03, The 2003 IEEE International Conference on Data Mining
pages: 541-544
title: Ontologies Improve Text Document Clustering
year: 2003

id276instance
type: InProceedings
type: Publication
author: id14instance
author: id6instance
author: id8instance
booktitle: Proc. of the SIGIR 2003 Semantic Web Workshop
title: WordNet improves text document clustering
year: 2003

id277instance
type: InProceedings
type: Publication
author: id14instance
author: id99instance
booktitle: Proc. of the 7th European Conference in Research and Advanced Technology for Digital Libraries, ECDL 2003
pages: 140-151
title: Automatic multi-label subject indexing in a multilingual environment
volume: 2769
year: 2003

id279instance
type: InProceedings
type: Publication
author: id40instance
author: id57instance
author: id91instance
booktitle: Proc. of 3rd IFIP conference on e-Commerce, e-Business and e-Government (I3E)
month: September
pages: 3-9
title: The Semantic Web - Methods, Application and Tools
year: 2003

id27instance
type: InProceedings
type: Publication
abstract: Knowledge Management (KM) has become an important success factor for enterprises in virtually all areas during the last decade. IT-supported KM solutions are built around some kind of organizational memory that is structured according to an ontology. We present a methodology for application-driven development of ontologies that is instantiated by a case study, viz. the introduction of an ontology-based skills management system at Swiss Life and the lessons learned from the utilisation of the methodology.
author: id20instance
author: id18instance
booktitle: Modellierung 2002, Modellierung in der Praxis - Modellierung für die Praxis, Tutzing, Deutschland, 25.-27. März 2002
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is about: id102instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
pages: 123-134
title: Introducing Ontology-based Skills Management at a large Insurance Company
year: 2002

id280instance
type: InProceedings
type: Publication
author: id32instance
author: id57instance
author: id88instance
author: id8instance
author: id90instance
author: id91instance
author: id159instance
author: id160instance
author: id161instance
author: id163instance
author: id164instance
author: id165instance
author: id166instance
author: id167instance
author: id168instance
author: id186instance
author: id187instance
booktitle: Informatik03 - Jahrestagung der Gesellschaft für Informatik
month: September
pages: 116-131
title: Semantic Methods and Tools for Information Portals
year: 2003

id281instance
type: InProceedings
type: Publication
author: id91instance
author: id169instance
author: id170instance
booktitle: AAAI Spring Symposium - Semantic Web Services
has project: id38instance
has project: id51instance
month: March
title: Credential based Access Control for Semantic Web Services
year: 2004

id282instance
type: InProceedings
type: Publication
abstract: Dieser Beitrag beschreibt an der Universität Karlsruhe entwickelte Werkzeuge, die es ermöglichen, softwaregestützt in Lehrveranstaltungen zu interagieren und zu kooperieren. Unterstützt werden Szenarien zum elektronischen Feedback, Handmeldung und Multiple-Choice-Umfragen mit sofortiger Auswertung. Realisiert wurde das Interaktionssystem mit Hilfe der .NET Technologie unter dem Einsatz von Webservices.
author: id2008instance
author: id29instance
author: id87instance
booktitle: Mobiles Lernen und Forschen
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is about: id20instance
month: November
note: Beiträge der Fachtagung an der Universität Kassel am 6. November 2003
pages: 63-71
title: Kooperationstools der Notebook Universität Karlsruhe (TH)
year: 2003

id283instance
type: InProceedings
type: Publication
abstract: For many applications it is desirable to query knowledge stored in a database or knowledge base through a natural language interface.In this paper we present a Montague-style compositional semantics approach in order to map natural language wh-questions into F(rame)-logic Queries. The semantic representation is constructed on the basis of Lexicalized Tree Adjoining Grammar (LTAG) derivation trees.
address: Amsterdam
author: id98instance
booktitle: Proceedings of 2nd CoLogNET-ElsNET Symposium
has project: id35instance
is about: id111instance
month: December
pages: 130-137
title: Translating Wh-Questions into F-Logic Queries
year: 2003

id284instance
type: Book
type: Publication
address: Heidelberg
editor: id57instance
editor: id6instance
is about: id100instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id105instance
is about: id52instance
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is about: id68instance
is about: id69instance
is about: id70instance
is about: id71instance
is about: id79instance
is about: id80instance
is about: id81instance
title: Handbook on Ontologies
year: 2004

id286instance
type: Book
type: Publication
author: id13instance
author: id6instance
has project: id35instance
is about: id79instance
is about: id80instance
is about: id81instance
title: Annotation for the Semantic Web
year: 2003

id288instance
type: Article
type: Publication
author: id50instance
author: id6instance
has project: id28instance
is about: id80instance
journal: Künstliche Intelligenz
month: July
note: Special issue on Semantic Web
number: 3
pages: 27-30
title: KAON: The Karlsruhe Ontology and Semantic Web Meta Project
year: 2003

id289instance
type: Article
type: Publication
abstract: Ontologies now play an important role for many knowledge-intensive applications for which they provide a source of precisely defined terms. The terms are used for concise communication across people and applications. Tools such as ontology editors facilitate the creation and maintenance of ontologies. OntoEdit is an ontology editor that has been developed keeping five main objectives in mind: 1. Ease of use. 2. Methodology-guided development of ontologies. 3. Ontology development with help of inferencing. 4. Development of ontology axioms. 5. Extensibility through plug-in structure.
author: id20instance
author: id41instance
author: id6instance
has project: id11instance
is about: id70instance
journal: Journal on Data Semantics
month: November
note: LNCS 2800
number: 1
pages: 128-152
title: OntoEdit: Multifaceted Inferencing for Ontology Engineering
volume: 1
year: 2003

id28instance
type: InCollection
type: Publication
abstract: The On-To-Knowledge (OTK) project applies ontologies to electronically available information to improve the quality of knowledge management in large and distributed organizations. This enables sophisticated automatic support for acquiring, representing, and accessing information. Within OTK a methodology and tools for intelligent access to large volumes of semistructured and textual information sources in intra-, extra-, and internet-based environments are developed and applied in several case studies. The methodology provides guidelines for introducing knowledge management concepts and tools into enterprises, helping knowledge providers and seekers to present knowledge efficiently and effectively. The methodology includes the identification of goals that should be achieved by knowledge management tools and is based on an analysis of usage scenarios and different roles knowledge workers and other stakeholders play in organizations. We focus especially on application driven ontology development.
author: id20instance
author: id57instance
booktitle: On-To-Knowledge: Semantic Web enabled Knowledge Management
has project: id11instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
pages: 33-46
title: On-To-Knowledge Methodology
year: 2002

id290instance
type: Article
type: Publication
abstract: [13] S. Handschuh, ~. CREAM ? CREAting Metadata for the Semantic Web. Computer Networks. 42: 579-598, Elsevier 2003.
author: id13instance
author: id6instance
has project: id35instance
is about: id4instance
is about: id81instance
journal: Computer Networks
month: August
note: Elsevier
pages: 579-598
title: CREAM - Creating Metadata for the Semantic Web
volume: 42
year: 2003

id291instance
type: Publication
type: TechnicalReport
author: id1966instance
author: id173instance
month: February
series: 348
title: Proving Correctness of Distributed Algorithms - A Petri Net Approach
year: 1997

id292instance
type: Publication
type: TechnicalReport
author: id1966instance
month: February
series: 349
title: Semi-Entscheidungsverfahren für Fakten und Ziele von Petrinetzen
year: 1997

id293instance
type: Publication
type: TechnicalReport
abstract: Software Reuse is a topic which is discussed in various computer science disciplines. Our work deals with the construction and reuse of knowledge base components from a knowledge engineering point of view. In order to reuse domain knowledge and problem solving knowledge experience has shown that powerful and integrated methods and tools are absolutely necessary. Therefore we describe KARO (Knowledge Acquisition Environment with Reusable Ontologies) providing different means for retrieving and adapting concept definitions of a commonsense ontology as part of a domain model construction process. In our framework commonsense ontologies are defined as highly domain-independent knowledge bases containing conceptual definitions which formalise theories about, e.g., time, objects, space. We introduce the formal, linguistic and graphical methods, the architecture and other properties of KARO. By reusing these ontologies in a well-defined way conceptual domain models can be developed easier and made more robust. In addition, we show how KARO and MIKE (Model-based and Incremental Knowledge Engineering Environment) are integrated in order to support the two main notions of reuse being investigated within knowledge engineering: the reuse of problem solving methods and the reuse of ontologies. Special emphasis is put on handling the interaction between problem solving methods and ontologies.
author: id57instance
author: id58instance
month: May
series: 354
title: Integrating the Reuse of Commonsense Ontologies and Problem Solving Methods
year: 1997

id294instance
type: Publication
type: TechnicalReport
author: id67instance
author: id174instance
author: id175instance
month: May
series: 355
title: Assumptions of Problem-Solving Methods and their Role in Knowledge Engineering
year: 1997

id295instance
type: Publication
type: TechnicalReport
author: id67instance
author: id176instance
month: May
series: 356
title: Specifying Knowledge-Based Systems with Reusable Components
year: 1997

id296instance
type: Publication
type: TechnicalReport
author: id67instance
author: id177instance
month: May
series: 357
title: Assumption Hunting as Developing Method for Problem-Solving Methods
year: 1997

id297instance
type: Publication
type: TechnicalReport
author: id67instance
author: id174instance
month: May
series: 360
title: Assumtions in Model-based Diagnosis
year: 1997

id298instance
type: Publication
type: TechnicalReport
author: id67instance
author: id177instance
month: May
series: 361
title: Verifying Knowledge-Based Systems with KIV
year: 1997

id299instance
type: Publication
type: TechnicalReport
abstract: An empirical evaluation of the ILP system JoJo-FOL is presented. JoJo-FOL uses an iterative method to discover rules for a single concept within the normal inductive logic programming framework. The search process starts with a very restricted hypothesis space to efficiently derive most general and correct clauses first. This strong language bias is weakened by iteratively increasing the number of variables allowed to occur in a clause such that JoJo-FOL is able to induce additional correct but more specific clauses. JoJo-FOL conducts its search through the hypothesis space in a bidirectional manner controlled by two criteria of success derived from the completeness and consistency requirements. In an empirical evaluation JoJo-FOL was tested on two ILP benchmark data sets. The results presented show that the iterative rule discovery method combined with the bidirectional search strategy leads to more general rules and a higher accuracy compared to well-known ILP systems on the tested domains.
author: id35instance
month: May
series: 362
title: Empirical evaluation of an iterative rule discovery system using a bidirectional search strategy
year: 1997

id29instance
type: InCollection
type: Publication
abstract: Developing ontologies is a core activity of the On-To-Knowledge project. The methodology developed within the project guides the case studies for exploiting different ways for construction and usage of ontologies. However, because of the size of ontologies, their complexity, their formal underpinnings and the necessity to come towards a shared understanding within a group of people, ontologies are still far from being a commodity. In recent years, research aimed at paving the way for the construction of ontologies by ontology development environments. Thereby, we have seen different directions taken to support the engineering of ontologies. However, only few of these seminal approaches have worked towards combining all of these urgent desiderata. This observation seems to reflect our own project experience, viz. that it is far from trivial to offer a sound integration of these aspects. Therefore, OntoEdit is an ontology engineering environment that is rather unique in its kind as it combines methodology-based ontology development with capabilities for collaboration and a tight integration into a tool framework, i.e. the On-To-Knowledge framework.
author: id20instance
author: id34instance
author: id57instance
booktitle: On-To-Knowledge: Semantic Web enabled Knowledge Management
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is about: id102instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
title: OntoEdit: Collaborative Engineering of Ontologies
year: 2002

id2instance
type: Article
type: Publication
author: id20instance
author: id40instance
author: id57instance
has project: id10instance
has project: id9instance
is about: id11instance
is about: id52instance
is about: id5instance
journal: Journal of Universal Computer Science (J.UCS)
number: 6
pages: 662-672
title: Managing User Focused Access to Distributed Knowledge
volume: 8
year: 2002

id304instance
type: Publication
type: TechnicalReport
author: id155instance
month: November
series: 381
title: Reengineering Knock-Out Processes
year: 1998

id305instance
type: Publication
type: TechnicalReport
author: id29instance
author: id48instance
month: November
series: 369
title: A Local and Dynamic Algorithm for Reconfiguring a Faulty Processor Array Into a Maximal Fault-Free Subarray
year: 1997

id306instance
type: Publication
type: TechnicalReport
author: id1966instance
author: id1968instance
author: id178instance
author: id179instance
month: July
series: 379
title: Einsatz von Petrinetzen bei der Modellierung komplexer industrieller Systeme - eine Anwendungsübersicht -
year: 1998

id307instance
type: Publication
type: TechnicalReport
author: id11instance
author: id34instance
author: id57instance
author: id67instance
month: January
series: 376
title: Ontobroker: How to make the WWW intelligent
year: 1998

id308instance
type: Publication
type: TechnicalReport
author: id42instance
month: July
series: 391
title: EventFlowL - eine ereignisbasierte Workflow-Modellierungssprache
year: 1999

id309instance
type: Publication
type: TechnicalReport
author: id37instance
author: id91instance
month: August
series: 392
title: Formal language recognition by stochastic cellular automata
year: 1999

id30instance
type: InCollection
type: Publication
abstract: A methodology for introducing an ontology-based KM solution into enterprises is described which extends and improves the CommonKADS methodology by introducing — among others — specific guidelines for developing and maintaining the respective ontology. Special emphasis is put on a stepwise construction and evaluation of the ontology. The methodology is supported by a tool, "OntoKick", that supports ontology engineers in early stages, i.e. the kickoff phase of ontology development.
author: id20instance
booktitle: Ontology and Modeling of Real Estate Transactions in European Juristictions
has project: id11instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
title: A Tool-supported Methodology for Ontology-based Knowledge Management
year: 2002

id310instance
type: Publication
type: TechnicalReport
author: id15instance
month: February
series: 387
title: Evolutionary Algorithms for Dynamic Optimization Problems - A Survey -
year: 1999

id311instance
type: TechnicalReport
author: id1960instance
month: May
series: 388
title: Generalized Problem-Solving Methods
year: 1999

id312instance
type: Publication
type: TechnicalReport
author: id67instance
month: September
series: 367
title: The Tower-of-Adapters Method for Developing and Reusing Problem-Solving Methods
year: 1997

id313instance
type: Publication
type: TechnicalReport
author: id11instance
author: id67instance
author: id180instance
author: id181instance
month: September
series: 366
title: Using Ontologies For Defining Tasks, Problem-Solving Methods and Their Mappings
year: 1997

id314instance
type: Publication
type: TechnicalReport
author: id11instance
author: id34instance
author: id57instance
author: id182instance
month: September
series: 365
title: An Enterprise Reference Scheme for Integrating Model Based Knowledge Engineering and Enterprise Modelling
year: 1997

id315instance
type: Publication
type: TechnicalReport
author: id67instance
month: May
series: 359
title: A Case Study: Assumptions and Limitations of a Problem-Solving Method
year: 1997

id316instance
type: Publication
type: TechnicalReport
author: id67instance
month: May
series: 358
title: An Ontology-based Broker: Making Problem-Solving Method Reuse Work
year: 1997

id317instance
type: Article
type: Publication
author: id13instance
author: id40instance
author: id6instance
journal: IEEE Intelligent Systems
month: September
note: Special issue on information integration
number: 5
pages: 42-48
title: Annotation for the Deep Web
volume: 18
year: 2003

id318instance
type: InProceedings
type: Publication
author: id41instance
author: id6instance
author: id183instance
author: id184instance
author: id3instance
booktitle: Proceedings of the 2nd International Semantic Web Conference (ISWC2003), October, 2003, Sanibel Island, FL, USA
pages: 913-928
title: Ontology-based Query and Answering in Chemistry: OntoNova @ Project Halo
year: 2003

id319instance
type: InProceedings
type: Publication
author: id14instance
author: id6instance
author: id8instance
booktitle: Principles of Data Mining and Knowledge Discovery, 7th European Conference, PKDD 2003, Dubrovnik, Croatia, September 22-26, 2003
month: September
pages: 217-228
title: Explaining Text Clustering Results using Semantic Structures
year: 2003

id31instance
type: InProceedings
type: Publication
abstract: We present FRED, an ontology-based agent and its application in an E-Coaching scenario at a large company. We illustrate the architecture and underlying technology of our agent platform, e.g. ontologies, and present our methodology for ontology development as well as a brief cost-benefit analysis, thus showing also commercial aspects.
author: id20instance
author: id21instance
booktitle: Second International Workshop on Ontologies in Agent Systems (OAS 2002) , held at the 1st International Conference on Autonomous Agents & Multiagent Systems, 15 or 16 July 2002, Bologna, Italy.
is about: id102instance
is about: id103instance
is about: id104instance
is about: id11instance
is about: id1instance
is about: id20instance
is about: id68instance
is about: id69instance
is about: id70instance
title: FRED: Ontology-based Agents for enabling E-Coaching Support in a large Company
year: 2002

id320instance
type: Misc
type: Publication
author: id40instance
author: id57instance
author: id6instance
author: id79instance
has project: id26instance
has project: id28instance
howpublished: WonderWeb Deliverable D7
note: http://wonderweb.semanticweb.org
title: KAON SERVER Demonstrator
year: 2003

id321instance
type: Article
type: Publication
author: id13instance
author: id32instance
author: id40instance
author: id53instance
author: id6instance
has project: id1instance
has project: id28instance
journal: Web Semantics
note: To Appear
title: Unveiling the hidden bride: Deep Annotation for Mapping and Migrating Legacy Data to the Semantic Web
year: 2004

id322instance
type: InProceedings
type: Publication
author: id40instance
author: id50instance
author: id188instance
booktitle: Proc. of the 2nd Learning Language in logic (LLL) Workshop, Lissabon, September 2000
title: Extracting a Domain-Specific Ontology from a corporate Intranet
year: 2000

id323instance
type: InProceedings
type: Publication
author: id40instance
author: id50instance
author: id188instance
booktitle: Proc. of Workshop Ontologies and Text, co-located with the 12th International Workshop on Knowledge Engineering and Knowledge Management (EKAW'2000), Juan-Les-Pins, France
title: A Method for semi-automatic ontology acquisition from a corporate intranet
year: 2000

id326instance
type: InProceedings
type: Publication
address: San Jose, California, USA
author: id40instance
author: id50instance
booktitle: Workshop on Integrating Data Mining and Knowledge Management co-located with the 1st International Conference on Data Mining
month: 11
title: The Text-To-Onto Ontology Extraction and Maintenance System
year: 2001

id327instance
type: InProceedings
type: Publication
address: Hamburg, Germany
author: id40instance
author: id189instance
author: id5instance
booktitle: KRDB Workshop Colocated with KI 2003
month: 9
title: Optimizing Query Answering in Description Logics using DisjunctiveDeductive Databases
year: 2003

id328instance
type: InProceedings
type: Publication
address: Sicily
author: id40instance
author: id6instance
author: id5instance
booktitle: Proc. of CoopIS/DOA/ODBASE 2003
pages: 707-724
series: LNCS
title: Incremental Maintenance of Materialized Ontologies
volume: 2888
year: 2003

id329instance
type: Proceedings
type: Publication
address: Sanibel Island, Florida, USA
editor: id11instance
editor: id40instance
editor: id242instance
month: October
title: Proc. of first Int. Workshop on Practical and Scalable Semantic Systems
volume: 89
year: 2003

id32instance
type: InProceedings
type: Publication
author: id50instance
author: id6instance
booktitle: Proceedings of the 9th International Conference for Information and Communication Technologies in Tourism, ENTER 2002, Innsbruck, Austria, 23 - 25th January 2002
is about: id79instance
is about: id80instance
title: Applying Semantic Web Technologies for Tourism Information Systems
year: 2002

id330instance
type: InProceedings
type: Publication
address: Sanibel Island, Florida, USA
author: id40instance
author: id6instance
author: id5instance
booktitle: Proc. of first Int. Workshop on Practical and Scalable Semantic Systems
month: October
title: Incremental Maintenance of Dynamic Datalog Programs
volume: 89
year: 2003

id331instance
type: Publication
type: TechnicalReport
author: id40instance
author: id190instance
author: id191instance
month: July
title: Requirements for a Web Ontology language
year: 2002

id332instance
type: Publication
type: TechnicalReport
author: id40instance
author: id192instance
author: id193instance
author: id194instance
title: Web Ontology Language (OWL) Guide Version 1.0
year: 2002

id333instance
type: Article
type: Publication
author: id40instance
author: id50instance
author: id57instance
author: id99instance
journal: Journal of Universal Computer Science
month: June
number: 6
pages: 520-529
title: Pruning-based Identification of Domain Ontologies
volume: 9
year: 2003

id334instance
type: InProceedings
type: Publication
author: id15instance
author: id44instance
booktitle: Multidisciplinary International Conference on Scheduling Theory and Applications (MISTA'03)
month: August
pages: 506-523
title: Task scheduling under gang constraints
year: 2003

id335instance
type: InProceedings
type: Publication
author: id15instance
author: id195instance
booktitle: Genetic and Evolutionary Computation Conference (GECCO'03)
is about: id31instance
month: July
pages: 537-548
title: Theoretical analysis of simple evolution strategies in quickly changing environments
year: 2003

id336instance
type: InProceedings
type: Publication
author: id15instance
author: id196instance
author: id197instance
booktitle: Genetic and Evolutionary Computation Conference (GECCO'03)
is about: id65instance
month: July
pages: 754-765
title: Ant-based crossover for permutation problems
year: 2003

id337instance
type: InProceedings
type: Publication
author: id15instance
author: id72instance
booktitle: Genetic and Evolutionary Computation Conference (GECCO'03)
is about: id154instance
month: July
pages: 766-777
title: Selection in the presence of noise
year: 2003

id338instance
type: InProceedings
type: Publication
author: id15instance
author: id16instance
author: id29instance
booktitle: Genetic and Evolutionary Computation Conference (GECCO'03)
is about: id65instance
month: July
pages: 1568-1569
title: A unified framework for metaheuristics
year: 2003

id339instance
type: InProceedings
type: Publication
author: id15instance
author: id19instance
booktitle: Applications of Evolutionary Computing
is about: id154instance
month: July
pages: 165-175
title: New ideas for applying ant colony optimization to the probabilistic TSP
year: 2003

id33instance
type: InProceedings
type: Publication
author: id13instance
author: id6instance
author: id22instance
author: id9instance
booktitle: Proceedings of the 15th International FLAIRS Conference. Pensacola, Florida, May 16-18, 2002
has project: id23instance
is about: id79instance
is about: id80instance
title: Semantic Web Service Architecture - Evolving Web Service Standards toward the Semantic Web
year: 2002

id340instance
type: Article
type: Publication
author: id15instance
journal: Information Technology
month: June
number: 45
pages: 170-173
title: Evolutionäre Optimierung dynamischer Probleme
volume: 3
year: 2003

id341instance
type: Proceedings
type: Publication
address: Chicago, USA
editor: id15instance
is about: id31instance
month: July
note: Online: http://www.ubka.uni-karlsruhe.de/cgi-bin/psview?document=2003%2Fwiwi%2F1
title: GECCO Workshop on Evolutionary Algorithms for Dynamic Optimization Problems
year: 2003

id342instance
type: InProceedings
type: Publication
author: id15instance
booktitle: GECCO Workshop on Evolutionary Algorithms for Dynamic Optimization Problems
is about: id31instance
month: July
pages: 2-4
title: Evolutionary approaches to dynamic optimization problems - introduction and recent trends
year: 2003

id343instance
type: InProceedings
type: Publication
abstract: Multimedia engineering is the concept of building up a multimedia product, including principles, methods and techniques for all stages of development. This concept is strongly shaped by an interdisciplinary working method. Today’s professionals of different disciplines have to proof their skills in a global environment with various tasks. They must cooperate in areas of conflict, such as technical, educational, psychological and economical questions. Therefore multimedia companies are looking for high-profile candidates with sound knowledge of their subject area, as well as teamwork and other key qualifications. It is the task and challenge of universities to qualify their students in an optimal manner for their further professional careers by endowing them with special field knowledge and interdisciplinary skills. Therefore the Institute AIFB of the University of Karlsruhe has developed a seminar concept, which takes into account the qualifications demanded by the multimedia industry. In the following article, the authors would like to explain this concept.
address: Honolulu, Hawaii, USA
author: id29instance
author: id65instance
booktitle: Proc. of the World Conference on Educational Multimedia, Hypermedia & Telecommunications (edmedia 2003)
month: June
pages: 2542-2547
title: Teaching Multimedia-Engineering: a conceptual framework for project based learning
year: 2003

id344instance
type: InCollection
type: Publication
author: id2instance
author: id33instance
booktitle: Credit risk: measurement, evaluation and management
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is about: id13instance
is about: id30instance
is about: id39instance
is about: id63instance
is about: id74instance
is about: id78instance
pages: 231-266
title: Finding constrained downside risk-return efficient credit portfolio structures using hybrid multi-objective evolutionary computation
year: 2003

id345instance
type: Misc
type: Publication
author: id2instance
author: id33instance
howpublished: Complexity 2003: Complex Behaviour in Economics Conference, Aix-en-Provence, France
is about: id13instance
is about: id46instance
is about: id54instance
is about: id74instance
is about: id78instance
month: May
title: The building blocks of complexity: a unified criterion and selected applications in risk management
year: 2003

id347instance
type: Proceedings
type: Publication
address: Cavtat/Dubrovnik, Croatia
editor: id14instance
editor: id8instance
editor: id17instance
editor: id201instance
editor: id202instance
editor: id203instance
month: September
title: Proc. Workshop EWMF 2003 of the 14th Europ. Conference on Machine Learning (ECML 2003) / 7th Europ. Conference on Principles and Practice of Knowledge Discovery in Databases (PKDD 2003)
year: 2003

id348instance
type: Article
type: Publication
author: id8instance
author: id207instance
author: id208instance
author: id86instance
journal: Journal of Applied Artificial Intelligence (AAI)
month: March
number: 3
pages: 281-302
title: Conceptual Knowledge Discovery - a human-centered approach
volume: 17
year: 2003

id349instance
type: Article
type: Publication
author: id8instance
author: id205instance
author: id206instance
journal: Journal of Applied Artificial Intelligence (AAI)
month: March
number: 3
pages: 257-280
title: Document Retrieval for Email Search and Discovery using Formal Concept Analysis
volume: 17
year: 2003

id34instance
type: InProceedings
type: Publication
author: id6instance
author: id23instance
booktitle: Proceedings of the 19th Conference on Computational Linguistics, COLING-2002, August 24 - September 1, 2002 , Taipei, Taiwan, 2002
has project: id27instance
is about: id49instance
is about: id70instance
title: Taxonomy Learning - Factoring the structure of a taxonomy into a semantic classification decision
year: 2002

id350instance
type: Article
type: Publication
author: id8instance
journal: International Journal on Human-Computer Studies (IJHCS)
month: September
number: 3
pages: 287-325
title: Off to New Shores - Conceptual Knowledge Discovery and Processing
volume: 59
year: 2003

id351instance
type: InProceedings
type: Publication
address: Heidelberg
author: id8instance
author: id204instance
booktitle: Conceptual Structures for Knowledge Creation and Communication
month: July
pages: 131-145
series: LNAI
title: Creation and Merging of Ontology Top-Levels
volume: 2746
year: 2003

id352instance
type: InProceedings
type: Publication
address: Osaka, Japan
author: id13instance
author: id14instance
author: id57instance
author: id8instance
author: id5instance
booktitle: New Trends in Knowledge Processing - Data Mining, Semantic Web and Computational Science. Proc. 6th Sanken International Symposium
month: March
note: March 10-11, 2003
pages: 31-34
title: Building and Using the Semantic Web
year: 2003

id353instance
type: Proceedings
type: Publication
address: Universität Karlsruhe
editor: id14instance
editor: id8instance
month: October
note: Proceedings der Workshopwoche der GI-Fachgruppen/Arbeitskreise FGML, FGWM, ABIS, AKKD
title: Lehren - Lernen - Wissen - Adaptivität (LLWA 2003)
year: 2003

id354instance
type: InProceedings
type: Publication
author: id23instance
author: id38instance
booktitle: Workshop "Datenbanken und E-Learning", GI-Fachtagung "BTW 2003 - Datenbanksysteme für Business, Technologie und Web", Leipzig
has project: id8instance
is about: id20instance
month: February
title: Blended Learning in der Datenbank-Ausbildung
year: 2003

id355instance
type: InProceedings
type: Publication
author: id1instance
author: id23instance
author: id38instance
booktitle: Proceedings "Wirtschaftsinformatik 2003 – Medien, Märkte, Mobilität", Dresden
has project: id8instance
is about: id20instance
month: September
pages: 765-784
title: E-Learning-Komponenten in zielgruppenorientierten Lehr- und Lernszenarien
year: 2003

id356instance
type: InProceedings
type: Publication
author: id1876instance
author: id2058instance
author: id23instance
author: id38instance
author: id163instance
author: id209instance
author: id210instance
author: id211instance
author: id212instance
author: id213instance
author: id214instance
author: id215instance
author: id216instance
author: id217instance
author: id218instance
booktitle: Proceedings Informatik 2003 - Innovative Informatikanwendungen, GI-Jahrestagung, Frankfurt
has project: id36instance
is about: id107instance
month: September
number: P-34
pages: 132-147
series: LNI
title: Konzeption und Betrieb eines Kompetenz- und Dienstleistungsnetzes für die Informatik
year: 2003

id357instance
type: InProceedings
type: Publication
author: id40instance
author: id83instance
booktitle: Proceedings of Evaluation of Ontology-based Tools (EON2003) at 2nd International Semantic Web Conference (ISWC 2003)
has project: id28instance
has project: id30instance
is about: id68instance
is about: id69instance
is about: id71instance
is about: id79instance
is about: id80instance
month: October
pages: 4-15
title: Towards a benchmark for Semantic Web reasoners - an analysis of the DAML ontology library
year: 2003

id358instance
type: InProceedings
type: Publication
address: Berlin
author: id2023instance
author: id6instance
author: id80instance
author: id83instance
booktitle: Proceedings of JXTA Workshop - Potenziale, Konzepte, Anwendungen
has project: id30instance
is about: id102instance
is about: id104instance
is about: id80instance
month: November
pages: 85-90
title: SWAP - A Semantics-Based Peer-to-Peer System
year: 2003

id359instance
type: InProceedings
type: Publication
address: Erfurt, Germany
author: id2023instance
author: id57instance
author: id6instance
author: id80instance
author: id83instance
author: id137instance
author: id84instance
booktitle: Proceedings of MATES-2003. First German Conference on Multiagent Technologies
has project: id30instance
is about: id104instance
is about: id68instance
is about: id79instance
is about: id98instance
month: September
pages: 144-155
series: LNAI
title: The SWAP data and metadata model for semantics-based peer-to-peer systems
volume: 2831
year: 2003

id35instance
type: InProceedings
type: Publication
author: id50instance
author: id6instance
booktitle: Proc. Of the European Conference on Knowledge Acquisition and Management - EKAW-2002. Madrid, Spain, October 1-4, 2002
has project: id12instance
is about: id61instance
is about: id69instance
is about: id70instance
series: LNCS/LNAI
title: Measuring Similarity between Ontologies
volume: 2473
year: 2002

id360instance
type: InCollection
type: Publication
author: id21instance
author: id23instance
author: id38instance
booktitle: Web-Based Education - Learning from Experience
has project: id8instance
is about: id20instance
pages: 398-414
title: WeBCEIS - A scenario for integrating the web-based education into the classical education
year: 2003

id361instance
type: InProceedings
type: Publication
abstract: One of the vital problems in the searching for information is the ranking of the retrieved results, because users make typically very short queries (2-3 terms) and tend to consider only the first ten results. In traditional IR approaches the relevance of the results is determined only by analysing the underlying information repository (content and hyperlink structure), which leads to the weak relevance model. On the other hand, in the Semantic Web the querying process is supported by an ontology such that other important sources for determining the relevance of results can be considered: the structure of the underlying domain and the characteristics of the searching process. In this paper we present a novel approach for determining relevance in ontology-based searching for information, which exploits the “full potentialâ€ of the semantics of such a semantically-based link structure. We present several analyses about how a Semantic Web querying mechanism can benefit of using our ranking approach.
author: id32instance
author: id53instance
author: id57instance
booktitle: ISWC 2003
has project: id32instance
month: October
pages: 500-516
title: An Approach for the Ranking of Query Results in the Semantic Web
year: 2003

id362instance
type: InProceedings
type: Publication
abstract: In this paper, we present an approach for the disambiguation of ontology-based queries. The approach is based on measuring the ambiguity of a query with respect to the user’s initial information need. We define several types of ambiguities concerning the structure of the underlying ontology and the content of the information repository. For each of these ambiguities we define a set of refinements/explanations, which helps in more efficient searching for information in an ontology-based information repository. We demonstrate the benefits of using our approach in an evaluation study.
author: id32instance
booktitle: ER 2003
has project: id32instance
month: December
pages: 490-505
series: LNCS
title: On Analysing Query Ambiguity for Query Refinement: The Librarian Agent Approach
volume: 2813
year: 2003

id363instance
type: InProceedings
type: Publication
author: id32instance
booktitle: WI 2003
has project: id32instance
is about: id68instance
is about: id79instance
month: October
pages: 388-395
title: Information-need Driven Query Refinement
year: 2003

id364instance
type: InProceedings
type: Publication
abstract: In this paper we present an approach to model ontology evolution as reconfiguration-design problem solving. The problem is reduced to a graph search where the nodes are evolving ontologies and the edges represent the changes that transform the source node into the target node. The search is guided by the constraints provided partially by a user and partially by a set of rules defining ontology consistency. In this way we allow a user to specify an arbitrary request declaratively and ensure its resolving. The approach is implemented in the KAON framework and the evaluation study shows its benefits.
author: id32instance
author: id50instance
author: id53instance
author: id57instance
booktitle: KCAP 2003
has project: id32instance
is about: id70instance
month: October
pages: 162-171
title: Ontology Evolution as Reconfiguration-Design Problem Solving
year: 2003

id365instance
type: InProceedings
type: Publication
abstract: In this paper we present the conceptual architecture of ONTOLOGER, a system for usage-driven management of querying for information in ontology-based information portals. The system is based on the analysis of users’ activities that are acquired in the so-called semantic log file, which contains information about the content of a visited page as well. These analyses are used for managing (i) the underlying ontology, (ii) querying mechanism and (iii) the content of the information repository, in order to ensure that (a) the structure of the vocabulary reflects the needs of users, (b) the highly-relevant results can be found by users although they make short queries and read only top-ranked results and (c) the information repository contains (only) resources users are interested in. The focus of the paper is on improving querying (retrieval) mechanism based on the usage data. We present a case study, which shows how a portal can benefit from implementing presented management system.
author: id32instance
author: id53instance
author: id88instance
booktitle: KCAP 2003
has project: id32instance
is about: id68instance
is about: id70instance
is about: id79instance
month: October
pages: 172-179
title: ONTOLOGER - a System for Usage-driven Management of Ontology-based Information Portals
year: 2003

id366instance
type: InProceedings
type: Publication
abstract: In this paper, we propose an approach for guiding ontology managers through the modification of an ontology with respect to users' needs. It is based on the analysis of end-users' interactions with the ontology-based applications, which are tracked into the usage-log. Several measures taking into account the ontology hierarchy are defined. Their application on the usage log results in the set of the recommendations for the ontology improvement. The approach has been implemented in the system called OntoManager. The evaluation study shows the benefits of supporting ontology management by our approach.
author: id32instance
author: id53instance
author: id57instance
author: id88instance
booktitle: ODBASE 2003
has project: id32instance
is about: id68instance
is about: id69instance
is about: id79instance
month: December
pages: 858-875
title: OntoManager - a system for the usage-based ontology management
volume: 2888
year: 2003

id367instance
type: InProceedings
type: Publication
abstract: In this paper we present an approach for the query refinement called Librarian Agent Query Refinement Process, which simulates the role a human librarian plays in the searching for information resources in a library. The process consists of two phases: Problem Discovery, in which the potential problems (ambiguities) of the initial query are discovered and estimated and Query Refinement, which analyses these ambiguities in order to provide suitable modification of that query that increases the precision and recall of the searching process. The Agent performs comprehensive analyses of a query, based on the structure of the used vocabulary in an information portal and the content of its information repository. Moreover, the information about the previous users’ behaviour and the activities of the current user are used for making the query refinement process more efficient (i.e. usage-driven and personalized). From the user’s point of view, the main advantage of such an approach is that it enables a user to satisfy his information need in a more intuitive and efficient way.
author: id32instance
booktitle: WISE 2003
has project: id32instance
is about: id68instance
month: December
pages: 41-52
title: On the Role of Query Refinement in Searching for Information: The Librarian Agent Query Refinement Process
year: 2003

id368instance
type: InProceedings
type: Publication
author: id2042instance
booktitle: Proceedings Informatik 2003 - Innovative Informatikanwendungen, GI-Jahrestagung, Frankfurt
is about: id109instance
month: September
number: P-35
pages: 349-354
series: LNI
title: Dienstleistungsnetzwerk im Handwerk: Mobiles Wissen mit Hilfe von Endgeräten beim Kunden vor Ort
year: 2003

id369instance
type: InProceedings
type: Publication
address: Augsburg
author: id12instance
author: id2041instance
author: id2042instance
author: id2043instance
booktitle: Mobile Economy - Transaktionen, Prozesse, Anwendungen und Dienste
is about: id108instance
is about: id59instance
month: February
number: P-42
pages: 178 - 189
series: LNI
title: Rechtliche Grundlagen des Mobilen Marketings
year: 2004

id370instance
type: InProceedings
type: Publication
address: Essen
author: id2041instance
author: id2042instance
author: id2043instance
booktitle: Proceedings of the MKWI 2004 Track on Techniques and Applications for Mobile Commerce
month: March
title: Privacy and Security of Personal Data: requirements and techniques for mobile communication terminals and applications
year: 2004

id372instance
type: Article
type: Publication
author: id76instance
author: id104instance
author: id105instance
author: id106instance
author: id12instance
author: id13instance
author: id221instance
has project: id27instance
is about: id123instance
is about: id139instance
journal: Journal of Web Semantics
month: February
number: 2
title: Super-Peer-Based Routing Strategies for RDF-Based Peer-to-Peer Networks
volume: 1
year: 2004

id373instance
type: InProceedings
type: Publication
author: id13instance
author: id50instance
author: id6instance
booktitle: Proceedings of K-Cap 2001
has project: id23instance
is about: id80instance
is about: id81instance
month: October
pages: 76-83
title: CREAM - Creating relational metadata with a component-based, ontology-driven annotation framework
year: 2001

id374instance
type: InProceedings
type: Publication
abstract: Creating metadata by annotating documents is one of the major techniques for putting machine understandable data on the Web. Though there exist many tools for annotating web pages, few of them fully support the creation of semanti-cally interlinked metadata, such as necessary for a truely Semantic Web. In this paper, we present an ontology-based annotation environment, On-toAnnotate, which offers comprehensive support for the creation of semantically interlinked meta-data by human annotators.
author: id13instance
author: id50instance
author: id6instance
booktitle: Proc. of The First International Workshop on MultiMedia Annotation, Tokyo, Japan
has project: id23instance
is about: id80instance
is about: id81instance
month: January
title: An Annotation Framework for the Semantic Web
year: 2001

id375instance
type: Publication
type: TechnicalReport
author: id13instance
author: id50instance
author: id6instance
has project: id23instance
is about: id80instance
is about: id81instance
month: January
title: Creating Metadata for the Semantic Web: An Annotation Framework and the Human Factor
year: 2001

id376instance
type: InProceedings
type: Publication
address: Berlin
author: id13instance
author: id57instance
author: id6instance
booktitle: KI '2003 - Advances in Artificial Intelligence. Proc. of the Annual German Conference on AI
has project: id23instance
is about: id80instance
is about: id81instance
month: September
pages: 19-33
title: Leveraging metadata creation for the Semantic Web with CREAM
volume: 2821
year: 2003

id377instance
type: InCollection
type: Publication
author: id13instance
author: id6instance
booktitle: Annotation for the Semantic Web
has project: id23instance
has project: id35instance
is about: id80instance
is about: id81instance
month: September
series: Frontiers in Artificial Intelligence and Applications
title: Annotation of the Shallow and the Deep Web
volume: 96
year: 2003

id378instance
type: Misc
type: Publication
author: id13instance
author: id40instance
author: id50instance
author: id53instance
author: id80instance
howpublished: The eleventh International World Wide Web Conference WWW2002, poster track, Hawaii, 2002
is about: id79instance
is about: id80instance
month: May
title: Ontology-Focused Crawling of Documents and Relational Metadata
year: 2002

id379instance
type: InProceedings
type: Publication
author: id2023instance
author: id6instance
author: id80instance
author: id83instance
author: id222instance
author: id7instance
author: id81instance
author: id82instance
author: id84instance
booktitle: Proceedings of the WWW'03 Workshop on Semantics in Peer-to-Peer and Grid Computing
has project: id30instance
is about: id79instance
month: May
title: A Metadata Model for Semantics-Based Peer-to-Peer Systems
year: 2003

id380instance
type: InProceedings
type: Publication
author: id2007instance
author: id6instance
booktitle: K-CAP 2003 – Proceedings of the Second International ACM Conference on Knowledge Capture. October 23-25, 2003, Sanibel Island, FL, USA
month: October
pages: 146-153
title: FONTE - Factorizing ONTology Engineering complexity
year: 2003

id382instance
type: InCollection
type: Publication
author: id14instance
author: id50instance
author: id6instance
author: id16instance
booktitle: Text Mining. Theoretical Aspects and Applications
title: On Knowledgeable Unsupervised Text Mining
year: 2003

id383instance
type: InCollection
type: Publication
author: id14instance
author: id50instance
author: id6instance
author: id16instance
booktitle: Text Mining. Theoretical Aspects and Applications
title: On Knowledgeable Unsupervised Text Mining
year: 2003

id384instance
type: InCollection
type: Publication
author: id2000instance
author: id50instance
author: id6instance
booktitle: Web Intelligence
title: Ontology Learning Part One – On Discoverying Taxonomic Relations from the Web
year: 2003

id385instance
type: InCollection
type: Publication
author: id57instance
author: id67instance
author: id6instance
author: id137instance
booktitle: Towards the Semantic Web – Ontology-based Knowledge Management
chapter: 14
pages: 245-264
title: A Future Perspective: Exploiting Peer-to-Peer and the Semantic Web for Knowledge Management
year: 2003

id386instance
type: InProceedings
type: Publication
author: id2007instance
author: id6instance
booktitle: Proc. of IJCAI'03 Workshop on Ontologies and Distributed Systems
month: August
pages: 37-43
title: Engineering a complex ontology with time
year: 2003

id387instance
type: InProceedings
type: Publication
address: K-Cap 2003
author: id13instance
author: id6instance
author: id98instance
author: id223instance
author: id224instance
author: id225instance
author: id31instance
booktitle: 2nd Workshop on Knowledge Markup and Semantic Annotation
month: October
pages: 89-94
title: Requirements for Information Extraction for Knowledge Management (Position Paper)
year: 2003

id388instance
type: InProceedings
type: Publication
address: Karlsruhe
author: id2023instance
author: id6instance
author: id80instance
author: id83instance
booktitle: Proceedings zum Treffen der Fachgruppe Wissensmanagement (FGWM) der Gesellschaft für Informatik
has project: id30instance
is about: id107instance
is about: id68instance
is about: id79instance
month: October
note: 6.-8.10.2003
pages: 173-174
title: SWAP - A Semantics-Based Peer-to-Peer System Demonstration
year: 2003

id389instance
type: Article
type: Publication
author: id11instance
author: id41instance
author: id6instance
author: id100instance
author: id226instance
author: id227instance
author: id61instance
journal: IEEE Intelligent Systems, Trends & Controversies
month: October
number: 5
pages: 76-83
title: Where are the rules?
volume: 18
year: 2003

id38instance
type: InProceedings
type: Publication
abstract: In recent years ontologies -- shared conceptualizations of some domain -- are increasingly seen as the key to further automation of information processing. Although many approaches for representing and applying ontologies have already been devised, they haven't found their way into enterprise applications. In this paper we argue that ontology-based systems lack critical technical features, such as scalability, reliability, concurrency and integration with existing data sources, as well as the support for modularization and meta-concept modeling from the conceptual modeling perspective. We present a conceptual modeling approach that balances some of the trade-offs to more easily integrate into existing enterprise information infrastructure. Our approach is implemented within KAON, the Karlsruhe Ontology and Semantic Web tool suite.
author: id40instance
author: id50instance
author: id5instance
booktitle: Proceedings of the First International Conference on Ontologies, Databases and Application of Semantics (ODBASE-2002)
has project: id26instance
has project: id28instance
is about: id69instance
is about: id70instance
is about: id71instance
is about: id72instance
is about: id73instance
is about: id74instance
is about: id75instance
is about: id76instance
is about: id77instance
is about: id78instance
is about: id79instance
is about: id80instance
title: A Conceptual Modeling Approach for Semantics-Driven Enterprise Applications
year: 2002

id390instance
type: Article
type: Publication
author: id6instance
author: id228instance
author: id229instance
author: id230instance
author: id231instance
author: id232instance
author: id233instance
author: id234instance
author: id235instance
author: id236instance
journal: IEEE Intelligent Systems, Trends & Controversies
month: August
number: 4
pages: 72-86
title: Neurons, Viscose Fluids, Freshwater Polyp Hydra – and other Self-organizing Information Systems
volume: 18
year: 2003

id391instance
type: Article
type: Publication
author: id1978instance
author: id50instance
author: id67instance
author: id6instance
author: id174instance
author: id237instance
author: id238instance
author: id241instance
journal: IEEE Intelligent Systems, Trends & Controversies
month: February
number: 1
pages: 72-85
title: Web services: Been there, Done that?
volume: 18
year: 2003

id392instance
type: Article
type: Publication
author: id6instance
journal: Comparative and Functional Genomics
month: February
note: Wiley
number: 1
pages: 98-103
title: The Semantic Web: New ways to integrate and present information. (Extended Abstract of Invited Talk)
volume: 4
year: 2003

id393instance
type: InProceedings
type: Publication
author: id79instance
author: id122instance
author: id125instance
author: id82instance
booktitle: The Thirteenth International World Wide Web Conference Proceedings
has project: id28instance
has project: id51instance
month: May
pages: 563-572
title: Foundations for Service Ontologies: Aligning OWL-S to DOLCE
year: 2004

id394instance
type: InProceedings
type: Publication
author: id79instance
author: id122instance
author: id125instance
author: id82instance
booktitle: Papers from 2004 AAAI Spring Symposium - Semantic Web Services
has project: id28instance
number: SS-04-06
pages: 52-60
title: Foundations for OWL-S: Aligning OWL-S to DOLCE
year: 2004

id395instance
type: InProceedings
type: Publication
author: id2065instance
author: id91instance
booktitle: Ontologien in der und für die Softwaretechnik
has project: id51instance
month: March
title: SmartAPI - Associating Ontologies and APIs for Rapid Application Development
year: 2004

id396instance
type: InProceedings
address: Honolulu, Hawaii, USA
author: id1998instance
booktitle: Proc. of the World Conference on Educational Multimedia, Hypermedia & Telecommunications (edmedia 2003)
month: June
pages: 2845-2848
title: ULI - A New Perspective For Distance Learning In Technical Oriented Areas Using New Media In The Traditional German University Education System
year: 2003

id397instance
type: InProceedings
address: Hong Kong
author: id1998instance
booktitle: 21st ICDE World Conference on Open Learning & Distance Education
month: February
title: ULI - A Germany Wide Cooperation of Universities in Computer Science Studies Using Multimedia and New Concepts (Experiences, Problems and Outlook)
year: 2004

id398instance
type: Article
author: id1998instance
journal: Karlsruher Transfer
pages: 28-33
title: Neue Wege im Informatik-Studium mit ULI?
volume: Jahrgang 17 WS 2003/04, Nr. 29
year: 2004

id399instance
type: Publication
type: TechnicalReport
author: id2023instance
author: id83instance
has project: id30instance
month: January
title: Peer Selection in Peer-to-Peer Networks with Semantic Topologies
year: 2004

id3instance
type: Book
type: Publication
abstract: Meeting of the German Fachgruppe "Knowledge Management" - the former Fachgruppen on Case-Based Reasoning and Knowledge Engineering - of the Fachbereich 1 "Artificial Intelligence" of the German Society for Informatics. Gaining maximum momentum from previous experiences requires intelligent, comprehensive knowledge management methodologies and technologies like Case-based Reasoning or Knowledge Engineering. The workshop aimed to foster exchange between practitioners and researchers in intelligent systems for experience management (EM).
author: id6instance
author: id4instance
is about: id100instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id52instance
month: March
series: Lecture Notes in Informatics
title: 1st German Workshop on Experience Management: Sharing Experiences about the Sharing of Experience, Berlin, March 7-8, 2002, Proceedings
volume: P-10
year: 2002

id400instance
type: InProceedings
type: Publication
abstract: In this paper we presented a framework for the query refinement which is driven by the user’s information needs. Based on the analyses of the real IR case studies we gathered the requirements and modeled the query refinement process as the process of changing query ambiguity according to a user ‘s need. We define several semantic and structural ambiguities, implied by the used vocabulary and information repository, respectively. As our evaluation study shows, the usability of the approach overcomes the traditional information retrieval problems and enables the realisation of an e-shop-assistant in the e-commerce applications.
author: id32instance
booktitle: IKNOW 2003
month: July
pages: 123-131
title: A Comprehensive Approach for the Query Refinement in Information Portals
year: 2003

id401instance
type: InProceedings
type: Publication
abstract: One of the main problems in the (web) information retrieval is the ambiguity of the users’ queries, since the users tend to post very short queries. This seems to be valid for the ontology-based information retrieval in which the domain ontology is used as the backbone of the searching process. In this paper we present a novel approach for determining the possible refinements of an ontology-based query. The approach is based on measuring the ambiguity of a query with respect to the original user information need. We defined several types of the ambiguities concerning the structure of the underlying ontology and the content of the information repository. For each of these ambiguities we defined the set of refinements/explanations, which help in more efficient searching for information in an ontology-based information repository.
author: id32instance
booktitle: CAiSE 2003
is about: id68instance
month: June
pages: 25 - 32
title: On the Query Refinement in the Ontology-based Searching for Information
year: 2003

id402instance
type: Article
type: Publication
author: id32instance
has project: id32instance
is about: id68instance
journal: J.UCS Special Issue WM 2003, Volume 9 / Issue 7, July 2003
month: July
title: On the role of a Librarian Agent in Ontology-based Knowledge Management Systems
year: 2003

id403instance
type: InProceedings
type: Publication
abstract: In this paper, we present an agent-based approach for the improvement of searching in an ontology-based knowledge management system. The system implements a library scenario in which users query the repository for knowledge resources. Consequently, the so-called Librarian Agent plays the role of the human librarian in the traditional library – it uses all possible information, about the domain vocabulary, the behaviour of previous users and the capacity of the knowledge repository, in order to help users find the resources they are interested in. We partially implemented the approach in the Web Portal of our Institute and some initial evaluation results are shown.
author: id32instance
booktitle: WM 2003
has project: id32instance
is about: id68instance
month: April
pages: 237 - 246
title: On the role of a Librarian Agent in Ontology-based Knowledge Management Systems
year: 2003

id404instance
type: InProceedings
type: Publication
abstract: One of the main strengths of an ontology-based system is the intensional description of the knowledge (information) about a domain, which is used in an inferencing process as a means of implying new domain knowledge. This inferencing process is very efficiently used for the explanation how an answer to a user’s query was derived, increasing the trust of a user in the answers of the query. Moreover, such a derivation tree can be treated as an evidence of the relevance of an answer for the user’s query. In this paper we present an approach which combines the derivation tree with the factual information in order to support the ranking of the results of an ontology-based query. Moreover, we discuss the possibilities to use such a ranking for clustering query’s results. The approach has been implemented in the Ontobroker system, a main memory deductive database system.
author: id32instance
booktitle: DEXA 2003
has project: id32instance
is about: id68instance
month: September
pages: 167 - 175
title: An Explanation-based Ranking Approach for Ontology-based Querying
year: 2003

id405instance
type: Proceedings
type: Publication
abstract: Die INFORMATIK 2003 findet vom 29. September bis 2. Oktober 2003 an der Johann Wolfgang Goethe-Universität in Frankfurt am Main statt. Als 33. Jahrestagung der Gesellschaft für Informatik präsentiert sie traditionell das breite Spektrum aktueller Entwicklungen in der Informatik und versammelt Wissenschaftler wie Praktiker, die sich einen fundierten Überblick über die wichtigsten aktuellen Trends in der Informatik ver-schaffen möchten. Unter dem Gesamtthema "Innovative Informatikanwendungen" haben wir ein vielfälti-ges Programm aus Keynotes, Workshops und Symposien zusammengestellt, das einen breiten Überblick über das Spektrum der Informatik-Aktivitäten hierzulande gibt. Deutlich ist dabei zu erkennen, wie viele Anwendungsbereiche auf Informatikleistungen angewiesen sind, wie sehr beispielsweise der Raum Frankfurt als Finanz- und Dienstleistungszentrum, Verkehrsknotenpunkt sowie Standort von Telekommunikations-, IT-, Medien-, Automobil- und Chemieunternehmen von Informatik "durchdrungen" ist, und wie viel vom "Funktionieren der Informatik" abhängt. Um das Plenarprogramm mit Keynotes zur Eröffnung und zum "Tag der Informatik" wurden zahlreiche Workshops gruppiert, in denen in kleinerem Kreis spezielle Themen präsentiert und diskutiert werden. Aus einer größeren Zahl von eingereichten Vorschlägen für Workshops wurden besonders aktuelle Themen mit hoher zu erwartender Qualität vom Workshop-Programmkomitee selektiert. Für jeden der ausgewählten Workshops hat ein eigenes dezentrales Programmkomitee Einwerbung, Begutachtung und Auswahl der Beiträge übernommen. In den vorliegenden beiden Tagungsbänden sind die angenommenen Beiträge dokumentiert. Darüber hinaus enthalten die Tagungsbände Beiträge zu Symposien verschiedener DFG-Schwerpunktprogramme und DFG-Sonderforschungsbereiche aus der Informatik sowie weiterer Forschungsprojekte zu innovativen Informatikanwendungen. Nicht zu vergessen ist die Teiltagung "Mit Sicherheit Informatik", die ein beso…
address: Bonn
editor: id1876instance
editor: id258instance
editor: id259instance
editor: id260instance
editor: id261instance
month: September
note: Beiträge der 33. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 29.9.-2.10.2003 in Frankfurt am Main
series: GI-Edition - Lecture Notes in Informatics (LNI)
title: INFORMATIK 2003 - Innovative Informatikanwendungen
volume: P-34, Bd.1
year: 2003

id406instance
type: Proceedings
type: Publication
abstract: Die INFORMATIK 2003 findet vom 29. September bis 2. Oktober 2003 an der Johann Wolfgang Goethe-Universität in Frankfurt am Main statt. Als 33. Jahrestagung der Gesellschaft für Informatik präsentiert sie traditionell das breite Spektrum aktueller Entwicklungen in der Informatik und versammelt Wissenschaftler wie Praktiker, die sich einen fundierten Überblick über die wichtigsten aktuellen Trends in der Informatik ver-schaffen möchten. Unter dem Gesamtthema "Innovative Informatikanwendungen" haben wir ein vielfälti-ges Programm aus Keynotes, Workshops und Symposien zusammengestellt, das einen breiten Überblick über das Spektrum der Informatik-Aktivitäten hierzulande gibt. Deutlich ist dabei zu erkennen, wie viele Anwendungsbereiche auf Informatikleistungen angewiesen sind, wie sehr beispielsweise der Raum Frankfurt als Finanz- und Dienstleistungszentrum, Verkehrsknotenpunkt sowie Standort von Telekommunikations-, IT-, Medien-, Automobil- und Chemieunternehmen von Informatik "durchdrungen" ist, und wie viel vom "Funktionieren der Informatik" abhängt. Um das Plenarprogramm mit Keynotes zur Eröffnung und zum "Tag der Informatik" wurden zahlreiche Workshops gruppiert, in denen in kleinerem Kreis spezielle Themen präsentiert und diskutiert werden. Aus einer größeren Zahl von eingereichten Vorschlägen für Workshops wurden besonders aktuelle Themen mit hoher zu erwartender Qualität vom Workshop-Programmkomitee selektiert. Für jeden der ausgewählten Workshops hat ein eigenes dezentrales Programmkomitee Einwerbung, Begutachtung und Auswahl der Beiträge übernommen. In den vorliegenden beiden Tagungsbänden sind die angenommenen Beiträge dokumentiert. Darüber hinaus enthalten die Tagungsbände Beiträge zu Symposien verschiedener DFG-Schwerpunktprogramme und DFG-Sonderforschungsbereiche aus der Informatik sowie weiterer Forschungsprojekte zu innovativen Informatikanwendungen. Nicht zu vergessen ist die Teiltagung "Mit Sicherheit Informatik", die ein beso…
address: Bonn
editor: id1876instance
editor: id258instance
editor: id259instance
editor: id260instance
editor: id261instance
month: September
note: Beiträge der 33. Jahrestagung der Gesellschaft für Informatik e.V. (GI), 29.9.-2.10.2003 in Frankfurt am Main
series: GI-Edition - Lecture Notes of Informatics (LNI)
title: INFORMATIK 2003 - Innovative Informatikanwendungen
volume: P-35, Bd.2
year: 2003

id408instance
type: InProceedings
type: Publication
abstract: Ein Problem bestehender Lernobjekt-Managementsysteme ist die fehlende oder unzureichende Unterstützung der im E-Learning auftretenden Prozesse, d.h. Lehr-, Lern- und Administrationsprozesse. Die inhaltsorientierte Sichtweise von E-Learning wird daher um eine prozessorientierte Sichtweise des Lernobjekt-Managements ergänzt. Durch die Verwendung von XML-Netzen, einer neuen Variante höherer Petri-Netze, welche die integrierte Darstellung der Prozesse des Lernobjekt-Managements und komplexer Lernobjekte erlaubt, wird die Erweiterung einer E Learning-Plattform um ein Workflow-Managementsystem möglich. Nutzen aus der prozessorientierten Sichtweise kann insbesondere bei der Ablaufunterstützung und der Erfolgskontrolle gezogen werden. Durch die Modellierung von Prozessschemata können die Prozesse des Lernobjekt-Managements auch zwischen den Prozessbeteiligten, z.B. Lehrenden, Lernenden oder Administratoren, kommuniziert werden.
address: Heidelberg
author: id1876instance
author: id1954instance
author: id2058instance
author: id157instance
author: id246instance
booktitle: Wirtschaftsinformatik 2003, Medien - Märkte - Mobilität
pages: 801-818
title: Workflow-gestütztes Lernobjekt-Management
volume: Bd.1
year: 2003

id409instance
type: InCollection
type: Publication
author: id1876instance
author: id38instance
author: id248instance
author: id249instance
booktitle: Computer Science in Perspektive
edition: LNCS 2598
pages: 304-317
title: Information Technology Practitioner Skills in Europe: Current Status and Challenges for the Future
year: 2003

id40instance
type: InCollection
type: Publication
author: id50instance
author: id6instance
author: id23instance
booktitle: Web Intelligence
has project: id27instance
is about: id49instance
is about: id71instance
title: Ontology Learning Part One - On Discoverying Taxonomic Relations from the Web
year: 2002

id411instance
type: Article
type: Publication
abstract: The goal of IBM’s Autonomic Computing strategy is to deliver IT environments with improved self-management capabilities which cover the aspects of self-healing, self-protecting, self-optimizing, and self-configuring. Data correlation and inference technologies can be used as core components to build Autonomic Computing systems. They can be used to perform an automated, continuous analysis of enterprise-wide event data, based on user-defined, configurable rules, e.g. for detecting threats or system failures. Furthermore, they may trigger corrective actions for protecting or healing the system. In this paper, we discuss the use of ontologies as a high-level, expressive conceptual modelling approach for describing the knowledge on which the processing of a correlation engine is based upon. By introducing explicit models of state-based IT resources in the correlation technology approach, Autonomic Computing systems can be built which are able to deal with policy based goals on a higher abstraction level. We demonstrate some benefits of this approach by applying it to a particular IBM implementation, referred to as the “eAutomationâ€ correlation engine.
author: id50instance
author: id53instance
author: id57instance
author: id252instance
author: id253instance
author: id256instance
author: id257instance
author: id96instance
is about: id69instance
journal: IBM Systems Journal
month: August
number: No. 3
title: The Role of Ontologies in Autonomic Computing Systems
volume: Vol. 43
year: 2004

id412instance
type: InProceedings
type: Publication
abstract: Correlation engines are autonomic computing systems that perform the automated, continuous analysis of enterprise-wide event data based on user-defined, configurable rules in order to detect threats and protect a system from them. In this paper we discuss the run-time advantages of using ontologies as a conceptual backbone for describing knowledge processed by correlation engines.
author: id32instance
author: id57instance
author: id94instance
author: id96instance
booktitle: International Conference on Autonomic Computing (ICAC-04)
month: May
title: Ontology-based Correlation Engines
year: 2004

id413instance
type: InCollection
type: Publication
author: id11instance
author: id57instance
author: id67instance
author: id6instance
booktitle: Knowledge Engineering and Agent Technology
series: IOS Series on Frontiers in Artificial Intelligence and Applications
title: Situation and Perspective of Knowledge Engineering
volume: 52
year: 2003

id414instance
type: InProceedings
type: Publication
address: Berlin, Heidelberg
author: id19instance
author: id48instance
booktitle: Evolutionary Multi-Criterion Optimization, Second International Conference (EMO'03)
number: 2632
pages: 464-478
series: LNCS
title: Solving Multi-criteria Optimization Problems with Population-Based ACO
year: 2003

id415instance
type: InProceedings
type: Publication
abstract: We present the Web Service Description Framework (WSDF), which provides both a representation mechanism and a runtime system architecture for semantically enriched Web Services. We analyze existing languages such as BPEL4WS and OWL-S before addressing their deficiencies in our proposal. Our approach allows a client to invoke a service based solely on a shared ontology, i.e. without prior knowledge on the API, providing an important building block towards a global, flexible information infrastructure. Another main point is that WSDF can be applied to clients and services written in a conventional object oriented programming language. This is achieved by lifting datastructures to an ontology level in which rich logical statements about services can be formalized. We also present a detailed system architecture that covers planning, invocation, and the automatic processing of the service results, which is accomplished using the observer design pattern and by asserting the result in the respective model. Furthermore, the required annotations can be specified conveniently by placing comments in the source code.
author: id2065instance
booktitle: IEEE International Conference on Web Services (ICWS 2004)
has project: id32instance
has project: id38instance
has project: id43instance
has project: id49instance
has project: id50instance
has project: id51instance
is about: id119instance
month: July
title: Ad-hoc Invocation of Semantic Web Services
year: 2004

id418instance
type: InCollection
type: Publication
abstract: Due to the fast growth of internet based electronic business activities, languages for modeling as well as methods for analyzing and executing distributed business processes are becoming more and more important. Efficient inter-organizational business processes in the field of e-commerce require the integration of electronic document interchange and inter-organizational process management. We propose to support inter-organizational business processes by so-called XML nets, a new variant of high-level Petri nets. XML nets are a formal, graphical modeling language that allows to model both the flow of XML documents and the control flow of the underlying business process. XML nets are based on GXSL, a novel graphical XML schema definition language, and its related graphical XML document manipulation language XManiLa. They can be directly executed by a respective workflow engine. Advantage of the formal foundation of XML nets can be taken, e.g., when analyzing a (global) inter-organizational workflow model. XML nets support the identification of relevant process fragments and their allocation to the appropriate organizational units. Thus XML nets help to derive an improved, process-oriented organizational structure.
author: id1876instance
author: id1954instance
booktitle: Petri Net Technology for Communication-Based Systems, Advances in Petri Nets
is about: id12instance
pages: 243-263
series: LNCS
title: Interorganizational Business Process Management with XML Nets
volume: 2472
year: 2003

id419instance
type: InCollection
type: Publication
address: Wiesbaden
author: id1876instance
author: id2087instance
author: id263instance
booktitle: IT-Systeme im CRM
pages: 75-96
title: Wissensmanagement im CRM
year: 2004

id420instance
type: InCollection
type: Publication
address: Heidelberg
author: id1876instance
author: id1915instance
author: id157instance
booktitle: Web & Datenbanken
pages: S. 363 - 397
title: Web-basiertes Lernen: Eine Übersicht über Stand und Entwicklungen
year: 2003

id422instance
type: InCollection
type: Publication
abstract: Flexibilität, d.h. die Fähigkeit zur Anpassung an geänderte Umstände, gehört zu den wichtigsten Anforderungen, die an betriebliche Informationssysteme gestellt werden. Trotzdem verfügen Informationssysteme in der Praxis vielfach nur über unzureichende Möglichkeiten zur Anpassung bzw. erforderliche Änderungen sind oftmals nur mit unvertretbar hohem Aufwand möglich. Dieser Beitrag beleuchtet das Problem der Flexibilität, beschreibt Möglichkeiten zur Lösung und schlägt workflowbasierte Informationssysteme vor, um ein größtmögliches Maß an Flexibilität zu ermöglichen.
address: Bonn
author: id1876instance
author: id38instance
booktitle: Informationswirtschaft: Ein Sektor mit Zukunft
edition: GI-Edition
pages: S. 333 - 345
title: Flexibilität in betrieblichen Informationssystemen
year: 2003

id423instance
type: InProceedings
type: Publication
author: id79instance
author: id127instance
author: id82instance
booktitle: 1st Australian Workshop on Engineering Service-Oriented Systems (AWESOS 2004) Wednesday, 14 April 2004, Melbourne, Australia. In conjunction with the Australian Software Engineering Conference (ASWEC)
has project: id26instance
pages: 7-15
title: Enhancing Application Servers with Semantics
year: 2004

id424instance
type: InProceedings
type: Publication
author: id13instance
author: id6instance
author: id98instance
booktitle: Proceedings of the 13th WWW Conference
has project: id35instance
is about: id100instance
month: May
pages: 462-471
title: Towards the Self-Annotating Web
year: 2004

id425instance
type: InProceedings
type: Publication
author: id14instance
author: id51instance
author: id8instance
author: id98instance
booktitle: Proceedings of the The Second International Conference on Formal Concept Analysis (ICFCA 04)
pages: 189-207
title: Conceptual Knowledge Processing with Formal Concept Analysis and Ontologies
year: 2004

id426instance
type: InProceedings
type: Publication
author: id14instance
author: id6instance
author: id98instance
booktitle: Proceedings of the Conference on Lexical Resources and Evaluation (LREC)
has project: id35instance
is about: id71instance
month: May
pages: 1721-1724
title: Clustering Ontologies from Text
year: 2004

id427instance
type: InProceedings
type: Publication
abstract: XML ist auf dem Wege, sich zu einer Basistechnologie im Bereich der multimedialen Lehre zu entwickeln. Mit der zunehmenden Nutzung dieser Auszeichnungssprache ergeben sich jedoch auch neuartige Frage- und Problemstellungen bezüglich der Distribution XML-basierter Lehr- und Lernmodule und deren Integration in Learning-Management-Systeme. Der vorliegende Beitrag skizziert im ersten Teil die Anforderungen an ein Distributionssystem und diskutiert, welche Systeme für eine Distribution geeignet sind. Dabei werden die Ergebnisse einer Untersuchung vorgestellt, die im Rahmen des Verbundprojektes ‚Wissenswerkstatt Rechensysteme’ durchgeführt wurde. Im zweiten Teil des Beitrags wird auf die Problematik der Integration von Lehr- und Lernmodulen in Learning-Management-Systeme eingegangen und das als Lösungsansatz vorgestellte Sharable Content Object Reference Model SCORM) näher erläutert.
author: id29instance
author: id65instance
author: id40instance
booktitle: Structured eLearning: Wissenswerkstatt Rechensysteme
has project: id7instance
month: March
pages: 59-69
title: Strategien zur Distribution und Integration XML-basierter Lehr- und Lernmodule
year: 2004

id428instance
type: InProceedings
type: Publication
author: id65instance
author: id40instance
booktitle: structured eLearning: Wissenswerkstatt Rechensysteme
has project: id7instance
month: March
pages: 23-32
title: Mediendidaktische Aufbereitung von Vorlesungsinhalten für das Online-Lernen
year: 2004

id42instance
type: InCollection
type: Publication
author: id50instance
author: id6instance
author: id25instance
booktitle: Intelligent Exploration of the Web. Series - Studies in Fuzziness and Soft Computing
has project: id12instance
is about: id49instance
title: Bootstrapping an Ontology-based Information Extraction System for the Web
year: 2002

id430instance
type: InProceedings
type: Publication
author: id98instance
booktitle: Proceedings of the 9th International Conference on Applications of Natural Language to Information Systems
has project: id3instance
is about: id110instance
pages: 401-406
title: ORAKEL: A Natural Language Interface to an F-Logic Knowledge Base
year: 2004

id431instance
type: InProceedings
type: Publication
abstract: Current learning management systems often lack suffi-cient support for processes in e-learning, including teaching, learning, and administration processes. In this paper a new approach is presented for increasing the functionality of e-learning platforms by adding workflow-support. The use of a new variant of high-level Petri nets allows for an integrated description of complex learning objects and related processes. Advantages of workflow-based learning-object management can be seen especially for the customization and personalization of processes and the measurement of results, e.g., economic benefits.
address: Poznan, Poland
author: id1876instance
author: id1954instance
author: id2058instance
author: id2070instance
author: id2083instance
author: id157instance
booktitle: Business Information Systems, Proceedings of 7th BIS 2004
month: April
pages: 214-226
title: Individualization of E-Learning Processes by Workflow-Based Learning-Object Management
year: 2004

id432instance
type: InProceedings
type: Publication
author: id91instance
booktitle: Proceedings of 2nd International Conference on Web Services
has project: id32instance
has project: id38instance
has project: id51instance
month: July
title: Specification of Invocable Semantic Web Resources
year: 2004

id433instance
type: InProceedings
type: Publication
author: id91instance
author: id169instance
booktitle: Proceedings of 1st International Conference on Web Services
has project: id38instance
has project: id51instance
month: July
title: Access Control for Semantic Web Services
year: 2004

id434instance
type: Article
type: Publication
author: id50instance
author: id53instance
author: id5instance
journal: VLDB Journal
number: 4
pages: 286-302
title: Managing Multiple and Distributed Ontologies in the Semantic Web
volume: 12
year: 2003

id435instance
type: Proceedings
type: Publication
address: Berlin, Heidelberg, New York
editor: id1876instance
editor: id1966instance
editor: id1978instance
series: Lecture Notes in Computer Science
title: Business Process Management
volume: 1806
year: 2000

id436instance
type: Article
type: Publication
abstract: In this article we illustrate a methodology for introducing and maintaining ontology based knowledge management applications into enterprises with a focus on Knowledge Processes and Knowledge Meta Processes. While the former process circles around the usage of ontologies, the latter process guides their initial set up. We illustrate our methodology by an example from a case study on skills management.
author: id20instance
author: id57instance
author: id6instance
has project: id11instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
journal: SIGMOD Record
month: December
number: 4
pages: 18-23
title: Methodology for Development and Employment of Ontology Based Knowledge Management Applications.
volume: 31
year: 2002

id438instance
type: Proceedings
type: Publication
address: Bonn
editor: id1876instance
editor: id272instance
editor: id273instance
series: Lecture Notes in Informatics (LNI)
title: Modellierung 2001
volume: P-1
year: 2001

id439instance
type: Proceedings
type: Publication
address: Wien
editor: id1876instance
editor: id274instance
editor: id275instance
editor: id276instance
title: Software-Management 2000
volume: 149
year: 2000

id43instance
type: InProceedings
type: Publication
abstract: Ontologging is an ontology-driven environment to enable next generation knowledge management applications building on Semantic Web technology. In this paper we first present the conceptual architecture underlying Ontologging. Second, we focus on two important challenges for ontology-based knowledge management, namely the supporting multiple ontologies and managing ontology evolution. We will provide a general approach for handling these two essential issues within the Ontologging architecture.
author: id40instance
author: id50instance
author: id53instance
author: id57instance
author: id5instance
booktitle: Proceedings of the Conference on Intelligent Information Processing, World Computer Congress 2002, Montreal, Canada
is about: id103instance
is about: id104instance
title: Managing Multiple Ontologies and Ontology Evolution in Ontologging
year: 2002

id440instance
type: InProceedings
type: Publication
abstract: The existing European IT skills gap is one of the biggest challenges for ICT industry during the next years. Industry, governmental bodies, and educational bodies have to intensify their co-operation and join forces to narrow the existing IT skills gap and to reduce the IT skills shortage in industry. Especially small and medium-sized enterprises (SMEs) mostly feel the increasing pressure on their future business due to a lack of available IT practitioners with the needed skills to enhance their electronic business, products and services. In this paper we discuss the terms IT skills gap and shortage and introduce an IT Competence Maturity Model as a mean to discuss and plan identified present and required future activities and measures. The model differentiates between existing qualification and certification schemes by qualification levels. The model intends to foster the understanding and to facilitate a more precise discussion of the current IT-skills situation in Europe.
author: id2062instance
author: id2073instance
author: id38instance
author: id249instance
booktitle: eEurope - IT Skills: Challenging Europe's Economic Future
month: April
note: Workshop Proceedings eChallenges e-2003 Conference
pages: 9-19
title: Filling IT-Skills Gap and Shortage
year: 2004

id441instance
type: InProceedings
type: Publication
abstract: Ontology mapping is important when working with more than one ontology. Typically similarity considerations are the basis for this. In this paper an approach to integrate various similarity methods is presented. In brief, we determine similarity through rules which have been encoded by ontology experts. These rules are then combined for one overall result. Several boosting small actions are added. All this is thoroughly evaluated with very promising results.
address: Heraklion, Greece
author: id20instance
author: id80instance
booktitle: Proceedings of the First European Semantic Web Symposium
has project: id30instance
has project: id42instance
has project: id49instance
is about: id104instance
is about: id49instance
is about: id51instance
is about: id55instance
is about: id79instance
month: May
pages: 76-91
series: Lecture Notes in Computer Science
title: Ontology Mapping - An Integrated Approach
volume: 3053
year: 2004

id442instance
type: InProceedings
type: Publication
address: Heraklion, Crete, Greece
author: id20instance
author: id6instance
author: id83instance
author: id277instance
booktitle: First European Semantic Web Symposium, {ESWS 2004}
has project: id30instance
has project: id42instance
has project: id49instance
is about: id104instance
is about: id123instance
is about: id29instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
is about: id98instance
month: May
pages: 16-30
series: LNCS
title: OntoEdit Empowering SWAP: a Case Study in Supporting DIstributed, Loosely-Controlled and evolvInG Engineering of oNTologies (DILIGENT)
volume: 3053
year: 2004

id443instance
type: InProceedings
month: May
title: The Semantic Web: Research and Applications
year: 2004

id444instance
type: Article
type: Publication
abstract: Identifying and presenting useful information for a given context is an important challenge for research and development of Web technologies.Providing access to information for humans and machines is one of the main motivations for the Semantic Web. Our contribution to the 2003 Semantic Web Grand Challenge realizes semantic-based search and access facilities to information represented by semantic portals. Such portals typically provide knowledge about a specific domain and rely on ontologies to structure and exchange this knowledge. Computer science exploits ontologies to enhance knowledge sharing and reuse. First, ontologies provide a common, shared understanding of knowledge in an interest domain. Second, they capture and formalize knowledge by connecting human understanding of symbols with their machine processability. As such, ontologies play a key role for realizing the Semantic Web. Our contribution extends and implements the basic conceptual framework SEAL (SEmantic portAL) with the aim of using semantic technologies in real-world scenarios through a reliable, scalable infrastructure. We also show how multiple semantic portals can interact with one another to exchange knowledge, thus fostering reuse. The building blocks of our extension include knowledge integration, processing, representation, organization, and access. Our approach has these benefits: (i) Significant reduction of content maintenance overhead, (ii) knowledge accessibility for both human and machine agents, atop existing information sources, and (iii) suitability for productive environments.
author: id20instance
author: id90instance
has project: id10instance
has project: id58instance
journal: IEEE Intelligent Systems
month: May
number: 3
pages: 58-65
title: An Infrastructure for Scalable, Reliable Semantic Portals
volume: 19
year: 2004

id445instance
type: Article
type: Publication
author: id19instance
author: id29instance
author: id3instance
author: id33instance
author: id34instance
author: id36instance
author: id37instance
has project: id41instance
is about: id22instance
is about: id33instance
is about: id47instance
is about: id5instance
is about: id65instance
is about: id73instance
is about: id75instance
is about: id77instance
journal: Applied Soft Computing
month: April
pages: 303-322
title: FPGA Implementation of Population-based Ant Colony Optimization
volume: 4
year: 2004

id446instance
type: InProceedings
type: Publication
address: Toulouse, France
author: id2043instance
author: id2044instance
author: id38instance
booktitle: The Symposium on Professional Practice in AI, IFIP WG12.5 - First IFIP Conference on Artificial Intelligence Applications and Innovations (AIAI)
is about: id101instance
is about: id136instance
is about: id20instance
is about: id99instance
month: August
title: Retrieving Content with Agents in Web Service E-Learning Systems
year: 2004

id447instance
type: InProceedings
type: Publication
address: New York, USA
author: id6instance
author: id83instance
author: id278instance
booktitle: Proceedings of the 13th International World Wide Web Conference (WWW 2004)
has project: id30instance
is about: id123instance
is about: id68instance
is about: id79instance
is about: id97instance
month: May
pages: 640-649
title: REMINDIN': Semantic Query Routing in Peer-to-Peer Networks Based on Social Metaphors
year: 2004

id448instance
type: InProceedings
type: Publication
author: id2023instance
author: id80instance
author: id125instance
author: id279instance
author: id280instance
author: id281instance
author: id81instance
author: id83instance
booktitle: Proceedings of the WWW'04 Workshop on Semantics in Peer-to-Peer and Grid Computing
has project: id30instance
has project: id54instance
has project: id55instance
is about: id123instance
month: May
title: Bibster - A Semantics-Based Bibliographic Peer-to-Peer System
year: 2004

id449instance
type: InProceedings
type: Publication
author: id2023instance
author: id279instance
author: id83instance
booktitle: International Conference on Semantics of a Networked World: Semantics for Grid Databases, 2004, Paris
title: Peer Selection in Peer-to-Peer Networks with Semantic Topologies
year: 2004

id44instance
type: InProceedings
type: Publication
abstract: Community web sites exhibit the property that multiple content providers exist. Of course, any portal is only as useful as the quality and amount of its content. Developing original content is time consuming and expensive. To offset the cost, we present a novel framework, viz. SEAL (SEmantic portAL), that builds on Semantic Web standards. We illustrate our approach with examples from the OntoWeb community portal. Community web sites exhibit two dominating properties: They often need to integrate many different information sources and they require an adequate web site management system. SEAL exploits ontologies for fulfilling the requirements set forth by these two properties. Ontologies provide a high level of sophistication for web information integration as well as for web site management.
author: id20instance
author: id40instance
author: id57instance
booktitle: Proceedings of International Conference on Knowledge Management 2002 (I-KNOW'02) , July 11-12 2002, Graz, Austria
has project: id10instance
is about: id52instance
is about: id68instance
is about: id79instance
title: Managing User Focused Access to Distributed Knowledge.
year: 2002

id450instance
type: InProceedings
type: Publication
author: id14instance
author: id6instance
author: id98instance
booktitle: Proceedings of the European Conference on Artificial Intelligence (ECAI'04)
has project: id35instance
is about: id71instance
pages: 435-439
title: Comparing Conceptual, Partitional and Agglomerative Clustering for Learning Taxonomies from Text
year: 2004

id452instance
type: InProceedings
type: Publication
author: id40instance
author: id6instance
author: id79instance
booktitle: The Thirteenth International World Wide Web Conference Alternate Track Papers & Posters
has project: id28instance
month: May
pages: 220-221
title: An Application Server for the Semantic Web
year: 2004

id453instance
type: InProceedings
type: Publication
author: id2065instance
author: id40instance
author: id6instance
author: id79instance
booktitle: Proceedings of the WWW2004 Workshop on Application Design, Development and Implementation Issues in the Semantic Web, New York, NY, USA, May 18, 2004
has project: id28instance
month: May
title: Developing and Managing Software Components in an Ontology-based Application Server
volume: 105
year: 2004

id454instance
type: Article
type: Publication
abstract: The Semantic Web relies heavily on the formal ontologies that structure underlying data for the purpose of comprehensive and transportable machine understanding. Therefore, the success of the Semantic Web depends strongly on the proliferation of ontologies, which requires fast and easy engineering of ontologies and avoidance of a knowledge acquisition bottleneck. Ontology Learning greatly facilitates the construction of ontologies by the ontology engineer. The vision of ontology learning that we propose here includes a number of complementary disciplines that feed on different types of unstructured, semi-structured and fully structured data in order to support a semi-automatic, cooperative ontology engineering process. Our ontology learn-ing framework proceeds through ontology import, extraction, pruning, refinement, and evaluation giving the ontology engineer a wealth of coordinated tools for ontology modeling. Besides of the general framework and architecture, we show in this paper some exemplary techniques in the ontology learning cycle that we have implemented in our ontology learning environment, Text-To-Onto, such as ontology learning from free text, from dictionaries, or from legacy ontologies, and refer to some others that need to complement the complete architecture, such as reverse engineering of ontologies from database schemata or learning from XML documents.
author: id50instance
author: id6instance
journal: IEEE Intelligent Systems
month: March
note: Special Issue on Semantic Web
number: 2
title: Ontology Learning for the Semantic Web
volume: 16
year: 2001

id455instance
type: Proceedings
type: Publication
editor: id20instance
editor: id57instance
editor: id60instance
editor: id6instance
editor: id8instance
month: March
title: Professionelles Wissensmanagement - Erfahrungen und Visionen (Proceedings), Baden-Baden 14.-16. März 2001
year: 2001

id456instance
type: InProceedings
type: Publication
abstract: Standards in e-learning have been developed to support authoring, assembly, and execution of learning objects. Due to the fact that until now e learning is mainly applied in academic teaching, pricing of learning objects still plays a minor role in current research. So far, standards for learning objects lack concepts for the integration of prices. In this paper, we present an approach to support pricing of e-learning objects on different abstraction levels. The approach is based on combining price models and learning objects by extending the learning objects' XML metadata on the one hand and on the representation of processes as exchanges and manipulations of XML documents on the other hand. Consideration of price models in a workflow-based learning-object management system thus allows for explicitly modeling processes for pricing such as price negotiations between learners and learning object providers or mediators. Moreover, pricing processes can be integrated into learning, teaching, and administration processes and thereby enhance the cooperation of all participating actors.
author: id1876instance
author: id1954instance
author: id2083instance
booktitle: Proc. Hawaii International Conference on System Sciences, HICSS-38
has project: id47instance
is about: id106instance
is about: id117instance
is about: id124instance
is about: id20instance
is about: id24instance
is about: id25instance
is about: id41instance
is about: id56instance
is about: id57instance
is about: id61instance
is about: id9instance
month: January
title: Pricing of Learning Objects in a Workflow-based E-Learning Scenario
year: 2005

id457instance
type: Article
type: Publication
abstract: Dieser Beitrag gibt eine Übersicht über Informationen im WWW zum Thema Web Engineering und ist wie folgt gegliedert: Zunächst werden in typische Probleme bei der Entwicklung von Webanwendungen dargestellt. Im zweiten Kapitel folgen Methoden und Werkzeuge des Web Engineering, die Lösungen für einen Teil der geschilderten Probleme bieten. Im dritten Kapitel beleuchten wir aktuelle Trends im Web Engineering.
author: id2083instance
author: id282instance
is about: id100instance
is about: id85instance
journal: Wirtschaftsinformatik
month: March
number: 3
title: Web Engineering
volume: 44
year: 2002

id458instance
type: InProceedings
type: Publication
author: id1876instance
author: id1954instance
author: id2058instance
author: id2070instance
author: id2083instance
author: id157instance
booktitle: Wirtschaftsinformatik 2003: Medien - Märkte - Mobilität
has project: id47instance
is about: id100instance
is about: id106instance
is about: id124instance
is about: id125instance
is about: id20instance
is about: id41instance
is about: id56instance
is about: id57instance
month: September
pages: 801-818
title: Workflow-gestütztes Lernobjekt-Management
volume: 1
year: 2003

id459instance
type: InProceedings
type: Publication
author: id2065instance
author: id40instance
author: id6instance
author: id79instance
booktitle: Middleware 2004, ACM/IFIP/USENIX 5th International Middleware Conference, Toronto, Ontario, Canada
has project: id26instance
has project: id28instance
has project: id50instance
is about: id135instance
is about: id69instance
pages: 459-478
series: LNCS
title: Developing and Managing Software Components in an Ontology-based Application Server
volume: 3231
year: 2004

id45instance
type: Proceedings
type: Publication
abstract: In the Evaluation of Ontology-based Tools workshop we intend to bring together researchers and practitioners from the fastly developing research areas Ontologies and Semantic Web. Currently the semantic web attracts researchers from all around the world. Numerous tools and applications of semantic web technologies are already available and the number is growing fast. However, deploying large scale ontology solutions typically involves several separate tasks and requires applying multiple tools. Therefore pragmatic issues such as interoperability are key if industry is to be encouraged to take up ontology technology rapidly. The main aim of this workshop is therefore to encourage and stimulate discussions about the evaluation of ontology-based tools. The large visibility of the semantic web, it’s tools and applications already attracts industrial partners, e.g. in numerous projects funded by the European Commission. In particular, as tools move from academic institutions into commercial environments they have to fulfil stronger requirements and in some cases new requirements (e.g. concerning scalability and multi-user access). Different tools from different sources need to interoperate. Typically tools are not anymore standalone solutions but integrated into a framework. This framework must be open to other commercial applications and provide connectors and interfaces to industrial standards. Larger applications need also larger ontologies and therefore require substantially more performance and scalability. A systematic evaluation of the tools might lead to a consistent level of quality and thus acceptance by industry. For the future this might lead into certification efforts for such tools.
editor: id20instance
editor: id41instance
has project: id10instance
has project: id11instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
month: September
title: 1st Workshop on Evaluation of Ontology-based Tools (EON2002), Siguenza (Spain), 30th September 2002
volume: 62
year: 2002

id460instance
type: InProceedings
type: Publication
abstract: The Bibster system is an application of the use of semantics in Peer-to-Peer systems, which is aimed at researchers that share bibliographic metadata. In this paper we describe the design and implementation of recommender functionality in the Bibster system which allows personalized access to the bibliographic metadata available in the Peer-to-Peer network. These functions are based on a semantic user profile which is created from content and usage information as well as a similarity function. Furthermore, these functions make use of the semantic topology of the Peer-to-Peer system.
author: id14instance
author: id2023instance
author: id2067instance
author: id80instance
booktitle: Proceedings of the AAAI Workshop on Semantic Web Personalization, 2004
has project: id30instance
is about: id117instance
month: July
pages: 1-12
title: Personalized Information Access in a Bibliographic Peer-to-Peer System
year: 2004

id461instance
type: InProceedings
type: Publication
author: id2023instance
author: id91instance
booktitle: Proceedings of Semantische Technologien für Informationsportale, Informatik04
has project: id32instance
has project: id51instance
month: September
title: Process-Based Integration of Heterogeneous Information Sources
year: 2004

id462instance
type: InProceedings
type: Publication
author: id2065instance
author: id2078instance
author: id91instance
author: id285instance
author: id96instance
booktitle: INFORMATIK 2004 - Informatik verbindet, Band 2, Proceedings of Semantic Web Services and Dynamic Networks
has project: id38instance
has project: id39instance
has project: id51instance
month: September
pages: 579-583
series: LNI
title: Ontology Based Specification of Web Service Policies
volume: 51
year: 2004

id463instance
type: Article
type: Publication
author: id2instance
author: id43instance
is about: id24instance
is about: id25instance
journal: Handel im Fokus
month: February
number: 1-2004
pages: 17-30
title: Der Handel bei eBay.de
year: 2004

id464instance
type: InProceedings
type: Publication
address: Graz, Austria
author: id20instance
author: id6instance
author: id83instance
author: id277instance
booktitle: Proceedings of the 4th International Conference on Knowledge Management (I-KNOW'04)
has project: id30instance
has project: id42instance
has project: id49instance
is about: id102instance
is about: id103instance
is about: id123instance
is about: id29instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id98instance
month: June
pages: 225-232
title: A case study in supporting DIstributed, Loosely-Controlled and evolvInG Engineering of oNTologies (DILIGENT)
year: 2004

id465instance
type: InProceedings
type: Publication
address: Graz, Austria
author: id6instance
author: id76instance
author: id83instance
booktitle: Proceedings of the 4th International Conference on Knowledge Management (I-KNOW'04)
has project: id27instance
has project: id30instance
has project: id42instance
has project: id49instance
is about: id123instance
is about: id68instance
is about: id97instance
is about: id98instance
month: June
pages: 35-42
title: Socialisation in Peer-to-Peer Knowledge Management
year: 2004

id466instance
type: InProceedings
type: Publication
author: id41instance
author: id6instance
author: id286instance
author: id287instance
author: id288instance
author: id289instance
author: id290instance
author: id291instance
author: id292instance
author: id293instance
author: id294instance
author: id295instance
author: id296instance
booktitle: Proceedings of the Conference on Knowledge Representation and Reasoning - KR-2004
has project: id3instance
is about: id105instance
is about: id53instance
is about: id55instance
is about: id61instance
is about: id70instance
month: June
pages: 507-515
title: Towards a Quantitative, Platform-Independent Analysis of Knowledge Systems
year: 2004

id467instance
type: InProceedings
type: Publication
author: id6instance
author: id23instance
author: id297instance
booktitle: Proceedings of the 20th Conference on Computational Linguistics, COLING-2004
has project: id30instance
has project: id35instance
is about: id15instance
is about: id49instance
is about: id71instance
month: August
title: Feature Weighting for Co-occurrence-based Classification of Words
year: 2004

id468instance
type: Article
type: Publication
author: id41instance
author: id6instance
author: id183instance
author: id184instance
author: id287instance
author: id288instance
author: id290instance
author: id291instance
author: id292instance
author: id294instance
author: id296instance
author: id298instance
author: id299instance
author: id300instance
author: id301instance
author: id302instance
author: id303instance
author: id304instance
author: id3instance
author: id59instance
has project: id3instance
is about: id105instance
is about: id129instance
is about: id17instance
is about: id53instance
is about: id55instance
is about: id58instance
is about: id69instance
is about: id70instance
journal: AI Magazine
title: Project Halo: Towards a Digital Aristotle
year: 2004

id469instance
type: Proceedings
type: Publication
editor: id8instance
editor: id307instance
month: July
title: Conceptual Structures: Broadening the Base, Proc. ICCS 2001
year: 2001

id470instance
type: Article
type: Publication
abstract: Recently, the idea of semantic portals on the Web or on the intranet has gained pop-ularity. Their key concern is to allow a community of users to present and share knowledge in a particular (set of) domain(s) via semantic methods. Thus, semantic portals aim at creating high-quality access - in contrast to methods like information retrieval or document clustering that do not exploit any semantic background knowledge at all. However, by way of this construction semantic portals may easily suffer from a typical knowledge management problem. Their initial value is low, because only little richly structured knowledge is available. Hence the motivation of its potential users to extend the knowledge pool is small, too. We here present SEAL-II, a methodology for semantic portals that extends its previous version, by providing a range of ontology-based means for hitting the soft spot between unstructured knowledge, which virtually comes for free, but which is of little use, and richly structured knowledge, which is expensive to gain, but of tremendous possible value. Thus, we give the portal builder tools and techniques in an overall framework to start the knowledge process at a semantic portal. SEAL-II takes advantage of the ontology in order to initiate the portal with knowledge, which is more usable than unstructured knowledge, but cheaper than richly structured knowledge.
author: id14instance
author: id50instance
author: id57instance
author: id6instance
journal: Journal of Universal Computer Science
title: SEAL-II -The soft spot between richly structured and unstructured knowledge
year: 2001

id471instance
type: Article
type: Publication
abstract: Problem-solving methods provide reusable architectures and components for implementing the reasoning part of knowledge-based systems. The Unified Problem-solving Method description Language UPML has been developed to describe and implement such architectures and components to facilitate their semiautomatic reuse and adaptation. In a nutshell, UPML is a framework for developing knowledge-intensive reasoning systems based on libraries of generic problem-solving components. The paper describes the components and adapters, architectural constraints, development guidelines, and tools provided by UPML. UPML is developed as part of the IBROW project which provides an internet-based brokering service for reusing problem-solving methods.
author: id11instance
author: id57instance
author: id67instance
author: id174instance
author: id176instance
author: id180instance
author: id308instance
author: id309instance
author: id310instance
author: id311instance
author: id312instance
author: id64instance
author: id7instance
journal: Knowledge and Information Systems (KAIS)
title: The Unified Problem-solving Method Development Language UPML
year: 2001

id472instance
type: Article
type: Publication
abstract: In diesem Artikel wird dargestellt, wie Verfahren aus der Wissensrepräsentation, der Computerlinguistik, dem Information Retrieval und aus dem Bereich Datenbanken eingesetzt werden können, um für Suchmaschinen und in Dokumen tenserver neue Funktionalitäten bereitzustellen.
author: id50instance
author: id57instance
author: id6instance
author: id313instance
author: id314instance
author: id315instance
author: id316instance
author: id317instance
author: id318instance
author: id319instance
author: id320instance
author: id321instance
journal: Datenbank-Spektrum
number: 1
pages: 14-24
title: GETESS – Ontologien, objektrelationale Datenbanken und Textanalyse als Bausteine einer semantischen Suchmaschine
volume: 1
year: 2001

id473instance
type: Article
type: Publication
abstract: In this paper a new approach towards temporal reasoning is presented that scales up from the temporal relations commonly used in Allen's qualitative interval calculus and in quantitative temporal constraint satisfaction problems to include interval relations with distances, temporal rules and other non-binary relations into the reasoning scheme. For this purpose, we generalize well-known methods for constraint propagation, determination of consistency and computation of the minimal network from simpler schemes that only allow for binary relations. Thereby, we and that levels of granularity play a major role for applying these techniques in our more expressive framework. Indeed, the technical preliminaries we provide are especially apt to investigate the switching between different granularities of representation, hence illucitating and exploiting the tradeoff between expressiveness and efficiency of temporal reasoning schemes on the one side and between expressiveness and understandability on the other side.
author: id6instance
journal: Artificial Intelligence, Elsevier
title: From Binary Temporal Relations to Non-Binary Ones and Back
year: 2001

id474instance
type: Article
type: Publication
abstract: Semantic Annotation is a basic technology for intelligent content and is beneficial in a wide range of content-oriented intelligent applications. In this paper we present our work in ontology-based semantic annotation, which is embedded in a scenario of a knowledge portal application. Starting with seemingly good and bad manual semantic annotation, we describe our experiences made within the KA2-initiative. The experiences gave us the starting point for developing an ergonomic and knowledge base-supported annotation tool. Furthermore, the annotation tool described are currently extended with mechanisms for semi-automatic information-extraction based annotation. Supporting the evolving nature of semantic content we additionally describe our idea of evolving ontologies supporting semantic annotation.
author: id34instance
author: id50instance
author: id60instance
author: id6instance
journal: ETAI Journal - Section on Semantic Web (Linköping Electronic Articles in Computer and Information Science)
number: 2
title: From Manual to Semi-automatic Semantic Annotation: About Ontology-based Text Annotation Tools
volume: 6
year: 2001

id475instance
type: Article
type: Publication
abstract: Technology for knowledge management has so far focused on the management of knowledge containers. We present an approach that is oriented towards managing knowledge contents instead by identifying knowledge items at various levels of formality. This is done by providing various types of meta data that are tied to ontologies for conceptual interlinkage. Knowledge items are embedded into knowledge processes, which are supported by a suite of ontology-based tools. In order to handle this sort of rich knowledge process, we introduce a meta process that puts special emphasis on constructing and maintaining the ontology when introducing knowledge management systems. In order to elucidate our approach, we describe a case study about the building of CHAR, the Corporate History Analyzer.
author: id20instance
author: id57instance
author: id60instance
author: id6instance
has project: id11instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id150instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
journal: IEEE Intelligent Systems
month: January
note: Special Issue on Knowledge Management.
number: 1
pages: 26-34
title: Knowledge Processes and Ontologies
volume: 16
year: 2001

id476instance
type: Article
type: Publication
abstract: Knowledge portals provide views onto domain-specific information on the World Wide Web, thus facilitating their users to find relevant, domain-specific information. The construction of intelligent access and the provisioning of information to knowledge portals, however, remained an ad hoc task requiring extensive manual editing and maintenance by the knowledge portal providers. In order to diminish these efforts we use ontologies as a conceptual backbone for providing, accessing and structuring information in a comprehensive approach for building and maintaining knowledge portals. We present one research and one commercial case study that show how our approach is used in practice.
author: id50instance
author: id6instance
journal: AI Magazine
number: 2
title: Knowledge Portals - Ontologies at Work (Draft Version)
volume: 21
year: 2001

id477instance
type: Article
type: Publication
author: id6instance
journal: Karlsruher Transfer
title: Semantic Web - Das Web der nächsten Generation
volume: 15
year: 2001

id478instance
type: Article
type: Publication
abstract: * Ontologien sind formale Modelle einer Anwendungsdomäne, die dazu dienen den Austausch und das Teilen on Wissen zu erleichtern [5] Auf der methodischen Seite werden Techniken der objektorientierten Modellierung konsequent so weiterentwickelt, dass die Modelle nicht bloß im Verborgenen zur Strukturierung on Software dienen, sondern auch ein explizites Element der Benutzerschnittstelle darstellen und zur Laufzeit verwendet werden Auf der soziokulturellen Seite erfordern Ontologien daher die Einigung einer Gruppe von Anwendern auf die jeweiligen Begriffe und deren Zusammenhänge.
author: id50instance
author: id57instance
author: id6instance
journal: Wirtschaftsinformatik
title: Stichwort Ontologien
year: 2001

id479instance
type: InProceedings
type: Publication
abstract: The core idea of the Semantic Web is to make information accessible to human and software agents on a semantic basis. Hence, Web sites may feed directly from the Semantic Web exploiting the underlying structures for human and machine access. We have developed a domain-independent approach for developing semantic portals, viz. SEAL (SEmantic portAL), that exploits semantics for providing and accessing information at a portal as well as constructing and maintaining the portal. In this paper we focus on semantics-based means that make semantic Web sites accessible from the outside, i.e. semantics-based browsing, semantic querying, querying with semantic similarity, and machine access to semantic information. In particular, we focus on methods for acquiring and structuring community information as well as methods for sharing information. As a case study we refer to the AIFB portal - a place that is increasingly driven by Semantic Web technologies. We also discuss lessons learned from the ontology development of the AIFB portal.
author: id20instance
author: id32instance
author: id50instance
author: id57instance
author: id6instance
booktitle: K-CAP 2001 - First Intenational Conference on Knowledge Capture, Victoria, Canada, Oct. 21-23, 2001
title: SEAL - A Framework for Developing SEmantic portALs
year: 2001

id480instance
type: InProceedings
type: Publication
abstract: The core idea of the Semantic Web is to make information accessible to human and software agents on a semantic basis. Hence, web sites may feed di-rectly from the Semantic Web exploiting the underlying structures for human and machine access. We have developed a generic approach for developing seman-tic portals, viz. SEAL (SEmantic portAL), that exploits semantics for providing and accessing information at a portal as well as constructing and maintaining the portal. In this paper, we discuss the role that semantic structures make for establishing communication between different agents in general. We elaborate on a number of intelligent means that make semantic web sites accessible from the outside, viz. semantics-based browsing, semantic querying and querying with semantic similarity, and machine access to semantic information at a semantic portal. As a case study we refer to the AIFB web site a place that is increasingly driven by Semantic Web technologies.
author: id20instance
author: id32instance
author: id50instance
author: id57instance
author: id6instance
booktitle: BNCOD 2001 - 18th British National Conference on Databases, Oxford, UK, 9th - 11th July 2001
title: SEAL - A Framework for Developing SEmantic portALs
year: 2001

id481instance
type: InProceedings
type: Publication
abstract: eLearning is efficient, task relevant and just-in-time learning grown from the learning-requirements of the new, dynamically changing, distributed business world. The term ?Semantic Web? encompasses efforts to build a new WWW architecture that enhances content with formal semantics, which enables better possibilities for navigating through the cyberspace and accessing its contents. As such, the Semantic Web represents a promising technology for realizing eLearning requirements. This paper presents an approach for implementing the eLearning scenario using Semantic Web technologies. It is primarily based on ontology-based descriptions of content, context and structure of the learning materials and thus provides flexible and personalized access to these learning materials.
author: id53instance
author: id57instance
author: id6instance
booktitle: WebNet2001, World Conference on the WWW and Internet, October 23-27, 2001, Orlando, Florida, USA
title: eLearning based on the Semantic Web
year: 2001

id482instance
type: InProceedings
type: Publication
abstract: In database marketing, the behavior of customers is ana- lyzed by studying the transactions they have performed. In order to get a global picture of the behavior of a customer, his single transactions have to be composed together. In On-Line Analytical Processing, this operation is known as reverse pivoting. With the ongoing data analysis process, reverse pivoting has to be repeated several times, usually requir- ing an implementation in SQL. In this paper, we present a construction for conceptual scales for reverse pivoting in Conceptual Information Sys- tems, and also discuss the visualization. The construction allows the reuse of previously created queries without reprogramming and offers a visualization of the results by line diagrams.
author: id8instance
author: id86instance
booktitle: Conceptual Structures: Broadening the Base. Proc. ICCS '01
pages: 202-215
title: Reverse Pivoting in Conceptual Information Systems
year: 2001

id483instance
type: InProceedings
type: Publication
abstract: Ontologies have been established for knowledgesharing and are widely used as a means for con-ceptually structuring domains of interest. Withthe growing usage of ontologies, the problem of overlapping knowledge in a common domain be-comescritical. We propose the new method FCA-MERGE for merging ontologies following a bottom-up approach which offers a structural de-scription of the merging process. The method is guided by application-specific instances of the given source ontologies, that are to be merged. We apply techniques from natural language processing and formal concept analysis to derive a lattice of concepts as a structural result of FCA-MERGE. The generated result is then explored and trans-formed into the merged ontology with human in-teraction.
author: id50instance
author: id8instance
booktitle: Proc. 17th Intl. Conf. on Artificial Intelligence (IJCAI '01), Seattle, WA, USA
pages: 225-230
title: FCA-Merge: Bottom-Up Merging of Ontologies
year: 2001

id484instance
type: InProceedings
type: Publication
abstract: Association rules are used to investigate large databases. The analyst is usually confronted with large lists of such rules and has to find the most relevant ones for his purpose. Based on results about knowledge representation within the theoretical framework of Formal Concept Anal- ysis, we present relatively small bases for association rules from which all rules can be deduced. We also provide algorithms for their calculation.
author: id8instance
author: id87instance
author: id88instance
author: id89instance
author: id90instance
booktitle: KI 2001: Advances in Artificial Intelligence. Proc. KI 2001
pages: 335-350
title: Intelligent Structuring and Reducing of Association Rules with Formal Concept Analysis
year: 2001

id485instance
type: InProceedings
type: Publication
abstract: Ontologies provide explicit models of shared conceptualiza- tions, and are useful for modeling formal, semi-formal, and informal knowledge needed for communication within a company. As there is typ- ically more than one ontology used in a company (for instance one in each department), techniques are needed to merge ontologies in order to assure cross-company communication. In this paper, we summarize one such approach, called FCA{Merge. During its development, it turned out that a formal definition of `ontology' is needed. The resulting defini- tion is presented for the first time in detail in this paper.
author: id8instance
booktitle: Proc. Referenzmodellierung 2001
title: Using Ontologies and Formal Concept Analysis for Organizing Business Knowledge
year: 2001

id486instance
type: InProceedings
type: Publication
abstract: Text clustering typically involves clustering in a high dimensional space, which appears difficult with regard to virtually all practical settings. In addition, given a particular clustering result it is typically very hard to come up with a good explanation of why the text clusters have been constructed the way they are. In this paper, we propose a new approach for applying background knowledge during preprocessing in order to improve clustering results and allow for selection between results. We built various views basing our selection of text features on a heterarchy of concepts. Based on these aggregations, we compute multiple clustering results using K-Means. The results may be distinguished and explained by the corresponding selection of concepts in the ontology. Our results compare favourably with a sophisticated baseline preprocessing strategy.
author: id14instance
author: id50instance
author: id6instance
booktitle: Proc. of IJCAI 2001
note: Workshop "Text Learning: Beyond Supervision"
title: Ontology-based Text Clustering
year: 2001

id488instance
type: InProceedings
type: Publication
abstract: The Semantic Web relies heavily on the formal ontologies that structure underlying data for the purpose of compre- hensive and transportable machine understanding. There- fore, the success of the Semantic Web depends strongly on the proliferation of ontologies, which requires fast and easy engineering of ontologies and avoidance of a knowledge ac- quisition bottleneck. Ontology Learning greatly facilitates the construction of ontologies by theontology engineer. The vision of ontology learning that we propose here includes a number of comple- mentary disciplines that feed on dierent types of unstruc- tured, semi-structured and fully structured data in order to support a semi-automatic, cooperative ontology engineering process. Our ontology learning framework proceeds through ontology import, extraction, pruning, renement, and eval- uation giving the ontology engineer a wealth of coordinated tools for ontology modeling. Besides of the general frame- work and architecture, we show in this paper some exem- plary techniques in the ontology learning cycle that we have implemented in our ontology learning environment, Text- To-Onto, such asontology learning from free text, from dic- tionaries, or from legacy ontologies, and refer to some others that need to complement the complete architecture, such as reverse engineering of ontologies from database schemata or learning from XML documents.
author: id50instance
author: id6instance
booktitle: Semantic Web 2001 (at WWW10), May 1, 2001, Hongkong, China
title: Learning Ontologies for the Semantic Web
year: 2001

id489instance
type: InProceedings
type: Publication
abstract: Interoperability is one of the major design objectives when building applications for B2B and Semantic Web applications. In this paper, we present a methodology for engineering semantic knowledge such that these semantic structures are easier reusable when switching between several representa-tion languages. For this purpose, we re-consider the commonalities of representation languages and their usage in actual applica-tions. Out of this consideration we derive se-mantic patterns as a means to communicate knowledge at an epistemological level of rep-resentation and as a means for (partial) exe-cution by any particular implementation of any representation language. The underlying method we propose combines the advantages of formal specification methods (where fea-sible) with informal, natural language expla-nations such as used in software engineering for design patterns.
author: id34instance
author: id50instance
author: id6instance
booktitle: Proceedings of the IJCAI-01 Workshop on E-Business & the Intelligent Web, Seattle, WA, USA, August 5, 2001
title: Engineering ontologies using semantic patterns
year: 2001

id490instance
type: Proceedings
type: Publication
abstract: In the Semantic Web Mining workshop we intend to bring together researchers and practitioners from the two fastly developing research areas Semantic Web and Web Mining. One can improve the results of Web Mining by exploiting the new semantic structures in the web. Furthermore, Web Mining can help to build the Semantic Web.
editor: id14instance
editor: id8instance
editor: id17instance
note: Workshop at ECML/PKDD 2001, Freiburg
title: Semantic Web Mining
year: 2001

id491instance
type: Proceedings
type: Publication
abstract: Ontologies serve as a means for establishing a conceptually concise basis for communicating knowledge for many purposes. They are a popular research topic in Artificial Intelligence, e.g. knowledge engineering, natural language processing, intelligent information integration and multi-agent systems. Recently, ontologies are also applied outside the AI world, e.g. in the World Wide Web community that try to represent machine-processable data on the web using ontologies and formal metadata.
editor: id50instance
editor: id6instance
editor: id8instance
note: Workshop at KI 2001, Wien
title: Ontologies
year: 2001

id492instance
type: InProceedings
type: Publication
abstract: Wissen ist seit jeher ein bedeutender Wettbewerbsfaktor für Unternehmen. Erst in neuerer Zeit jedoch wird das Management dieser Ressource als betriebliche Führungsaufgabe betrachtet. Um Wissen explizit und damit maschinell verarbeitbar zu machen, benötigt Wissen stets eine Repräsentation. Diese kann, je nach Art des Wissens und der geplanten Anwendung, vielfältige Erscheinungsformen haben, die von der gesprochenen über die geschriebene Sprache bis hin zu logik-basierten Formalismen reichen. Um betriebliches Wissen zu erschließen, ist oftmals die Verwendung vorhandener unvollständiger Wissensrepräsentationsformen erforderlich. Für die Konzeption einer IT-basierten Wissensmanagementumgebung ist die Auswahl des Repräsentationsformalismus und der Verarbeitungsmethoden von wesentlicher Bedeutung. Innerhalb des Workshops "Methoden und Techniken der Wissensverarbeitung" wurden sowohl unterschiedliche Methoden und Techniken der Wissensverarbeitung in Bezug auf das Wissensmanagement als auch deren Anwendungen in konkreten Problemdomänen diskutiert.
author: id8instance
author: id322instance
booktitle: Professionelles Wissensmanagement - Erfahrungen und Visionen. Proc. WM '01
month: March
title: Methoden und Techniken der Wissensverarbeitung, Workshop der 1. Tagung Professionelles Wissensmanagement - Erfahrungen und Visionen, Baden-Baden, 15.-16. März 2001
year: 2001

id493instance
type: InProceedings
type: Publication
abstract: One of the core challenges for the Semantic Web is the aspect of decentralization. Local structures can be modeled by ontologies. How- ever, in order to support global communication and knowledge exchange, mechanisms have to be developed for integrating the local systems. We adopt the database approach of autonomous federated database systems and consider an architecture for federated ontologies for the Semantic Web as starting point of our work. We identify the need for merging specific ontologies for developing feder- ated, but still autonomous web systems. We present the method FCA{ Merge for merging ontologies following a bottom-up approach which offers a structural description of the merging process. The method is guided by application-specific instances of the given source ontologies that are to be merged. We apply techniques from natural language pro- cessing and formal concept analysis to derive a lattice of concepts as a structural result of FCA{Merge. The generated result is then explored and transformed into the merged ontology with human interaction.
author: id50instance
author: id8instance
booktitle: Proc. Intl. Workshop on Foundations of Models for Information Integration, Viterbo, Italy, Sept. 16-18, 2001
month: September
title: Ontology Merging for Federated Ontologies for the Semantic Web
year: 2001

id494instance
type: InProceedings
type: Publication
abstract: We introduce the notion of iceberg concept lattices and show their use in Knowledge Discovery in Databases (KDD). Iceberg lattices are a conceptual clustering method, which is well suited for analyzing very large databases. They also serve as a condensed representation of frequent itemsets, as starting point for computing bases of association rules, and as a visualization method for association rules. Iceberg concept lattices are based on the theory of Formal Concept Analysis, a mathematical theory with applications in data analysis, information retrieval, and knowledge discovery.
author: id8instance
author: id87instance
author: id89instance
author: id90instance
booktitle: Proc. GI-Fachgruppentreffen Maschinelles Lernen '01
month: October
title: Conceptual Clustering with Iceberg Concept Lattices
year: 2001

id495instance
type: InCollection
type: Publication
abstract: Automatic intelligent web exploration will benefit from shallow information extraction techniques if the latter can be brought to work within many different domains. The major bottleneck for this, however, lies in the so far difficult and expensive modeling of lexical knowledge, extraction rules, and an ontology that together define the information extraction system. In this paper we present a bootstrapping approach that allows for the fast creation of an ontology-based information extracting system relying on several basic components, viz. a core information extraction system, an ontology engineering environment and an inference engine. We make extensive use of machine learning techniques to support the semi-automatic, incremental bootstrapping of the domain-specific target information extraction system
author: id50instance
author: id6instance
author: id318instance
booktitle: Intelligent Exploration of the Web
title: Bootstrapping an Ontology-based Information Extraction System
year: 2001

id496instance
type: InCollection
type: Publication
author: id20instance
author: id32instance
author: id50instance
author: id57instance
author: id6instance
booktitle: Creating the Semantic Web
has project: id58instance
title: Inside AIFB - Access to a Semantic Knowledge Portal
year: 2001

id497instance
type: InCollection
type: Publication
abstract: RDF(S)1 constitutes a newly emerging standard for metadata that is about to turn the World Wide Web into a machine-understandable knowledge base. It is an XML application that allows for the denotation of facts and schemata in a web-compatible format, building on an elaborate object-model for describing concepts and relations. Thus, it might turn up as a natural choice for a widely-useable ontology description language. However, its lack of capabilities for describing the semantics of concepts and relations beyond those provided by inheritance mechanisms makes it a rather weak language for even the most austere knowledge-based system. This paper presents an approach for modeling ontologies in RDF(S) that also considers axioms as objects that are describable in RDF(S). Thus, we provide flexible, extensible, and adequate means for accessing and exchanging axioms in RDF(S). Our approach follows the spirit of the World Wide Web, as we do not assume a global axiom specification language that is too intractable for one purpose and too weak for the next, but rather a methodology that allows (communities of) users to specify what axioms are interesting in their domain.
author: id11instance
author: id34instance
author: id50instance
author: id6instance
booktitle: Knowledge Media in Healthcare: Opportunities and Challenges
month: December
title: An extensible approach for Modeling Ontologies in RDF(S)
year: 2001

id498instance
type: Article
type: Publication
abstract: Ontobroker applies Artificial Intelligence techniques to improve access to heterogeneous, distributed and semistructured information sources as they are presented in the World Wide Web or organization-wide intranets. It relies on the use of ontologies to annotate web pages, formulate queries and derive answers. In the paper we will briefly sketch Ontobroker. Then we will discuss its main shortcomings, i.e. we will share the lessons we learned from our exercise. We will also show how On2broker overcomes these limitations. Most important is the separation of the query and inference engines and the integration of new web standards like XML and RDF.
author: id11instance
author: id34instance
author: id41instance
author: id57instance
author: id60instance
author: id67instance
author: id152instance
journal: International Journal of Cooperative Information Systems
number: 4
pages: 361-382
title: Lessons Learned from Applying AI to the Web
volume: 9
year: 2000

id499instance
type: InProceedings
type: Publication
abstract: Providing user support for the application of Data Mining algorithms in the field of Knowledge Discovery in Databases (KDD) is an important issue. Based on ideas from the fields of statistics, machine learning and knowledge engineering we provided a general framework for defining user support. The general framework contains a combined top-down and bottom-up strategy to tackle this problem. In the current paper we describe the Algorithm Selection Tool (AST) that is one component in our framework. AST is designed to support algorithm selection in the knowledge discovery process with a case-based reasoning approach. We discuss the architecture of AST and explain the basic components. We present the evaluation of our approach in a systematic analysis of the case retrieval behaviour and thus of the selection support offered by our system.
author: id55instance
author: id57instance
booktitle: Classification and Information Processing at the Turn of the Millennium, Proc. of the 23rd Annual Conf. of the Gesellschaft fuer Klassifikation e.V.
title: Algorithm Selection Support for Classification
year: 2000

id49instance
type: InProceedings
type: Publication
abstract: Richly interlinked, machine-understandable data constitute the basis for the Semantic Web. We provide a framework, CREAM, that allows for creation of metadata. While the annotation mode of CREAM allows to create metadata for existing web pages, the authoring mode lets authors create metadata almost for free while putting together the content of a page. As a particularity of our framework, CREAM allows to create relational metadata, i.e. metadata that instantiate interrelated definitions of classes in a domain ontology rather than a comparatively rigid template-like schema as Dublin Core. We discuss some of the requirements one has to meet when developing such an ontology-based framework, e.g. the integration of a metadata crawler, inference services, document management and a meta-ontology, and describe its implementation, viz. Ont-O-Mat a component-based, ontology-driven Web page authoring and annotation tool.
author: id13instance
author: id6instance
booktitle: Proceedings of the 11th International World Wide Web Conference, WWW 2002, Honolulu, Hawaii, May 7-11, 2002
has project: id23instance
has project: id9instance
is about: id2instance
is about: id79instance
is about: id81instance
title: Authoring and Annotation of Web Pages in CREAM
year: 2002

id4instance
type: Article
type: Publication
abstract: Der Erfolg von Organisationen hängt unmittelbar von dem zur Verfügung stehenden Wissen ab. Wissensmanagement dient dazu,die Kreierung und Nutzung des Wissens nicht nur dem Zufall zu überlassen,sondern auch gezielt Verbesserungen vorzunehmen.Dabei müssen Wissensmanagementmaßnahmen primär die nichttechnologischen Aspekte berücksichtigen. Sekundär,aber eminent ichtig für effizientes Arbeiten sind Wissensmanagementsysteme, die nicht nur eine IT-Infrastruktur bieten,sondern Wissen inhaltsbasiert zur Verfügung stellen.Hierfür eignen sich Ontologien und Metadaten.In diesem Artikel ird ein Rahmen vorgestellt,der dazu dient, Wissensmanagementsysteme,die auf Ontologien und Metadaten aufbauen,zu konstruieren und zu nutzen. Für die entsprechenden Prozesse werden Methoden und Werkzeuge vorgestellt,die die Konstruktion und die Nutzung von Ontologien für Zwecke des Wissensmanagements erleichtern bzw. erlauben,selbst aber wiederum in anderen Anwendungsgebieten, wie z.B.Semantic Web und e-Learning,relevant sind.
author: id6instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id52instance
is about: id68instance
is about: id69instance
is about: id70instance
journal: Informatik Spektrum
number: 3
pages: 194-209
title: Wissensmanagement mit Ontologien und Metadaten
volume: 25
year: 2002

id500instance
type: Article
type: Publication
abstract: The next generation of the Web is often characterized as the ?Semantic Web?: information will no longer only be intended for human readers, but also for processing by machines, enabling intelligent information services, personalized Web-sites, and semantically empowered search-engines. The Semantic Web requires interoperability on the semantic level. Semantic interoperability requires standards not only for the syntactic form of documents, but also for the semantic content. Proposals aiming at semantic interoperability are the results of recent W3C standardization efforts, notably XML/XML Schema and RDF/RDF Schema. In this paper, we make the following claims: · A further representation and inference layer is needed on top of the currently available layers of the WWW. · To establish such a layer, we propose a general method for encoding arbitrary ontology representation languages into RDF/RDF Schema. · We illustrate the extension method by applying it to a particular ontology representation and inference language (OIL).
author: id11instance
author: id34instance
author: id67instance
author: id220instance
author: id324instance
author: id61instance
author: id7instance
author: id81instance
journal: IEEE Internet Computing
title: The Semantic Web - on the respective Roles of XML and RDF
year: 2000

id501instance
type: InCollection
type: Publication
abstract: Knowledge Engineering was in the past primarily concerned with building and developing knowledge-based systems, an objective which puts Knowledge Engineering in a niche of the world-wide research efforts - at best. This has changed dramatically: Knowledge Engineering is now a key technology in the upcoming knowledge society. Companies are recognizing knowledge as their key assets, which have to be exploited and protected in a fast changing, global and competitive economy. This situation has led to the application of Knowledge Engineering techniques in Knowledge Management. The demand for more efficient (business to) business processes requires the interconnection and interoperation of different information systems. But information access and integration is not an algorithmic task that is easy to solve: much knowledge is required to resolve the semantic differences of data residing in two information systems. Thus Knowledge Engineering has become a major technique for information integration. And, last but not least the fast growing World Wide Web generates an ever-increasing demand for more efficient knowledge exploitation and creation techniques. Here again Knowledge Engineering technologies may become the key technology for solving the problem. In this paper we discuss these recent developments and describe our view of the future.
author: id11instance
author: id57instance
author: id67instance
author: id6instance
booktitle: Knowledge Engineering and Agent Technologies
title: Knowledge Engineering and Agent Technologies
year: 2000

id502instance
type: InProceedings
type: Publication
abstract: RDF(S) constitutes a newly emerging standard for metadata that is about to turn the World Wide Web into a machine-understandable knowledge base. It is an XML application that allows for the denotation of facts and schemata in a web-compatible format, building on an elaborate object-model for describing concepts and relations. Thus, it might turn up as a natural choice for a widely-useable ontology description language. However, its lack of capabilities for describing the semantics of concepts and relations beyond those provided by inheritance mechanisms makes it a rather weak language for even the most austere knowledge-based system. This paper presents an approach for modeling ontologies in RDF(S) that also considers axioms as objects that are describable in RDF(S). Thus, we provide flexible, extensible, and adequate means for accessing and exchanging axioms in RDF(S). Our approach follows the spirit of the World Wide Web, as we do not assume a global axiom specification language that is too intractable for one purpose and too weak for the next, but rather a methodology that allows (communities of) users to specify what axioms are interesting in their domain.
author: id11instance
author: id34instance
author: id50instance
author: id6instance
booktitle: Proc. of First Workshop on the Semantic Web at the Fourth European Conference International Workshop on Research and Advanced Technology for Digital Libraries, Lisbon, Portugal 18-20 September 2000
month: September
title: An extensible approach for Modeling Ontologies in RDF(S)
year: 2000

id503instance
type: Proceedings
type: Publication
editor: id6instance
editor: id325instance
month: March
title: Bringing Knowledge to Business Processes. Papers from 2000 AAAI Spring Symposium
year: 2000

id504instance
type: Book
type: Publication
author: id8instance
author: id207instance
isbn: 3540663916
title: Begriffliche Wissensverarbeitung - Methoden und Anwendungen
year: 2000

id505instance
type: Book
type: Publication
author: id8instance
isbn: 3826576691
month: July
title: Working with Conceptual Structures - Contributions to ICCS 2000
year: 2000

id506instance
type: Proceedings
type: Publication
editor: id50instance
editor: id6instance
editor: id326instance
editor: id68instance
month: August
title: Proceedings of the First Workshop on Ontology Learning OL'2000, Berlin, Germany, August 25, 2000.
volume: 31
year: 2000

id507instance
type: InProceedings
type: Publication
abstract: Semantic Annotation is a basic technology for intelli-gent content and is beneficial in a wide range of content-oriented intelligent applications. In this paper we present our work in ontology-based semantic annotation, which is embedded in a scenario of a knowledge portal appli-cation. Starting with seemingly good and bad manual semantic annotation, we describe our experiences made within the KA2-initiative. The experiences gave us the starting point for developing an ergonomic and knowl-edge base-supported annotation tool. Furthermore, the annotation tool described are currently extended with mechanisms for semi-automatic information-extraction based annotation. Supporting the evolving nature of semantic content we additionally describe our idea of evolving ontologies supporting semantic annotation.
author: id34instance
author: id50instance
author: id60instance
author: id6instance
booktitle: Proceedings of the COLING 2000 Workshop on Semantic Annotation and Intelligent Content, Luxembourg, August 5-6, 2000
month: August
title: From Manual to Semi-automatic Semantic Annotation: About Ontology-based Text Annotation Tools
year: 2000

id508instance
type: InProceedings
type: Publication
abstract: We describe an approach towards integrating the semantics of semi-structured documents with task- support for (weakly-structured) business processes and proactive inferencing capabilities of a desk sup- port agent. The proactive assistance of the intelli- gent agent is motivated by the requirements posed in (weakly-structured) business processes performed by a typical knowledge worker. First, we introduce a reactive agent that provides knowledge out of an organizational memory for the business task at hand. The building of the reactive agent requires rather rigid query structures that do not _t nicely with varying precision of knowledge found in the organizational memory. Thus, we propose an enhanced agent that reasons proactively about what might be interesting to you and what might be dueinyour next step.
author: id60instance
author: id6instance
booktitle: Proceedings of the AAAI Symposium on Bringing Knowledge to Business Processes, Stanford, CA, USA, March 20-22, 2000
title: A Proactive Inferencing Agent for Desk Support
year: 2000

id509instance
type: InProceedings
type: Publication
abstract: Up-to-date corporate information research, i.e. the active tracking and management of knowl-edge relevant to one's business, is a major task for knowledge-intensive companies. While the correct analysis of market situations and competitors are critical requirements for success, the failure to provide adequate knowledge about one's business environment may incur large losses. In order to support the tracking of external business knowledge and its analysis, we have built CHAR, the Corporate History AnalyseR, a new type of system for gathering and analysing tem-poral data about companies. CHAR integrates facts about organizational structures and strategic activities into a common knowledge base. Building on an ontology with an elaborate temporal structure, knowledge pieces are amalgamated in order to derive a plentitude of summarizing views onto current and previous states of affairs.
author: id41instance
author: id57instance
author: id60instance
author: id6instance
booktitle: Proceedings of the Third International Conference on Practical Aspects of Knowledge Management, Basel, Switzerland, October 30-31, 2000
month: October
title: The Times They Are A-Changin' - The Corporate History Analyzer
year: 2000

id50instance
type: InProceedings
type: Publication
abstract: Abstract. Richly interlinked, machine-understandable data constitute the basis for the Semantic Web. We provide a framework, S-CREAM, that allows for creation of metadata and is trainable for a speci¯c domain. Annotating web documents is one of the major techniques for creating metadata on the web. The implementation of S-CREAM, Ont-O-Mat supports now the semi-automatic annotation of web pages. This semi- automatic annotation is based on the information extraction component Amilcare. Ont-O-Mat extract with the help of Amilcare knowledge struc- ture from web pages through the use of knowledge extraction rules. These rules are the result of a learning-cycle based on already annotated pages.
author: id13instance
author: id6instance
author: id31instance
booktitle: Proc. of the European Conference on Knowledge Acquisition and Management - EKAW-2002. Madrid, Spain, October 1-4, 2002
has project: id23instance
is about: id79instance
is about: id81instance
title: S-CREAM - Semi-automatic CREAtion of Metadata
year: 2002

id510instance
type: InProceedings
type: Publication
abstract: Skill management systems serve as technical platforms for mostly, though not exclusively, corporate-internal market places for skills and know-how. The systems are typically built on top of a database that contains profiles of employees and applicants. Thus, the skills may be retrieved through database queries. However, these approaches incur two major problems, viz. the finding of approximate matches and the maintenance of skill data. In this paper we describe two systems that leverage corporate skill knowledge by offering advanced means for both. We present ProPer that uses means from decision theory to allow for compensate skill matching. Then, we describe OntoProPer that combines these methods with intelligent means for inferencing of skill data. For the latter an ontology provides background knowledge, i.e. conceptual structures and rules, which supplement the skill database with ground and inferred facts from secondary information, such as project documents. These supplement facts re-duce maintenance efforts since much secondary information is gathered in the organizational memory through common working tasks. Keywords: skill management, human resource management, ontologies, intranet application.
author: id20instance
author: id50instance
author: id6instance
booktitle: Proceedings of the Third International Conference on Practical Aspects of Knowledge Management, Basel, Switzerland, October 30-31, 2000
month: October
title: Leveraging Corporate Skill Knowledge - From ProPer to OntoProper
year: 2000

id511instance
type: InProceedings
type: Publication
abstract: Non-taxonomic relations between concepts appear as a major building block in common ontology definitions. In fact, their definition consumes much of the time needed for engineering an ontology. We here describe a new approach for mining non-taxonomic conceptual relations from text building on shallow text processing tech-niques. We use a generalized association rule algorithm that does not only detect re-lations between concepts, but also determines the appropriate level of abstraction at which to define relations. This is crucial for an appropriate ontology definition in order that it be succinct and conceptually adequate and, hence, easy to understand, maintain, and extend. We also perform an empirical evaluation of our approach with regard to a manually engineered ontology. For this purpose, we present a new paradigm suited to evaluate the degree to which relations that are learned match relations in a manually engineered ontology.
address: R.Dieng & O Corby
author: id50instance
author: id6instance
booktitle: EKAW-2000 - 12th International Conference on Knowledge Engineering and Knowledge Management, October 2-6, 2000, Juan-les-Pins, France
month: October
title: Mining Ontologies from Text
year: 2000

id512instance
type: InProceedings
type: Publication
author: id11instance
author: id57instance
author: id6instance
author: id327instance
author: id328instance
author: id329instance
booktitle: ECDL 2000 - Proceedings of the Fourth European Conference on Research and Advanced Technology for Digital Libraries. Lisbon, Portugal, September 18-20, 2000
month: September
title: An Information Food Chain for Advanced Applications on the WWW
year: 2000

id513instance
type: InProceedings
type: Publication
abstract: This paper discusses steps towards an order-theoretic foundation for maintaining and merging ontologies. We claim that the commitment to ontologies having certain structural properties allows a semantically founded (semi-)automation of operations on ontologies. We provide a list of research questions and give first answers. In particular we argue for the use of Formal Concept Analysis for maintaining ontologies.
author: id20instance
author: id57instance
author: id8instance
booktitle: Proc. Referenzmodellierung 2000, Siegen, Germany, October 12-13, 2000
month: October
title: Towards an Order-Theoretical Foundation for Maintaining and Merging Ontologies
year: 2000

id514instance
type: InProceedings
type: Publication
abstract: This papers presents an approach for modeling largescale ontologies. We extend well-established methods for modeling concepts and relations by transportable methods for modeling ontological axioms. The gist of our approach lies in the way we treat the majority of axioms. They are categorized into different types and specified as complex objects that refer to concepts and relations. Considering language and system particularities, this first layer of representation is then translated into the target representation language. This two-layer approach benefits engineering, because the intended meaning of axioms is captured by the categorization of axioms. Classified object representations allow for versatile access to and manipulations of axioms via graphical user interfaces.
author: id50instance
author: id6instance
booktitle: Proceedings of the ECAI'2000 Workshop on on Applications of Ontologies and Problem-Solving Methods, Berlin
title: Ontology Engineering beyond the Modeling of Concepts and Relations
year: 2000

id515instance
type: InProceedings
type: Publication
abstract: Community web portals serve as portals for the information needs of particular communities on the web. We here discuss how a comprehensive, ontology-based approach for building and maintaining a high-value community web portal has been conceived and implemented. The ontology serves as a semantic backbone for accessing knowledge on the portal, for contributing information, as well as for developing and maintaining the portal. In particular, the ontology allows for flexible querying and inferencing of knowledge. Actual usage of our technology is facilitated through a set of tools that are about to turn our research system into a portal for wide-spread usage right now. The development of these tools has greatly benefited from some first experiences we had with actual users of the community web portal of the knowledge acquisition community.
author: id11instance
author: id14instance
author: id20instance
author: id41instance
author: id50instance
author: id57instance
author: id60instance
author: id6instance
booktitle: AAAI 2000/IAAI 2000 - Proceedings of the 17th National Conference on Artificial Intelligence and 12th Innovative Applications of Artificial Intelligence Conference, Austin/TX, USA, July 30-August 3, 2000
title: AI for the Web - Ontology-based Community Web Portals
year: 2000

id516instance
type: InProceedings
type: Publication
author: id50instance
author: id6instance
booktitle: Poster Session at the 5th International Conference on Applications of Natural Language to Information Systems NLDB'2000, Versailles - France, June 28-30, 2000
month: June
title: Ontology Learning from Text
year: 2000

id517instance
type: InProceedings
type: Publication
abstract: The application of any data mining algorithm needs a goal-oriented preprocessing of the data. In practical applications the preprocessing task is very time consuming and has an important in uence on the quality of the generated models. In this paper we describe an new approach for data preprocessing. While merging database technology with classical data mining systems using an OLAP engine as interface we outline an architecture for OLAP-based preprocessing, which enables interactive and iterative processing of data. This high level of interaction between human and database systems enables eÃ†cient understanding and preparing of data for building scalable data mining applications. Our case study taken from the data-intensive telecommunications domain uses the proposed methodology for the generation of user communication proles. The user proles are then investigated with data mining algorithms for clustering customers with similar communication behavior and describing the investigated clusters using intensional rules.
author: id14instance
author: id35instance
author: id50instance
booktitle: DaWaK'2000 - 2nd International Conference on Data Warehousing and Knowledge Discovery, LCNS September 4-6, 2000, Greenwich, UK
month: September
title: Enhancing Preprocessing in Data-Intensive Domains using Online-Analytical Processing
year: 2000

id518instance
type: InProceedings
type: Publication
abstract: Ontologies have become an important means for structuring information and information systems and, hence, important in knowledge as well as in software engineering. However, there remains the problem of engineering large and adequate ontologies within short time frames in order to keep costs low. For this purpose, eorts have been made to facilitate the ontology engineering process, in particular the acquisition of ontologies from domain texts. We present a general architecture for discovering conceptual structures and engineering ontologies. Based on the architecture we propose a new approach to extend current approaches, who mostly focus on the semi-automatic acquisition of taxonomies, by the discovery of non-taxonomic conceptual relations. We use a generalized association rule algorithm that does not only detect relations between concepts, but also determines the appropriate level of abstraction at which to define relations.
author: id50instance
author: id6instance
booktitle: Proceedings of the Twelfth International Conference on Software Engineering and Knowledge Engineering (SEKE'2000)
title: Semi-automatic Engineering of Ontologies from Text
year: 2000

id519instance
type: InProceedings
type: Publication
abstract: Non-taxonomic relations between concepts appear as a major building block in common ontology definitions. In fact, their definition consumes much of the time needed for engineering an ontology. We here describe a new approach to discover non-taxonomic conceptual relations from text building on shallow text processing techniques. We use a generalized association rule algorithm that does not only detect relations between concepts, but also determines the appropriate level of abstraction at which to define relations. This is crucial for an appropriate ontology definition in order that it be succinct and conceptually adequate and, hence, easy to understand, maintain, and extend. We also perform an empirical evaluation of our approach with regard to a manually engineered ontology. For this purpose, we present a new paradigm suited to evaluate the degree to which relations that are learned match relations in a manually engineered ontology.
author: id50instance
author: id6instance
booktitle: ECAI 2000, Proceedings of the 14th European Conference on Artificial Intelligence, 2000
title: Discovering Conceptual Relations from Text
year: 2000

id520instance
type: Article
type: Publication
abstract: Currently dozens of XML-based applications exist or are under development. Many of them offer DTDs that define the structure of actual XML documents. Access to these documents relies on special purpose applications or on query languages that are closely tied to the document structures. Our approach uses ontologies to derive a canonical structure, i.e. a DTD, to access sets of distributed XML documents on a conceptual level. We will show how the combination of conceptual modeling, inheritance, and inference mechanisms on the one hand with the popularity, simplicity, and flexibility of XML on the other hand leads to applications providing a broad range of high quality information.
author: id34instance
author: id57instance
journal: Danta and Knowledge Engineering
title: How to Structure and Access XML Documents With Ontologies
year: 2000

id521instance
type: InProceedings
type: Publication
abstract: In this paper we present a new approach for language-neutral modeling of large-scale ontologies. The gist of our approach lies in the way we treat the majority of axioms. Instead of capturing axiom semantics in some specific representation language, we categorize axioms into different types and specify them as complex objects that refer to concepts and relations. A separate layer that is language-specific, in fact it may even vary for different inference engines working on the same language, describes how these objects are translated into a goal representation. In addition to its far reaching independence with regard to specific representation languages, this approach benefits engineering since the semantics of important types of axioms may be much more elucidated in our ontology engineering tool, OntoEdit, than in comparable tools. Furthermore, our approach is principled in a way that allows for comparably easy adaptation of our tool to requirements for modeling axioms in specific domains.
author: id50instance
author: id57instance
author: id60instance
author: id6instance
booktitle: Proceedings of the German Workshop "Modellierung" 2000, Koblenz, Germany, April, 5-7, 2000
month: April
title: Representation Language-Neutral Modeling of Ontologies
year: 2000

id522instance
type: InProceedings
type: Publication
author: id2023instance
author: id2065instance
author: id40instance
author: id81instance
booktitle: Proceedings of the Third International Semantic Web Conference, Hiroshima, Japan, 2004.
has project: id30instance
has project: id42instance
has project: id49instance
is about: id79instance
month: November
title: A comparison of RDF query languages
year: 2004

id523instance
type: InCollection
type: Publication
abstract: A Conceptual Information System consists of a database together with conceptual hierarchies. The visualization of arbitrary combinations of conceptual hierar­ chies by nested line diagrams allows an on­line interaction with a database to analyze data conceptually. The chapter describes the conception of Conceptual Information Systems and discusses the use of their visualization techniques for On­Line Analytical Processing (OLAP).
author: id8instance
booktitle: Information Organization and Databases
chapter: 14
title: Conceptual On-Line Analytical Processing
year: 2000

id524instance
type: Article
type: Publication
abstract: In this paper, we propose the algorithm Pascal which introduces a novel optimization of the well-known algorithm Apriori. This optimization is based on a new strategy called pattern counting inference that relies on the concept of key patterns. We show that the support of frequent non-key patterns can be inferred from frequent key patterns without accessing the database. Experiments comparing Pascal to the three algorithms Apriori, Close and Max-Miner, show that Pascal is among the most efficient algorithms for mining frequent patterns.
author: id8instance
author: id87instance
author: id88instance
author: id89instance
author: id90instance
journal: SIGKDD Exploration Special Issue on Scalable Algorithms
pages: 71-80
title: Mining Frequent Patterns with Counting Inference
year: 2000

id525instance
type: Article
type: Publication
author: id8instance
author: id87instance
author: id88instance
author: id89instance
author: id90instance
journal: Technique et Science Informatiques
title: Pascal : un algorithme d'extraction des motifs frequents
year: 2000

id526instance
type: InProceedings
type: Publication
abstract: The problem of the relevance and the usefulness of extracted association rules is of primary importance because, in the majority of cases, real-life databases lead to several thousands association rules with high confidence and among which are many redundancies. Using the closure of the Galois connection, we define two new bases for association rules which union is a generating set for all valid association rules with support and confidence. These bases are characterized using frequent closed itemsets and their generators; they consist of the non-redundant exact and approximate association rules having minimal antecedents and maximal consequents, i.e. the most relevant association rules. Algorithms for extracting these bases are presented and results of experiments carried out on real-life databases show that the proposed bases are useful, and that their generation is not time consuming.
author: id8instance
author: id87instance
author: id88instance
author: id89instance
author: id90instance
booktitle: Computational Logic - CL 2000. Proc. CL '00
pages: 972-986
title: Mining Minimal Non-Redundant Association Rules Using Frequent Closed Itemsets
year: 2000

id527instance
type: InProceedings
type: Publication
abstract: In this paper, we discuss Conceptual Knowledge Discovery in Databases (CKDD) in its connection with Data Analysis. Our approach is based on Formal Concept Analysis, a mathematical theory which has been developed and proven useful during the last 20 years. Formal Con­ cept Analysis has led to a theory of conceptual information systems which has been applied by using the management system TOSCANA in a wide range of domains. In this paper, we use such an application in database marketing to demonstrate how methods and procedures of CKDD can be applied in Data Analysis. In particular, we show the interplay and integration of data mining and data analysis techniques based on For­ mal Concept Analysis. The main concern of this paper is to explain how the transition from data to knowledge can be supported by a TOSCANA system. To clarify the transition steps we discuss their correspondence to the five levels of knowledge representation established by R. Brachman and to the steps of empirically grounded theory building proposed by A. Strauss and J. Corbin.
author: id8instance
author: id207instance
author: id208instance
author: id86instance
booktitle: Conceptual Structures:Logical, Linguistic, and Computational Issues. Proc. ICCS '00
title: Conceptual Knowledge Discovery and Data Analysis
year: 2000

id528instance
type: InProceedings
type: Publication
abstract: CEM is an email management system which stores its email in a concept lattice rather than in the usual tree structure. By using such a conceptual multi-hierarchy, the system provides more in retrieving stored emails. The paper presents the underlying mathematical structures, discusses requirements for their maintenance and presents their implementation.
author: id8instance
author: id205instance
booktitle: Conceptual Structures: Logical, Linguistic, and Computational Issues. Proc. ICCS'00
pages: 438-452
title: CEM - A Conceptual Email Manager
year: 2000

id529instance
type: InProceedings
type: Publication
abstract: The aim of this paper is to indicate how TOSCANA may be extended to allow graphical representations not only of concept lat- tices but also of concept graphs in the sense of Contextual Logic. The contextual-logic extension of TOSCANA requires the logical scaling of conceptual and relational scales for which we propose the Peircean Al- gebraic Logic as reconstructed by R. W. Burch. As graphical represen- tations we recommend, besides labelled line diagrams of concept lattices and Sowa's diagrams of conceptual graphs, particular information maps for utilizing background knowledge as much as possible. Our considera- tions are illustrated by a small information system about the domestic in Austria.
author: id8instance
author: id206instance
author: id207instance
author: id330instance
booktitle: Conceptual Structures: Logical, Linguistic, and Computational Issues. Proc. ICCS '00
pages: 453-467
title: A Contextual-Logic Extension of TOSCANA
year: 2000

id52instance
type: InProceedings
type: Publication
abstract: We propose to modify a type of ant algorithm called Population based Ant Colony Optimization (P-ACO) to allow implementation on an FPGA architecture. Ant algorithms are adapted from the natural behavior of ants and used to find good solutions to combinatorial optimization problems. General layout on the FPGA and algorithmic description are covered. The most notable achievements featured in this paper are a runtime reduction and including the approximation of the heuristic function by a small set of favored decisions which changes over time.
author: id19instance
author: id29instance
author: id3instance
author: id33instance
author: id34instance
author: id36instance
author: id37instance
booktitle: Proceedings of the IEEE International Conference on Field-Programmable Technology (FPT), Hong Kong, 2002
has project: id9instance
is about: id5instance
is about: id75instance
is about: id77instance
pages: 125-133
title: Population based Ant Colony Optimization on FPGA
year: 2002

id530instance
type: InProceedings
type: Publication
author: id8instance
author: id205instance
author: id206instance
booktitle: Principles of Data Mining and Knowledge Discovery. Proc. PKDD 2000
pages: 367-374
title: CEM - A Program for Visualization and Discovery in Email
year: 2000

id531instance
type: InProceedings
type: Publication
abstract: Conceptual Information Systems are based on a formaliza- tion of the concept of `concept' as it is discussed in traditional philo- sophical logic. This formalization supports a human-centered approach to the development of Information Systems. We discuss this approach by means of an implemented Conceptual Information System for supporting IT security management in companies and organizations.
author: id8instance
author: id207instance
author: id208instance
author: id331instance
author: id332instance
booktitle: Knowledge Engineering and Knowledge Management. Methods, Models, and Tools. Proc. EKAW '00
pages: 352-365
title: Conceptual Information Systems Discussed Through an IT-Security Tool
year: 2000

id532instance
type: InProceedings
type: Publication
abstract: This paper discusses steps towards an order-theoretic foundation for maintaining and merging ontologies. We claim that the commitment to ontologies having certain structural properties allows a semantically founded (semi-) automation of operations on ontologies. We provide a list of research questions and give first answers. In particular we argue for the use of Formal Concept Analysis for maintaining ontologies.
author: id20instance
author: id57instance
author: id8instance
booktitle: Verbundtagung Wirtschaftsinformatik 2000
pages: 136-149
title: Towards an Order-Theoretical Foundation for Maintaining and Merging Ontologies
year: 2000

id533instance
type: InProceedings
type: Publication
abstract: In this paper, we propose the algorithm Pascal which introduces a novel op- timization of the well-known algorithm Apriori. Being provided with a given minsup threshold, Pascal discovers all frequent patterns by performing as few counting as possible. In order to derive the support of larger patterns without accessing the database whenever it is possible, we use the knowledge about the support of some of their sub-patterns, the so-called key patterns. Experiments comparing Pascal to the three algorithms Apriori, Close and Max-Miner, each of which being representative of a frequent patterns discovery strategy, show that Pascal is the most eÃ†cient algorithm for extracting patterns from strongly correlated data. Moreover, its execution times are equivalent to those of Apriori and Max-Miner when data is weakly correlated.
author: id8instance
author: id87instance
author: id88instance
author: id89instance
author: id90instance
booktitle: Actes des 16 Journ Bases de Donn Avanc, Blois, France, 24-27 Octobre 2000
pages: 307-322
title: Levelwise Search of Frequent Patterns
year: 2000

id534instance
type: InProceedings
type: Publication
abstract: Community web portals serve as portals for the information needs of particular communities on the web. We here discuss how a comprehensive and flexible strategy for building and maintaining a high-value community web portal has been conceived and implemented. The strategy includes collaborative information provisioning by the community members. It is based on an ontology as a semantic backbone for accessing information on the portal, for contributing information, as well as for developing and maintaining the portal. We have also implemented a set of ontology-based tools that have facilitated the construction of our show case - the community web portal of the knowledge acquisition community.
author: id11instance
author: id14instance
author: id20instance
author: id41instance
author: id50instance
author: id57instance
author: id60instance
author: id6instance
booktitle: WWW9 - Proceedings of the 9th International World Wide Web Conference, Amsterdam, The Netherlands, May, 15-19, 2000
title: Semantic Community Web Portals
year: 2000

id535instance
type: InProceedings
type: Publication
abstract: On2broker provides brokering services to improve access to heterogeneous, distributed and semistructured information sources as they are presented in the World Wide Web. It relies on the use of ontologies to make explicit the semantics of web pages. In the paper we will discuss the general architecture and main components of On2broker and provide some application scenarios. We show how we can provide semantic based access to web sources described with HTML, XML, or RDF.
author: id11instance
author: id34instance
author: id41instance
author: id57instance
author: id60instance
author: id67instance
author: id6instance
author: id152instance
booktitle: Proceedings of the World Conference on the WWW and Internet (WebNet 99), Honolulu, Hawai, USA, October 25-30, 1999
title: On2broker: Semantic-Based Access to Information Sources at the WWW
year: 1999

id536instance
type: InProceedings
type: Publication
abstract: The diversity and availability of information sources on the World Wide Web has set the stage for integration and reuse at an unparalleled scale. There remain signi.cant hurdles to exploiting the extent of the Web's resources in a consistent, scalable and maintainable fashion. The autonomy and volatility of Web sources complicates maintaining wrappers consistent with the requirements of the data's target application. Also, the sources' semantic heterogeneity requires practical methods to mediate their contents. This paper describes our e.orts in developing an algebra on semistructured data. This algebra is the tool we use to develop and maintain wrappers, and mediate their semantic content. We describe wrapper creation, re.nement and maintenance as the process of developing a congruity measure between source data sets and their target application. The congruity measure expresses explicitly the context within which the source data is relevant for its target use. Enabling mediation between wrappers corresponds to establishing an articulation between data sources through a similarity measure. The similarity measure encapsulates conditions under which distinct sources may be used together. Examples using the algebra show how the Summarize operator enables creation and maintenance of a target data set from a source. We de.ne the Match operator and demonstrate its use in mediating the content of similar sources. We have applied these two operators respectively to an online dictionary with over 125,000 di.erent terms, and to the web pages of NATO gov- ernments and their allies. We give a description of the rule language that we use to wrap and mediate sources, and conclude with the applications that motivate the other operations in the algebra.
author: id57instance
author: id327instance
author: id328instance
author: id329instance
author: id333instance
author: id334instance
booktitle: 1999 IEEE Knowledge and Data Engineering Exchange Workshop (KDEX'99), Chicago
month: November
title: An Algebra for Semantic Interoperation of Semistructured Data
year: 1999

id537instance
type: InProceedings
type: Publication
abstract: Access to XML-based documents currently relies on query languages that are closely tied to the document structures, i.e. when looking for information one has to be aware of this structure and cannot easily specify the information needs conceptually. Our approach uses ontologies to access sets of distributed XML documents on a conceptual level. We integrate conceptual modeling, inheritance, and inference mechanisms on the one hand with the popularity, simplicity, and flexibility of XML on the other hand. We present an approach that defines the relationship between a given ontology and a document type definition (DTD) for classes of XML documents. Thus, we are able to supplement syntactical access to XML documents by conceptual, i.e. real semantic access.
author: id34instance
author: id57instance
booktitle: Proceedings of the 12th Workshop for Knowledge Acquisition, Modeling and management (KAW'99), Banff, Canada
month: October
title: Ontologies as Conceptual Models for XML Documents
year: 1999

id538instance
type: InProceedings
type: Publication
author: id55instance
author: id57instance
booktitle: Principles of Data Mining and Knowledge Discovery, Proceedings of the Third European Symposium, PKDD '99, LNAI 1704, Prag, CZ, Sept. 15-18, 1999
month: September
title: AST: Support for Algorithm Selection with a CBR Approach
year: 1999

id539instance
type: InProceedings
type: Publication
author: id55instance
author: id57instance
booktitle: Proceedings of Workshop "From Machine Learning to Knowledge Discovery in Databases" at the ICML 1999, Bled, Slowenia, June, 26-31, 1999
month: June
title: Forecasting the Fault Rate Behavior for Cars
year: 1999

id53instance
type: Article
type: Publication
abstract: Dynamically and partially reconfiguranle field-programmable gate arrays (FPGAs) allow to swap in and out tasks without interrupting the execution of other tasks. The FPGA controller can decide on-line where to place new tasks onto the FPGA. Rearranging a subset of the tasks executing on the FPGA may allow the next pending task to be processed sooner. When tasks are rearranged, the arriving input data have to be buffered while the execution is suspended. In this paper, we describe and evaluate an evolutionary approach to solve the problem of placing and rearranging tasks that are supplied by input streams which have constant data rates. We use two genetic algorithms (GAs): one for iodentifying feasible rearrangements and the other for scheduling a selected rearrangement so that the delay caused by this rearrangement is small and the limited input buffer size is respected.
author: id29instance
author: id3instance
author: id33instance
author: id37instance
is about: id30instance
is about: id75instance
is about: id77instance
journal: Journal of Parallel and Distributed Computing
month: September
number: 9
pages: 1407-1420
title: An Evolutionary Approach to Dynamic Task Scheduling on FPGAs with Restricted Buffer
volume: 62
year: 2002

id540instance
type: InProceedings
type: Publication
author: id6instance
author: id335instance
booktitle: IJCAI '99 - Proceedings of the 16th International Joint Conference on Artificial Intelligence, Stockholm, Schweden, August, 1-6, 1999
month: August
title: Scalable Temporal Reasoning
year: 1999

id541instance
type: InProceedings
type: Publication
author: id6instance
author: id155instance
author: id336instance
author: id337instance
booktitle: HCI '99 - Proceedings of the 8th International Conference on Human-Computer Interaction, Munich, Germany, August, 22-27, 1999
month: August
title: An Architecture for Recovering Business Events Bottom-Up
year: 1999

id542instance
type: InProceedings
type: Publication
author: id11instance
author: id34instance
author: id41instance
author: id57instance
author: id60instance
author: id67instance
author: id6instance
author: id152instance
booktitle: WWW8 - Poster Proceedings of the 8th World Wide Web Conference, Toronto, May 11-14, 1999
month: May
title: On2broker in a Nutshell
year: 1999

id543instance
type: InProceedings
type: Publication
author: id57instance
author: id60instance
author: id6instance
author: id313instance
author: id315instance
author: id316instance
author: id318instance
author: id321instance
author: id338instance
author: id339instance
author: id340instance
author: id341instance
author: id342instance
booktitle: IWANN '99 - Proceedings of International Working Conference on Artificial and Neural Networks. Alicante, ES, 1999
title: A System for Facilitating and Enhancing Web Search
year: 1999

id544instance
type: InProceedings
type: Publication
author: id6instance
author: id336instance
booktitle: Proceedings of the international Workshop on Intelligent Workflow and Process Management: The New Frontier for AI in Business (IJCAI-99). Stockholm, Sweden
title: Towards Learning Notification Triggers
year: 1999

id545instance
type: InProceedings
type: Publication
author: id60instance
author: id6instance
booktitle: Knowledge and Business Processes: Approaching an Integration. In:OM '99 - Proceedings of the international Workshop on Knowledge Management and Organizational Memory (IJCAI-99). Stockholm, Sweden
title: Knowledge and Business Processes: Approaching an Integration
year: 1999

id546instance
type: InProceedings
type: Publication
author: id57instance
author: id60instance
author: id6instance
booktitle: Workshop on Exploring Synergies of Knowledge Management and Case-Based Reasoning (AAAI-99)
title: Ontology-based Process Support
year: 1999

id547instance
type: InProceedings
type: Publication
author: id57instance
author: id60instance
author: id6instance
author: id313instance
author: id315instance
author: id316instance
author: id318instance
author: id321instance
author: id338instance
author: id339instance
author: id340instance
author: id341instance
author: id342instance
booktitle: CIA '99 - Proceedings of the 3rd international Workshop on Cooperating Information Agents. Upsala, Sweden
title: GETESS - Searching the Web Exploiting German Texts
year: 1999

id548instance
type: InProceedings
abstract: A library of software components should be essentially more than just a juxtaposition of its items. For problem-solving methods the notion of a family is suggested as means to cluster the items and to provide partially a structure of the library. This paper especially investigates how the similar control flows of the members of such a family can be described in one framework.
author: id1960instance
booktitle: Proceeding of the 11th European Workshop on Knowledge Acquisition, Modeling,and Management (EKAW '99), Dagstuhl Castle, Germany, May 26-29, 1999
month: May
pages: 355-360
series: Lecture Notes in Artificial Intelligence (LNAI)
title: Describing Similar Control Flows for Families of Problem-Solving Methods
volume: 1621
year: 1999

id549instance
type: InProceedings
type: Publication
author: id11instance
author: id2085instance
booktitle: Knowledge-based Systems: Survey and Future Directions, Proceeding of the 5th German Conf. on Knowledge-based Systems, Wuerzburg, March 1999,
series: Lecture Notes in Artificial Intelligence (LNAI)
title: Organizational Memory: Knowledge Acquisition, Integration, and Retrieval Issues
volume: 1570
year: 1999

id54instance
type: InProceedings
type: Publication
abstract: Quality information systems (QIS) are providing all the quality-relevant information during the whole life cycle of a product to all the people involved. With regard to e-learning applications this means that a QIS should provide quality-relevant information to the authors of e-learning materials as well as to the instructors and the learners using them. In this work it is described how such a QIS can be implemented in the context of e-learning applications. In this connection a prototypic system design and strategies for the integration of a QIS into the information system infrastructure of e-learning providers are presented.
author: id23instance
booktitle: Proceedings of ICL 2002 – Blended Learning. Villach/Österreich, 25.-27.09.2002
has project: id8instance
is about: id20instance
title: Implementation of Quality Information Systems for E-Learning Applications
year: 2002

id550instance
type: InProceedings
type: Publication
abstract: This paper provides an overview of important developments in the field of Knowledge Engineering. We discuss the paradigm shift from a transfer to a modeling approach and discuss two prominent methodological achievements: problem-solving methods and ontologies. To illustrate these and additional concepts we outline several modeling frameworks: CommonKADS, MIKE, PROTÉGÉ-II, and D3. We also discuss two fields which have emerged in the last few years and are promising areas for applying and further developing concepts and methods from Knowledge Engineering: Intelligent Information Integration and Knowledge Management.
author: id11instance
author: id57instance
author: id67instance
author: id174instance
booktitle: Knowledge-based Systems: Survey and Future Directions, Proceeding of the 5th German Conf. on Knowledge-based Systems, Wuerzburg, March 1999
month: March
series: Lecture Notes in Artificial Intelligence (LNAI)
title: Knowledge Engineering: Survey and Future Directions
volume: 1570
year: 1999

id551instance
type: InProceedings
type: Publication
abstract: The World Wide Web (WWW) can be viewed as the largest multimedia database that has ever existed. However, its support for query answering and automated inference is very limited. Metadata and domain specific ontologies were proposed by several authors to solve this problem. We developed Ontobroker which uses formal ontologies to extract, reason, and generate metadata in the WWW. The paper describes the formalisms and tools for formulating queries, defining ontologies, extracting metadata, and generating metadata in the format of the Resource Description Framework (RDF), as recently proposed by the World Wide Web Consortium (W3C). These methods provide a means for semantic based query handling even if the information is spread over several sources. Furthermore, the generation of RDF descriptions enables the exploitation of the ontological information in RDF-based applications.
author: id11instance
author: id34instance
author: id57instance
author: id67instance
booktitle: Database Semantics: Semantic Issues in Multimedia Systems, Proceedings TC2/WG 2.6 8th Working Conference on Database Semantics (DS-8), Rotorua, New Zealand
title: Ontobroker: Ontology Based Access to Distributed and Semi-Structured Information
year: 1999

id552instance
type: Article
type: Publication
abstract: The paper describes the MIKE (Model-based and Incremental Knowledge Engineering) approach for developing knowledge-based systems. MIKE integrates semiformal and formal specification techniques together with prototyping into a coherent framework. All activities in the building process of a knowledge-based system are embedded in a cyclic process model. For the semiformal representation we use a hypermedia-based formalism which serves as a communication basis between expert and knowledge engineer during knowledge acquisition. The semiformal knowledge representation is also the basis for formalization, resulting in a formal and executable model, specified in the Knowledge Acquisition and Representation Language (KARL). Since KARL is executable the model of expertise can be developed and validated by prototyping. A smooth transition from a semiformal to a formal specification and further on to design is achieved because all the description techniques rely on the same conceptual model to describe the functional and non-functional aspects of the system. Thus, the system is thoroughly documented at different description levels, each of which focuses on a distinct aspect of the entire development effort. Traceability of requirements is supported by linking the different models to each other.
author: id26instance
author: id41instance
author: id57instance
author: id67instance
journal: Journal of Automated Software Engineering
month: October
number: 4
pages: 389-418
title: Developing Knowledge-Based Systems with MIKE
volume: 5
year: 1998

id553instance
type: Proceedings
type: Publication
abstract: Following the tradition of workshops on application of Machine Learning that took place last years, this year a combined ICML/AAAI 98 workshop took place in Madison, Wisconsin. Where the ICML-97 workshop was focussed on real applications, this years workshop sought to proceed along these lines and extend the focus to the structure behind such applications. Questions where raised like: is there a possibility to find such structures, if so, which general structure can be found and how can they be described? Does our knowledge of structure in application processes aim us at new topics? Which topics should be raised, or are important? The one-days workshop program finally consisted of 8 accepted papers of which 7 where actually presented, and a total of 4 invited speakers let their lights shine on several topics concerning the process of application of ML. At the end of the day there was a discussion session that reflected on issues that rose during the presentations (which meant a slight change of program as it was originally defined).
editor: id68instance
editor: id343instance
editor: id344instance
title: The Methodology of Applying Machine Learning: Problem Definition, Task Decomposition and Technique Selection. Workshop at the AAAI-98/ ICML-98. Madison, WI, july 27th, 1998
year: 1998

id554instance
type: Article
type: Publication
author: id55instance
author: id57instance
author: id68instance
journal: Themenheft der Künstlichen Intelligenz
month: March
number: 1
pages: 40-45
title: Providing User Support for Developing Knowledge Discovery Applications; A Midterm report
year: 1998

id555instance
type: InCollection
type: Publication
abstract: Der Bereich der Wissensentdeckung aus großen Datenbeständen ('Knowledge Discovery in Databases', KDDS spielt eine immer größer werdende Rolle in der Wirtschaft. Ein wichtiges Akzeptanzkriterium bei der Einführung von Wissensentdeckungssverfahren in der Industrie bildet die Benutzerunterstützung. Insbesondere für ungeschulte Anwender, die mit einer Vielzahl von möglicherweise überaus komplexen Problemen konfrontiert sind, die mit Hilfe von Wissensentdeckungsverfahren gelöst werden könnten, stellt sich die Frage, wie diese Anwender unterstützt werden können. Frühere Erfahrungen aus den Bereichen Wissensakquisition und Knowledge Engineering weisen darauf hin, daß die Bereitstellung einer methodischen Vorgehensweise und das Wiederverwenden von bereits erfolgreich angewendeten (Teil-) Lösungen eine gute Basis bilden, um eine Benutzerunterstützung zu entwickeln. In unserem Ansatz spielt das Zerlegen von Aufgaben und die Anwendung von Problemlösungsmethoden ('Problem Solving Methods', PSMs) zusammen mit einer halbautomatischen Konfigurierung einer Anfangslösung für ein KDD-Problem eine zentrale Rolle. Diese Anfangslösung kann dem Anwender vorgeschlagen werden, der sie als Basis für weitere Tests und Verfeinerungen benutzen kann. Dieses Kapitel behandelt den Aspekt der Benutzerunterstützung bei der Lösung von KDD-Problemen basierend auf methodischen Arbeiten in den Bereichen KDD und Knowledge Engineering.
author: id55instance
author: id57instance
author: id68instance
booktitle: Data Mining: Theoretische Aspekte und Anwendungen. Beiträge zur Wirtschaftsinformatik
title: Benutzerunterstützung für Wissensentdeckung in Datenbanken
year: 1998

id556instance
type: InProceedings
type: Publication
abstract: Most enterprises agree that knowledge is an essential asset for success and survival on a increasingly competitive and global market. This awareness is one of the main reasons for the exponential growth of knowledge management in the past decade. Our approach to knowledge management is based on ontologies, and makes knowledge assets intelligently accessible to people in organizations. Most company-vital knowledge resides in the heads of people, and thus successful knowledge management does not only consider technical aspects, but also social ones. In this paper, we describe an approach to intelligent knowledge management that explicitly takes into account the social issues involved. The proof of concept is given by a large-scale initiative involving knowledge management of a virtual organization.
author: id67instance
author: id115instance
author: id174instance
booktitle: Proceedings of the Second International Conference on Practical Aspects of Knowledge Management (PAKM'98), Basel, Switzerland
month: October
title: Knowledge Management through Ontologies
year: 1998

id557instance
type: Article
type: Publication
abstract: Context dependency of knowledge models causes several problems: unreliability of knowledge-based systems, maintainability effort and limitations for sharing and reuse. Problem-solving methods are knowledge models of the reasoning process of knowledge-based systems. In the paper we present a method called inverse verification to deal with the situatedness of problem-solving methods. Inverse verification investigates the context dependency of a method by making underlaying assumptions explicit. It uses failed proof attempts as a search method for assumptions and analysis of these failures for constructing and refining assumptions.
author: id67instance
author: id177instance
journal: International Journal of Human-Computer Studies (IJHCS)
number: 49
title: Inverse Verification of Problem-Solving Methods
year: 1998

id558instance
type: Article
type: Publication
author: id67instance
author: id174instance
journal: International Journal of Human-Computer Studies (IJHCS)
title: Editorial: Problem-Solving Methods
volume: 49
year: 1998

id559instance
type: Article
type: Publication
abstract: The Knowledge Acquisition and Representation Language (KARL) combines a description of a knowledge-based system at the conceptual level (a so-called model of expertise) with a description at a formal and executable level. Thus, KARL allows the precise and unique specification of the functionality of a knowledge-based system independent of any implementational details. A KARL model of expertise contains the description of domain knowledge, inference knowledge, and procedural control knowledge. That is, it includes the specification of static and procedural knowledge. For capturing these different types of knowledge KARL offers corresponding modeling primitives which are based on Frame-logic and Dynamic Logic. A declarative semantics for a complete KARL model of expertise is given by a novel combination of these two types of logic. In addition, an operational definition of this semantics, which relies on a fixpoint approach, is given. This operational semantics defines the basis for the implementation of the KARL interpreter which includes appropriate algorithms for efficiently evaluating KARL specifications. This enables the evaluation of KARL specifications by means of testing.
author: id41instance
author: id57instance
author: id67instance
journal: IEEE Transcactions on Knowledge and Data Engineering
number: 4
pages: 527-550
title: The Knowledge Acquisition And Representation Language KARL
volume: 10
year: 1998

id55instance
type: InProceedings
type: Publication
abstract: The paper presents an ontology driven approach to bridging reference resolution. It presents a formal definition of an ontology and defines an inference mechanism based on this definition. The application domain of the approach are short texts of a biochemical nature.
author: id98instance
booktitle: Proceedings of the 5th International Workshop on Computational Semantics (IWCS-5), Tilburg, Netherlands
is about: id49instance
pages: 453-456
title: Ontology Driven Resolution of Bridging References
year: 2003

id560instance
type: Article
type: Publication
author: id11instance
author: id34instance
author: id57instance
author: id67instance
journal: LNCS, Springer
title: Ontobroker in a Nutshell
year: 1998

id561instance
type: Article
type: Publication
abstract: We investigate the formal specification of the reasoning process of knowledge-based systems. We analyse the corresponding parts of the KADS specification languages KARL and (ML)2 and deduce some general requirements for such specifications. The essence of these languages is that they integrate a declarative specification of inferences with control information. The languages differ in the way they achieve this integration and each of them has shortcomings. We propose a unifying semantical framework that integrates the core of the different solutions and overcomes their problems. We define a semantics and axiomatization with the logic MLCM (Modal Logic of Creation and Modification). MLCM was developed to reason about dynamic properties of the specification language COLD. MCL (Modal Change Logic) is a generalization of MLCM based on experience in applying MLCM to knowledge-based systems and specifications with evolving algebras. The main contribution of the paper is not to introduce yet another specification language. Instead we aim on four goals: (1) defining a framework for describing the dynamic reasoning behaviour of knowledge-based systems which integrates existing approaches; (2) defining a semantics for the specification of the dynamic reasoning behaviour of a knowledge-based system within the states as algebras setting of MLCM that overcomes several shortcomings and ad-hoc solutions of existing approaches; and (3) providing an axiomatization that enables the development of mechanised proof support. (4) Through conceptual and semantical clarity, we investigate the relationships to similar work in software engineering and database engineering opening possibilities for further cross-fertilization of these fields.
author: id67instance
author: id176instance
author: id345instance
journal: Data and Knowledge Engineering
number: 3
pages: 243-269
title: Modal Change Logic (MCL): Specifying the Reasoning of Knowledge-based Systems
volume: 26
year: 1998

id562instance
type: Article
type: Publication
abstract: The paper provides an approach for developing reliable knowledge-based systems. Its main contributions are: Specification is done at an architectural level that abstracts from a specific implementation formalism. The model of expertise of CommonKADS distinguish different types of knowledge and describes their interaction. Our architecture refines this model and adds an additional level of formalization. The Karlsruhe Interactive Verifier KIV is used for specifying and verifying such architectures. We have chosen KIV for four reasons: (1) it provides the formal means required for specifying the dynamics of knowledge-based systems (i.e., dynamic logic), (2) it provides compositional specifications, (3) it provides an interactive theorem prover, and (4) last but not least it comes with a sophisticated tool environment developed in several realistic application projects.
author: id67instance
author: id346instance
author: id347instance
author: id7instance
journal: Information Technology Management: An International Journal, special issue on Lessons Learned About Safety-Critical Software
number: 4
title: Formal support for Development of Knowledge-Based Systems
volume: 2
year: 1998

id563instance
type: Article
type: Publication
abstract: Problem-solving methods are means to describe the inference process of knowledge-based systems. During the last years, a number of these problem-solving methods have been identified that can be reused for building new systems. However, problem-solving methods require specific types of domain knowledge and introduce specific restrictions on the tasks that can be solved by them. These requirements and restrictions are assumptions that play a key role in reusing problem-solving methods, in acquiring domain knowledge, and in defining the problem that can be tackled by the knowledge-based systems. In the paper, we discuss the different roles, assumptions play in the development process of knowledge-based systems and provide a survey of assumptions used by diagnostic problem solving. We show how such assumptions introduce target and bias for goal-driven machine learning and knowledge discovery techniques.
author: id67instance
author: id174instance
is about: id7instance
journal: International Journal on Intelligent Systems (IJIS)
number: 8
pages: 715-748
title: The Role of Assumptions in Knowledge Engineering
volume: 13
year: 1998

id564instance
type: InProceedings
type: Publication
abstract: Developing software by selecting, adapting, combining, and integrating existing components instead of starting the system development process from scratch has become a key factor in economic software development. However, such a development process has to deal with four problems: First, components must be selected. Second, components must be adapted because they neither fit precisely the task that should be performed nor do they necessarily fit well to other selected components. Third, components must be combined and their interaction must be established. Fourth, it may be necessary to decompose complex problems into smaller subtasks for which components can be found. In this case, a general system frame must be established that enables to form an integrated system out of separate components. In this paper, we present our means to deal with these problems: brokers, adapters, connectors, and task structures. Although we discuss our approach in the context of problem-solving methods, some concepts are also applicable to software components in general.
author: id67instance
author: id174instance
booktitle: Proceedings of the 13th European Conference on Artificial Intelligence (ECAI-98), Brighton, UK
month: August
pages: 63-67
title: Key Issues for Automated Problem-Solving Methods Reuse
year: 1998

id565instance
type: InProceedings
type: Publication
abstract: During the last years, a number of formal specification languages for knowledge-based systems have been developed. Characteristic for knowledge-based systems are a complex knowledge base and an inference engine which uses this knowledge to solve a given problem. Specification languages for knowledge-based systems have to cover both aspects: they have to provide means to specify a complex and large amount of knowledge and they have to provide means to specify the dynamic reasoning behaviour of a knowledge-based system. This paper will focus on the second aspect, which is an issue considered to be unsolved. For this purpose, we have surveyed existing approaches in related areas of research. We have taken approaches for the specification of information systems (i.e., Language for Conceptual Modelling and \troll), approaches for the specification of database updates and the dynamics of logic programs (Transaction Logic and Dynamic Database Logic), and the approach of Abstract State Machines. This paper, which is a short version of a longer report, concentrates on the methodology of our comparison and on the conclusions we have drawn. The detailed description of the languages and a worked-out example have been removed from this version because of space limitations.
author: id67instance
author: id348instance
author: id349instance
author: id350instance
author: id351instance
author: id7instance
booktitle: Transaction and Change in Logic Databases
series: Lecture Notes in Computer Science (LNCS)
title: Specification of Dynamics for Knowledge-based Systems (extended abstract)
volume: 1472
year: 1998

id566instance
type: Article
type: Publication
abstract: In this paper we present the following view on problem-solving methods for knowledge-based systems: Problem-solving methods describe an efficient reasoning strategy to achieve a goal by introducing assumptions about the available domain knowledge and the required functionality. Assumptions, dynamic reasoning behavior, and functionality are the three elements necessary to characterize a problem-solving method. In the paper we elaborate this argument and introduce a framework for characterising and developing such efficient problem solvers.
author: id67instance
author: id175instance
journal: International Journal of Human-Computer Studies (IJHCS)
number: 2
pages: 181-215
title: The Essence of Problem-Solving Methods: Making Assumptions for Gaining Efficiency
volume: 48
year: 1998

id567instance
type: Article
type: Publication
abstract: The specification of reusable and sharable terminological knowledge is one of the key issues in now-a-day knowledge engineering. Proving formal languages with precise semantics and inference support can significantly support this activity. The aim of the workshop was to understand and to compare existing approaches developed in other research communities. We investigated research on description languages and research on object-oriented databases. Both provide the combination of rich terminological modelling primitives with well studied semantics and inference support. Their better understanding and their comparison that should highlight common aspects and differences were the goals of the workshop.
author: id11instance
author: id67instance
author: id63instance
journal: Data and Knowledge Engineering
number: 3
pages: 347-352
title: Workshop on Comparing Description and Frame Logics
volume: 25
year: 1998

id568instance
type: Article
type: Publication
abstract: This paper gives an overview about the development of the field of Knowledge Engineering over the last 15 years. We discuss the paradigm shift from a transfer view to a modeling view and describe two approaches which considerably shaped research in Knowledge Engineering: Role-limiting Methods and Generic Tasks. To illustrate various concepts and methods which evolved in the last years we describe three modeling frameworks: CommonKADS, MIKE, and PROTÉGÉ-II. This description is supplemented by discussing some important methodological developments in more detail: specification languages for knowledge-based systems, problem-solving methods, and ontologies. We conclude with outlining the relationship of Knowledge Engineering to Software Engineering, Information Integration and Knowledge Management.
author: id57instance
author: id67instance
author: id174instance
journal: Data & Knowledge Engineering
month: March
number: 1-2
pages: 161-198
title: Knowledge Engineering: Principles and Methods
volume: 25
year: 1998

id569instance
type: InCollection
type: Publication
abstract: m Folgenden werden unterschiedliche Vorgehensweisen zur Entwicklung wissensbasierter Systeme (WBS) aufgezeigt. In der Praxis noch weit verbreitet ist der Ansatz des Rapid Prototyping. Beim Rapid Prototyping wird informales Wissen unmittelbar in einer operationalen Wissensrepräsentationsform oder einer Programmiersprache implementiert. Eine andere Vorgehensweise setzt sog. Role Limiting Methoden voraus. Role Limiting Methoden sind ausführbare Werkzeuge, die bereits alles Wissen zur Lösung von Problemen eines speziellen Typs enthalten. Sie müssen nur noch um das bereichsspezifische Wissen angereichert werden. Bei modellbasierte Entwicklungsmethoden werden eine Reihe aufeinanderfolgender Modelle bis hin zum endgültigen System entwickelt, deren Detaillierungs- und Formalisierungsgrad zunimmt. Der Beitrag skizziert alle drei Vorgehensweisen und zeigt deren Vor- und Nachteile und deren Einsatzgebiete auf.
author: id41instance
author: id57instance
author: id67instance
booktitle: Vorgehensmodelle für die betriebliche Anwendungsentwicklung
pages: 168-188
title: Vorgehensmodelle für die Entwicklung wissensbasierter Systeme
year: 1998

id56instance
type: InProceedings
type: Publication
abstract: This paper introduces a conceptual framework for cooperation support in educational e-business applications. The main goal of this conceptual framework is to provide a systematical overview for the development and application of cooperation support in educational e-business applications. The foundations of educational e-business applications will be briefly explained at first. With respect to cooperation, the problems in existing approaches will be analyzed. The core elements of this framework, i.e. the different forms of cooperation, the organizational units of cooperation, diverse supporting services and their integration through spatial metaphors will be then described. This work is developed in the context of the project ViKar.
author: id1instance
author: id38instance
booktitle: Proc. of the International Coference on e-Business (ICEB2002), May 23-26 2002, Beijing, China
has project: id8instance
is about: id20instance
pages: 163-169
title: A Framework for the Cooperation Support in Educational e-Business Applications
year: 2002

id570instance
type: InProceedings
type: Publication
abstract: The value of the knowledge incorporated in an enterprise is more and more recognized and enterprises are defining knowledge management strategies to capitalize this assets. But up to now there is little methodological support for building, maintaining and using knowledge management systems (KMS). To remedy this we propose an enterprise reference scheme, that can be used to elicitate the requirements for building a KMS, to model parts of the KMS, and to study the impact of a KMS on an organization.
author: id11instance
author: id57instance
booktitle: Proceedings of the Modellierung '98, Münster
title: Towards an Enterprise Reference Scheme for Building Knowledge Management Systems
year: 1998

id571instance
type: InProceedings
type: Publication
abstract: The Knowledge Annotation Initiative of the Knowledge Acquisition Community (KA2) is an initiative to develop an ontology that models the knowledge acquisition community (its researchers, topics, products, etc.). This ontology will form the basis to annotate WWW documents of the KA community in order to enable intelligent access to these documents. KA2 is an open joint-initiative where the participants are actively involved in (i) a distributive ontological engineering process to model the knowledge acquisition community (a domain ontology), and (ii) annotating web pages relevant for the KA community (the instances of the domain ontology). KA2 aims at intelligent knowledge retrieval from the Web and automatic derivation of ``new'' knowledge. In other words, it aims at knowledge-based reasoning on the Web, as opposed to information retrieval. Another objective of the initiative is to get better insight in distributive ontological engineering processes.
author: id67instance
author: id174instance
booktitle: Proceedings of the International Conference on Formal Ontologies in Information Systems (FOIS-98), Trento, Italy
month: June
title: The Ontological Engineering Initiative (KA)2
year: 1998

id572instance
type: InProceedings
type: Publication
abstract: The World Wide Web (WWW) is currently one of the most important electronic information sources. However, its query interfaces and the provided reasoning services are rather limited. Ontobroker consists of a number of languages and tools that enhance query access and inference service of the WWW. The technique is based on the use of ontologies. Ontologies are applied to annotate web documents and to provide query access and inference service that deal with the semantics of the presented information. In consequence, intelligent brokering services for web documents can be achieved without requiring to change the semiformal nature of web documents.
author: id11instance
author: id34instance
author: id57instance
author: id67instance
booktitle: Proceedings of the 11th International Flairs Conference (FLAIRS-98), Sanibel Island, Florida
month: May
title: Ontobroker: The Very High Idea
year: 1998

id573instance
type: InProceedings
type: Publication
abstract: The World-Wide Web is changing the nature of software development to a distributive plug & play process. This requires a new way of managing software by so-called intelligent software brokers. The aim of the European IBROW3 project is to develop an intelligent brokering service that enables third party knowledge-component reuse through the World-Wide Web. Suppliers provide libraries of knowledge components adhering to some standard, and customers can consult these libraries -- through intelligent brokers -- to configure a knowledge system suited to their needs by selection and adaptation. IBROW3 integrates research on heterogeneous databases, interoperability and web technology with knowledge-system technology and ontologies. The aim is to develop a broker that can handle web requests for classes of knowledge system (e.g. diagnostic systems) by accessing libraries of reusable problem-solving methods on the Web, and selecting, adapting and configuring these methods in accordance with the domain at hand. The aim of this paper is to give a general overview of the project and to presents its main ideas and approach. IBROW3 has started on January 1, 1998 and thus we can only present preliminary results.
author: id11instance
author: id57instance
author: id67instance
author: id174instance
author: id180instance
author: id181instance
author: id311instance
author: id312instance
author: id64instance
booktitle: Proceedings of the 11th Workshop on Knowledge Acquisition, Modeling, and Management (KAW '98), Banff, Canada
month: April
title: IBROW3: An Intelligent Brokering Service for Knowledge-Component Reuse on the World-Wide Web
year: 1998

id574instance
type: InProceedings
type: Publication
abstract: The Knowledge Annotation Initiative of the Knowledge Acquisition Community, (KA)2 is an initiative to develop an ontology that models the knowledge acquisition community (its researchers, topics, products, etc.). This ontology will form the basis to annotate WWW documents of the KA community in order to enable intelligent access to these documents. (KA)2 is an open joint-initiative where the participants are actively involved in (i) a distributive ontological engineering process to model the knowledge acquisition community (a domain ontology), and (ii) annotating web pages relevant for the KA community (the instances of the domain ontology). (KA)2 aims at intelligent knowledge retrieval from the Web and automatic derivation of ``new'' knowledge. In other words, it aims at knowledge-based reasoning on the Web, as opposed to information retrieval. Another objective of the initiative is to get better insight in distributive ontological engineering processes.
author: id67instance
author: id174instance
booktitle: Proceedings of the 11th Workshop on Knowledge Acquisition, Modeling, and Management (KAW '98)
month: April
title: Community is Knowledge! in (KA)2
year: 1998

id575instance
type: InProceedings
type: Publication
abstract: The Knowledge Annotation Initiative of the Knowledge Acquisition Community (KA)2 is an initiative officially launched at EKAW-97 to develop an ontology that models the knowledge acquisition community (its researchers, topics, products, etc.). This ontology will form the basis to annotate WWW documents of the knowledge acquisition community in order to enable intelligent access to these documents. (KA)2 is an open joint-initiative where the participants are actively involved in (i) a distributive ontological engineering process to model the knowledge acquisition community (a domain ontology), and (ii) annotating webpages relevant for the KA community (the instances of the domain ontology). (KA)2 aims at "intelligent" knowledge retrieval from the Web and automatic derivation of "new" knowledge. In other words, it aims at knowledge-based reasoning on the Web, as opposed to the more usual information retrieval. Another objective of the initiative concerns a distributive ontological engineering process.
author: id11instance
author: id34instance
author: id67instance
author: id115instance
author: id174instance
author: id180instance
booktitle: Proceedings of the 11th Workshop on Knowledge Acquisition, Modeling, and Management (KAW '98), Banff, Canada
month: April
title: The Knowledge Annotation Initiative of the Knowledge Acquisition Community (KA)2
year: 1998

id576instance
type: InProceedings
type: Publication
abstract: Problem solving methods (PSMs) are domain-independent reasoning components, which specify patterns of behavior which can be reused across applications. While the availability of extensive PSM libraries and the emerging consensus on PSM specification languages indicate the maturity of the field, a number of important research issues are still open. In particular, very little progress has been achieved on foundational and methodological issues. Existing libraries of PSMs lack a clear theoretical basis and only provide weak support for the method development process, usually in the form of informal guidelines. In this paper we will address these issues by illustrating a framework which characterizes PSMs in terms of problem commitments, problem-solving paradigms and domain assumptions. This framework provides i) a theoretical foundation for situating PSM research and individual PSMs, as well as ii) an organization which allows us to characterize method development and selection as a process of navigating through a three-dimensional space (defined by the three components of our framework). Individual moves through this space are specified by means of adapters. In the paper we will illustrate these ideas in detail, with examples taken from parametric design problem solving.
author: id67instance
author: id180instance
booktitle: Proceedings of the 11th Workshop on Knowledge Acquisition, Modeling, and Management (KAW '98), Banff, Canada
month: April
title: Structured Development of Problem Solving Methods
year: 1998

id577instance
type: InProceedings
type: Publication
abstract: The World Wide Web (WWW) is currently one of the most important electronic information sources. However, its query interfaces and the provided reasoning services are rather limited. Ontobroker consists of a number of languages and tools that enhance query access and inference service in the WWW. It provides languages to annotate web documents with ontological information, to represent ontologies, and to formulate queries. The tool set of Ontobroker allows us to access information and knowledge from the web and to infer new knowledge with an inference engine based on techniques from logic programming. This article provides several examples that illustrate these languages and tools and the kind of service that is provided. We also discuss the bottlenecks of our approach that stem from the fact that the applicability of Ontobroker requires two time-consuming activities: (1) developing shared ontologies that reflect the consensus of a group of web users and (2) annotating web documents with additional information.
author: id11instance
author: id34instance
author: id57instance
author: id67instance
booktitle: Proceedings of the 11th Workshop on Knowledge Acquisition, Modeling, and Management (KAW '98), Banff, Canada
month: April
title: Ontobroker: Or How to Enable Intelligent Access to the WWW
year: 1998

id578instance
type: InProceedings
type: Publication
abstract: The World Wide Web (WWW) is currently one of the most important electronic information sources. However, its information retrieval mechanisms and the provided reasoning services are rather limited. Ontobroker consists of a number of languages and tools that enhance query access and inference service in the WWW. The paper provides a detailed description of how to use Ontobroker.
author: id11instance
author: id34instance
author: id57instance
author: id67instance
booktitle: Proceedings of the 11th Workshop on Knowledge Acquisition, Modeling, and Management (KAW '98), Banff, Canada
month: April
title: How to Use Ontobroker
year: 1998

id579instance
type: InProceedings
type: Publication
abstract: This paper describes research that is performed in the course of a project where a methodology for providing user support for KDD processes plays a central role. Although methodologically we aim at supporting the whole process of applying inductive learning techniques, the current paper focusses on a part of this process. The main issue in this paper is the support of data preprocessing for KDD. One of our experiences is that preprocessing of data possibly is the most time consuming part of Data Mining applications, and is almost always included in an application of machine learning. We give some insights in the metadata we calculate from a dataset as part of the method for user support and focus on how metadata can be used to guide preprocessing definition in combination with top down task decomposition. DCT (Data Characterisation Tool) is implemented in a software environment (Clementine). Some examples are given that resulted from running the UGM/DCT (User Guidance Module combined with DCT) on the data. Finally we will provide some examples based on UCI datasets and consider the improvements we made w.r.t. other approaches as well as what we gained using this extension to our User Guidance Module (UGM) for user support.
author: id68instance
author: id352instance
booktitle: Proceedings of the 13th European Conference on Artificial Intelligence (ECAI '98), Brighton, UK, August 23-28, 1998
month: August
pages: 430-434
title: Using a Data Metric for Offering Preprocessing Advice in Data Mining Applications
year: 1998

id57instance
type: InProceedings
type: Publication
abstract: In this work we’ll present an overview of all the quality-relevant data occurring in the context of e-learning applications. This compilation may be used as a basis for the modelling and implementation of quality information systems within the scope of e-learning. Firstly we’ll have a look on the state of the art related to this work. Then we’ll present different types of quality-relevant data, which should be the principal constituents every quality information system for e-learning applications should have. Afterwards we’ll close with a conclusion and an outlook.
author: id23instance
author: id38instance
booktitle: Proceedings of the Second Research Workshop of the European Distance and E-Learning Network (EDEN) "Research and Policy in Open and Distance Learning", Hildesheim, 21.-23.03.2002
has project: id8instance
is about: id20instance
month: March
pages: 137-140
title: Quality-Relevant Data in the Context of eLearning Applications
year: 2002

id580instance
type: InProceedings
type: Publication
abstract: The development of knowledge-based systems requires the availability of domain and problem-solving knowledge. This knowledge must be acquired from domain experts. For this purpose the paper proposes to use scenarios to enrich the set of acquisition techniques. Scenarios are known from requirements engineering and object oriented modelling where they are used to define a vision of a future system. In knowledge engineering their scope has to be extended, but their advantages (ease of understanding, support of communication, focus on relevant aspects etc.) still hold for knowledge-based systems.
author: id34instance
author: id57instance
booktitle: Proceedings of Information Technology and KNOWledge Systems (IT&KNOWS), a part of the 15th IFIP World Computer Congress, Vienna/Budapest
title: Use-Cases and Scenarios for Developing Knowledge Based Systems
year: 1998

id581instance
type: InProceedings
type: Publication
author: id1876instance
author: id2072instance
author: id23instance
author: id38instance
author: id163instance
author: id210instance
author: id211instance
author: id212instance
author: id213instance
author: id214instance
author: id217instance
author: id218instance
booktitle: INFORMATIK 2004 - Informatik verbindet, GI-Jahrestagung, Ulm
month: September
pages: 208-213
series: LNI
title: Entwicklung eines Informationsportals für die Informatik
volume: 50
year: 2004

id582instance
type: InProceedings
type: Publication
address: Luxemburg
author: id1876instance
author: id2072instance
author: id23instance
booktitle: Informationssysteme im E-Business und E-Government (EMISA 2004)
month: October
pages: 48-59
series: LNI
title: RDF-basierte Integration von E-Learning-Metadaten in einem Informationsportal
volume: 56
year: 2004

id583instance
type: Publication
type: TechnicalReport
author: id20instance
author: id98instance
author: id353instance
has project: id42instance
has project: id49instance
is about: id49instance
month: July
title: From Tables to Frames
year: 2004

id584instance
type: InProceedings
type: Publication
abstract: In this paper we present the language G-KARL. G-KARL allows to describe the static, the functional and the dynamic view to a knowledge based system (kbs) graphically. This graphical representation makes the communication between the expert and the knowledge engineer easier. The underlying conceptual model for G-KARL is derived from the KADS model of expertise. Every primitive of G-KARL may be mapped to a language primitive of the language KARL (Knowledge Acquisition and Representation Language). KARL is a formal language, so every primitive of G-KARL has a defined formal semantics. KARL is an executable language, so G-KARL is also executable which supports the validation of the model of expertise by testing and thus allows the model of expertise to be built by prototyping. G-KARL allows to visualize the execution of this model which additionally supports the validation process. While G-KARL contains well established graphical means for the different views like the OMT-notation for the static view, data flow diagrams for the functional view and program flow diagrams for the dynamic view, G-KARL also offers new graphical primitives for specifying elementary inference actions within data flow diagrams and for specifying sufficient and necessary conditions within the static view. In KARL these model elements are described by L-KARL, a logical language enriched by additional modeling primitives.
author: id41instance
author: id57instance
booktitle: Proceedings der 4. Deutschen Tagung "Wissensbasierte Systeme", XPS'97, Bad Honnef, 5.-7. März 1997
month: March
title: G-KARL, A graphical, formal, and executable specification language
year: 1997

id585instance
type: InProceedings
type: Publication
abstract: The paper introduces an approach for the specification and verification of knowledge-based systems that combines conceptual and formal techniques. We identify four elements of the specification of a knowledge-based system: a task definition, a problem-solving method, a domain model, and an adapter that relates the other elements. We present abstract data types and a variant of dynamic logic as formal means to specify and verify these different elements. As a consequence of our conceptual model we can decompose the overall verification task of the knowledge-based systems into different proof obligations. Each proof obligation deals with a different aspect of the entire system. The use of the conceptual model in specification and verification improves understandability and reduces the effort for both activities. The modularization enables reuse of specifications and proofs. A knowledge-based system can be build by combing and adapting different components.
author: id67instance
author: id176instance
booktitle: Proceedings of the 9th International Conference on Software Engineering & Knowledge Engineering (SEKE'97), Madrid, Spain, June 18-20, 1997
month: June
title: Specifying Knowledge-Based Systems with Reusable Components
year: 1997

id586instance
type: InProceedings
type: Publication
abstract: The rapid-prototyping approach of the early 1980's failed to deliver high-quality knowledge-based systems. As a reaction, in the early 90's, there has been a large activity in the knowledge engineering community to define methodologies for principled knowledge-based system development. These methodologies (e.g., CommonKADS, MIKE, VITAL, TASK) succeeded in organising the development process as a set of intermediate models of the functionality of the system to be built, to end in the final implementation. Feedback from industries that use these methodologies in practice reveals, however, that building a high-quality implemented system remains a difficult and error-prone process. The main reason for this is that, although the structure of the development process is rather well understood, the transition process is less clear. In this paper, we outline an approach for assuring the transition of a conceptual model into a final implementation which satisfies particular quality criteria. The approach is based on identifying adequate transition paths and activities on models in order to achieve particular quality criteria. An essential part of the approach is formed by methodological guidelines and tool support such as change-management systems, reusable libraries, translators, decision support tools, and support for validation and verification.
author: id57instance
author: id67instance
author: id174instance
author: id180instance
author: id312instance
author: id354instance
booktitle: Proceedings of the 9th International Conference on Software Engineering & Knowledge Engineering (SEKE'97), Madrid, Spain, June 18-20, 1997
month: June
title: Making Knowledge Engineering Technology Work
year: 1997

id587instance
type: InProceedings
type: Publication
abstract: Knowledge Discovery in Databases (KDD) is currently a hot topic in industry and academia. Unfortunately, the focus of research behind most emerging products is on underlying algorithms and modelling techniques. The main bottleneck for KDD applications is not the lack of techniques. The challenge is to exploit and combine existing algorithms effectively. In this paper, we describe the project Citrus which addresses these practically relevant issues. Starting from a commercially available system, we develop a scalable, extensible tool inherently based on the view of KDD as an interactive and iterative process. In this paper we sketch the main components of this system, namely an information manager for effective retrieval of data and results, an execution server for efficient execution, and a process support interface for guiding the user through the process.
author: id55instance
author: id68instance
author: id355instance
author: id356instance
author: id357instance
author: id358instance
author: id359instance
author: id360instance
booktitle: Proceedings of the 1st European Symposium on Principles of Data Mining and Knowledge Discovery, Trondheim, Norway
month: June
title: Towards Process-Oriented Tool Support for KDD
year: 1997

id588instance
type: Article
type: Publication
abstract: Mit Fragen der methodischen Unterstützung des Entwicklungsprozesses von Softwaresystemen beschäftigen sich verschiedene Teildisziplinen der Informatik. Speziell sind hier das Software Engineering, das Information Systems Engineering und das Knowledge Engineering zu nennen. Während das Software Engineering insbesondere Beiträge zur Beschreibung des Entwicklungsprozesses durch Vorgehensmodelle und zur Beschreibung (nicht-)funktionaler Aspekte von Softwaresystemen geliefert hat, beschäftigte man sich im Information Systems Engineering zunächst primär mit der Modellierung statischer Aspekte von Informationssystemen durch semantische Datenmodelle. In den zurückliegenden Jahren gewannen dynamische Aspekte jedoch immer mehr an Bedeutung. Im Knowledge Engineering wurden ursprünglich hauptsächlich Fragen der methodischen Untersützung der Wissenserhebung untersucht, in jüngster Zeit bekamen jedoch Methoden zur Wissensmodellierung und -wiederverwendung ein immer stärkeres Gewicht. Bei einer näheren Betrachtung dieser Fachgebiete zeigt es sich, daß einerseits eine Vielzahl gemeinsamer Fragestellungen und Lösungsansätze existiert, andererseits aber auch sehr unterschiedliche Problemstellungen untersucht werden. [ . . . ] Um einen systematischen Vergleich der Methodiken zu ermöglichen, erarbeitete die Arbeitsgruppe einen Kriterienkatalog, mit dem charakteristische Eigenschaften einer Methodik erfaßt werden können. Dieser Kriterienkatalog wird nachfolgend verwendet, um jede der vier Methodiken detailliert zu charakterisieren. [aus der Einleitung]
author: id1876instance
author: id1960instance
author: id41instance
author: id57instance
author: id361instance
author: id362instance
author: id363instance
author: id364instance
author: id365instance
journal: EMISA-Forum
month: July
pages: 11-58
title: Abschlußbericht der GI-Arbeitsgruppe "Vergleichende Analyse von Problemstellungen und Lösungsansätzen in den Fachgebieten Information Systems Engineering, Software Engineering und Knowledge Engineering"
volume: 2
year: 1997

id589instance
type: InProceedings
type: Publication
abstract: An important success factor for the field of KDD lies in the development and integration of methods for supporting the construction and execution of KDD processes. Crucial aspects in this context are the (incremental) development of a precise problem description, a decomposition of this top level problem description into manageable and compatible subtasks which can be reused, and a selection and combination of adequate algorithms for solving these subtasks. In this paper we describe an approach for supporting the systematic decomposition of a KDD process into subtasks and for selecting appropriate problem-solving methods and algorithms for solving these subtasks. Our approach has been partially integrated into the CLEMENTINE system and has been used to develop a real world application in the area of prediction.
author: id55instance
author: id57instance
author: id68instance
booktitle: Proceedings of the 3rd International Conference on Knowledge Discovery in Databases (KDD'97)
title: A Guided Tour through the Data Mining Jungle
year: 1997

id590instance
type: InProceedings
type: Publication
abstract: Problem-solving methods (PSMs) for knowledge-based systems need to make assumptions to provide effective and efficient problem solving: assumptions about the scope of the problem they should solve and assumptions about the domain knowledge they can use as a resource for their reasoning process. If these assumptions are made explicit they can improve the reusability of PSMs by guiding the selection and refinement process of problem-solving methods for a given application and by defining goals for the acquisition process of domain knowledge. However, making the underlying assumptions explicit is not an easy task. The goal of our paper is to contribute to solve this problem. The main idea is to construct mathematical proofs and analysis of their failure as a systematic means for forming assumptions. Tool support is provided by adapting the Karlsruhe Interactive Verifier (KIV) for our purpose. KIV is an interactive theorem prover that returns with open goals if a proof could not be completed. These open goals can be used to derive the assumptions we are looking for.
author: id67instance
author: id177instance
booktitle: Workshop Proceedings Problem-solving Methods for Knowledge-based Systems in Connection with the Fifteenth International Joint Conference on Artificial Intelligence (IJCAI'97), Nagoya, Japan, August 23-25, 1997
month: August
title: Hunting for Assumptions as Developing Method for Problem-Solving Methods
year: 1997

id591instance
type: InProceedings
type: Publication
abstract: We present the architecture of an intelligent broker for enabling the use of problem-solving methods via the World Wide Web (WWW). The core component of such a broker is realised by an ontologist and an adapter. Ontologies mediate between domain-specific requirements and knowledge, task-specific problem descriptions and method-specific terms describing the competence and requirements of the reasoning components. The ontological reasoning for relating the different ontologies is supported by the ontologies. Adapters are necessary to provide domain knowledge and case data to problem-solving methods and to rephrase the output of problem-solving methods into domain-specific terms. Therefore, the ontologist mediates the selection and adaptation process of PSMs whereas the adapter mediates the execution of them.
author: id67instance
booktitle: Workshop Proceedings Problem-solving Methods for Knowledge-based Systems in Connection with the Fifteenth International Joint Conference on Artificial Intelligence (IJCAI'97), Nagoya, Japan, August 23-25, 1997
month: August
title: An Ontology-based Broker: Making Problem-Solving Method Reuse Work
year: 1997

id592instance
type: InProceedings
type: Publication
abstract: The World Wide Web (WWW) can be viewed as the largest knowledge-based system that has ever existed. However, its support in automated inference is very limited. We present ontologies as means to enrich web documents for representing semantic information for overcoming this bottleneck. Ontologies enable informed search for information as well as the derivation of additional knowledge that is not directly represented as facts in the WWW. Such an ontology can be used by a subgroup of web users that share a common point of interest like it is known from newsgroups in the internet. Therefore, we propose ontologies to be used to annotate intranets or certain subnets within the entire WWW. The paper presents such an ontology that can be used to annotate web documents of a research community. In fact, we have chosen the knowledge acquisition community. Further, an architecture of an ontology-based broker is sketched that can make use of these ontologies for the automatic derivation of knowledge.
author: id34instance
author: id57instance
author: id67instance
booktitle: Proceedings of the International Workshop Intelligent Information Integration during the 21st German Annual Conference on Artificial Intelligence (KI'97), Freiburg, Germany, September 9-12, 1997
month: September
title: Semantically Enriched Subnets of the WWW
year: 1997

id593instance
type: InProceedings
type: Publication
abstract: In recent years the demand on business process modelling (BPM) became apparent in many different communities. To provide a unifying framework for different needs on enterprise modelling we define an enterprise reference scheme and show how the development of knowledge based systems can be incorporated in such a framework. From this framework conclusions for tool support are drawn.
author: id11instance
author: id34instance
author: id57instance
author: id182instance
booktitle: Proceedings of the 10th European Workshop on Knowledge Acquisition, Modeling, and Management (EKAW'97)
title: An Enterprise Reference Scheme for Integrating Model Based Knowledge Engineering and Enterprise Modelling
year: 1997

id594instance
type: InProceedings
type: Publication
abstract: We present a structured approach for developing problem-solving methods for knowledge-based systems. We view this process as a stepwise combination process of methods and adapters. We start from very generic search strategies with very general data structures and add adapters that refine the states of the search process, that refine state transitions, and that add assumptions necessary to link the competence of a method with given problem definitions and domain knowledge. The paper provides three novel contributions to knowledge engineering. First, we provide a structured approach for the development and adaptation of problem-solving method. Second, we show how the usability-reusability trade-off of task-specific versus task-independent problem-solving methods can easily be overcome by the virtual existence of specific methods. Third, we provide the concept of an integrated library combining reusable problem definitions, problem-solving methods, and adapters.
author: id67instance
booktitle: Proceedings of the 10th European Workshop on Knowledge Acquisition, Modeling, and Management (EKAW'97)
title: The Tower-of-Adapter Method for Developing and Reusing Problem-Solving Methods
year: 1997

id595instance
type: InProceedings
type: Publication
abstract: In recent years two main technologies for knowledge sharing and reuse have emerged: ontologies and problem solving methods (PSMs). Ontologies specify reusable conceptualizations which can be shared by multiple reasoning components communicating during a problem solving process. PSMs describe in a domain-independent way the generic reasoning steps and knowledge types needed to perform a task. Typically PSMs are specified in a task-specific fashion, using modelling frameworks which describe their control and inference structures as well as their knowledge requirements and competence. In this paper we discuss a novel approach to PSM specification, which is based on the use of formal ontologies. In particular our specifications abstract from control, data flow and other dynamic aspects of PSMs to focus on the logical theory associated with a PSM (method ontology). This approach concentrates on the competence and knowledge requirements of a PSM, rather than internal control details, thus enabling black-box-style reuse. In the paper we also look at the nature of PSM specifications and we show that these can be characterised in a task-independent style as generic search strategies. The resulting "modelling gap" between method-independent task specifications and task-independent method ontologies can be bridged by constructing the relevant adapter ontology, which reformulates the method ontology in task-specific terms. An important aspect of the ontology-centred approach described here is that, in contrast with other characterisations of task-independent PSMs, it does away with the simple, binary distinction between weak and strong methods. We argue that any method can be defined in either task-independent or task-dependent style and therefore such distinction is of limited utility in PSM reuse. The differences between PSMs which affect reuse concern the ontological commitments which they make with respect to domain knowledge and goal specifications.
author: id11instance
author: id67instance
author: id180instance
author: id181instance
booktitle: Proceedings of 10th European Workshop on Knowledge Acquisition, Modeling, and Management (EKAW`97)
title: Using Ontologies For Defining Tasks, Problem-Solving Methods and Their Mapping
year: 1997

id596instance
type: InProceedings
abstract: In the last years a common notion of a Problem-Solving Method (PSM) emerged from different knowledge engineering frameworks. As a generic description of the dynamic behaviour of knowledge based systems PSMs are favored subjects of reuse. Up to now, most investigations on the reuse of PSMs focus on static features and methods as objects of reuse. By this, they ignore a lot of information of how the PSM was developed that is, in principle, entailed in the different parts of a conceptual model of a PSM. In this paper the information of the different parts of PSMs is reconsidered from a reuse process point of view. A framework for generalized problem-solving methods is presented that describes the structure of a category of methods based on family resemblances. These generalized methods can be used to structure libraries of PSMs and - in the process of reuse - as a means to derive an incarnation, i.e. a member of its family of PSMs. For illustrating the ideas, the approach is applied to the task rsp. problem type of parametric design.
author: id1960instance
booktitle: Proceedings of 10th European Workshop on Knowledge Acquisition, Modeling, and Management (EKAW`97)
title: Reuse of Problem-Solving Methods and Family Resemblances
year: 1997

id597instance
type: Article
type: Publication
author: id67instance
author: id174instance
author: id366instance
journal: International Journal of Human-Computer Studies
number: 4
title: PSMs do IT! - Summary of track on Sharable and Reusable Problem-Solving Methods of the 10th KAW'96, Banff, Canada
volume: 47
year: 1997

id598instance
type: InProceedings
type: Publication
abstract: During the last years, a number of formal specification languages for knowledge-based systems have been developed. Characteristic for knowledge-based systems are a complex knowledge base and an inference engine which uses this knowledge to solve a given problem. Specification languages for knowledge-based systems have to cover both aspects: they have to provide means to specify a complex and large amount of knowledge and they have to provide means to specify the dynamic reasoning behaviour of a knowledge-based system. This paper will focus on the second aspect, which is an issue considered to be unsolved. For this purpose, we have surveyed existing approaches in related areas of research. We have taken approaches for the specification of information systems (i.e., Language for Conceptual Modelling and Troll), approaches for the specification of database updates and the dynamics of logic programs (Transaction Logic and Dynamic Database Logic), and the approach of Evolving Algebras. This paper, which is a short version of a longer report, concentrates on the methodology of our comparison and on the conclusions we have drawn. The actual comparison between the languages has been removed from this version because of space limitations.
author: id67instance
author: id348instance
author: id349instance
author: id350instance
author: id351instance
author: id7instance
booktitle: Proceedings of the Workshop on (Trans)Actions and Change in Logic Programming and Deductive Databases (DYNAMICS '97). Post-Conference of International Logic Programming Symposium (ILPS-97), Port Jefferson, Long Island N.Y., USA, October 17, 1997
title: Specification of Dynamics for Knowledge-based Systems
year: 1997

id599instance
type: InProceedings
type: Publication
abstract: Building knowledge-based systems from reusable elements is a key factor in their economic development. However, one has to ensure that the assumptions and functionality of the reused building block fit to each other and the specific circumstances of the actual problem and knowledge. We use the Karlsruhe Interactive Verifier (KIV) for this purpose. We show how the verification of conceptual and formal specifications of knowledge-based systems can be done with it. KIV was originally developed for the verification of procedural programs but it fits well for verifying knowledge-based systems. Its specification language is based on algebraic specification means for the functional specification of components and dynamic logic for the algorithmic specification. It provides an interactive theorem prover integrated into a sophisticated tool environment supporting aspects like the automatic generation of proof obligations, generation of counter examples, proof management, proof reuse etc. Such a support is essential in making verification of complex specifications feasible. We provide some examples on how to specify and verify tasks, problem-solving methods, and their relationships. An earlier version was appeared as: Specifying and Verifying Knowledge-Based Systems with KIV. In Proceedings of the European Symposium on the Validation and Verification of Knowledge Based Systems EUROVAV-97, Leuven Belgium, June 26-28, 1997.
author: id67instance
author: id177instance
booktitle: Proceedings of the 12th IEEE International Conference on Automated Software Engineering (ASEC-97), Incline Village, Nevada, November 3-5, 1997
month: November
title: Using KIV to Specify and Verify Architectures of Knowledge-Based Systems
year: 1997

id59instance
type: InProceedings
type: Publication
abstract: Collaboration in virtual teams and media competence are in great demand in today’s business life. With the aid of a new form of seminars we aim to give our students these qualifications. In this work we present our teleseminar scenario, where students can practice new collaboration technologies in a teaching scenario integrating groupware and videoconferencing. After describing our teleseminar scenario both in technical and organizational aspects, we evaluate them, in order to give recommendations and to present our improvement plans.
author: id21instance
author: id23instance
author: id38instance
booktitle: Proceedings of Networked Learning 2002. Berlin, 01.-04.05.2002.
has project: id19instance
is about: id20instance
title: Learning Virtual Collaboration in Teleseminars
year: 2002

id5instance
type: Article
type: Publication
abstract: Community web sites exhibit two dominating properties: They often need to integrate many different in-formation sources and they require an adequate web site management system. SEAL (SEmantic portAL) is a conceptual model that exploits ontologies for fulfilling the requirements set forth by these two prop-erties at once. The ontology provides a high level of sophistication for web information integration as well as for web site management. We describe the SEAL conceptual architecture as well as its current implementation in KAON.
author: id20instance
author: id40instance
author: id50instance
author: id57instance
author: id6instance
has project: id10instance
has project: id14instance
has project: id4instance
has project: id58instance
is about: id100instance
is about: id107instance
is about: id10instance
is about: id11instance
is about: id52instance
is about: id68instance
is about: id79instance
is about: id80instance
is about: id8instance
is about: id9instance
journal: IEEE Data Engineering Bulletin
number: 1
pages: 10-17
title: SEAL - Tying Up Information Integration and Web Site Management by Ontologies
volume: 25
year: 2002

id600instance
type: Article
type: Publication
abstract: Reusable problem-solving methods improve knowledge engineering by allowing developers to design reasoners quickly from pre-existing components. An important factor for successful method reuse is the specification of preexisting methods and support in their task- and domain-specific refinements. The PROTÉGÉ-II approach allows developers to select methods from a library, and to map the methods to a domain ontology. KARL is a formal and executable knowledge-specification language that provides modeling primitives for expressing problem-solving methods. In this paper, we show how the code and informal descriptions of problem-solving methods in PROTÉGÉ-II can be supplemented with the formal method definitions in KARL. For our case study, we have chosen two methods from the PROTÉGÉ-II framework: chronological backtracking and its task specific refinement: the board-game method. In the paper, we give insights in the refinement of general-purpose methods to task-specific (i.e., strong) problem-solving methods. We show further, how a task-specific method can be adapted to a given domain and application. In both cases this is achieved by introducing ontological commitments over the terminological structure of the entities used to describe the states of the reasoning process of a method.
author: id57instance
author: id67instance
author: id11instance
author: id367instance
journal: International Journal of Expert Systems: Research & Applications
number: 4
title: Conceptual and Formal Specifications of Problem-Solving Methods
volume: 9
year: 1996

id601instance
type: InProceedings
type: Publication
abstract: The paper describes the MIKE (Model-based and Incremental Knowledge Engineering) approach for the development of knowledge-based systems (kbs). It integrates semiformal specification techniques, formal specification techniques, and prototyping into a coherent framework. This allows the domain and task model of a kbs to be described on different formalization levels. All activities in the building process are embedded in a cyclic life cycle model. For the semiformal representation we use a hypermedia-based formalism which serves as a communication basis between expert and knowledge engineer during knowledge acquisition. The semiformal knowledge representation is also the basis for formalization, resulting in a formal and executable model of expertise specified in the Knowledge Acquisition and Representation Language (KARL). Since KARL is executable the model of expertise can be developed and validated by prototyping. A smooth transition from a semiformal to a formal specification and further on to design is achieved as all the description techniques rely on the same conceptual model to describe the functional and non-functional aspects of the system. Thus, the system is thoroughly documented at different description levels, each of which focuses on a distinct aspect of the entire development effort. Traceability of requirements is supported by linking the different models to each other. Though the MIKE approach aims at supporting the building process of kbs, its principles and methods apply also to the development of non-knowledge-based software systems, e.g. information systems.
author: id41instance
author: id57instance
author: id67instance
booktitle: Domain Knowledge for Interactive System Design, Proceedings of IFIP WG 8.1/13.2 Joint Working Conference, Geneva, May 1996
month: May
title: Domain and Task Modeling in MIKE
year: 1996

id602instance
type: InProceedings
type: Publication
abstract: A topic in the field of knowledge acquisition is the reuse of components that are described at the knowledge level. Problems concern the description, indexing and retrieval of components. In our case there is the additional feature of integrating so-called automated building blocks in a knowledge level description. This paper describes what knowledge level descriptions of components for reuse should look like, and proposes a way to describe assumptions and requirements that are to be made explicit. In the paper an extension of the "normal" knowledge acquisition setting is made in the direction of machine learning components and their description and integration at the knowledge level.
author: id1960instance
author: id68instance
booktitle: Position Paper Collection of the European Knowledge Acquisition Workshop (EKAW '96), Matlock Bath, U.K., May 14 - 17, 1996
month: May
title: Describing and Integrating Competence Theories for Problem Solving Components and Machine Learning Algorithms
year: 1996

id603instance
type: InProceedings
type: Publication
abstract: Performing the complex task of Knowledge Discovery in Databases (KDD) requires a break-down of the task-complexity to enable the possibility of performing the KDD-task. Since even more techniques will appear in the future that can solve a variety of KDD-problems, a domain expert that wants to analyse his domain should have the means to work with tools that integrate several of these techniques as well as the techniques themselves. In this paper a framework is proposed for a strategy component that is to be used for a KDD-system that can guide users in breaking down the complexity of a typical KDD-task and supports him in selecting and using several ML-techniques. The goals of such a guidance component are reuse of (predefined) taskcomponents in order to decrease development time and to simplify the process of decomposing a KDD-task, task-oriented planning in order to break down complexity of a typical KDD-task and supporting post-processing (evaluation) of KDD-processes.
author: id68instance
booktitle: Proceedings of the 2nd International Conference on Knowledge Discovery in Databases (KDD'96), Portland, Oregon, August 2 - 4, 1996
month: August
title: Planning tasks for Knowledge Discovery in Databases; Performing Task-Oriented User-Guidance
year: 1996

id604instance
type: InProceedings
type: Publication
abstract: The paper presents an approach for using a bidirectional search strategy for inductively learning clauses in a restricted first-order language. The learning target is to find a set of goal clauses that describe the true ground facts of a given target predicate. In our example setting we further assume that the background knowledge is also given in the form of true (and false) ground facts of each background predicate. By fixing the number of variables allowed in the derived clauses we show that no explicit negative goal facts are needed in the case of the closed-world assumption since the rules are evaluated from the premise to the head rather than binding the variables of the goal literal first. As a consequence we get an efficient ILP algorithm that tries to minimize the tuples of variable substitutions stored at each step of our covering approach.
author: id35instance
booktitle: Proceedings of the MLnet Familiarization Workshop on Data Mining with Inductive Logic Programming (ILP for KDD) held in conjunction with the 13th International Conference on Machine Learning (ICML '96), Bari, Italy, July 2, 1996
month: July
title: A Bidirectional ILP Algorithm
year: 1996

id605instance
type: InProceedings
type: Publication
abstract: The paper presents an approach for using a bidirectional search strategy for inductively learning clauses in a restricted first-order language. The learning target is to find a set of goal clauses that describe the true ground facts of a given target predicate. In our example setting we further assume that the background knowledge is also given in the form of true (and false) ground facts of each background predicate. By fixing the number of variables allowed in the derived clauses we show that no explicit negative goal facts are needed in the case of the closed-world assumption since the rules are evaluated from the premise to the head rather than binding the variables of the goal literal first. As a consequence we get an efficient ILP algorithm that tries to minimize the tuples of variable substitutions stored at each step of our covering approach.
author: id35instance
booktitle: Beiträge zum 9. Fachgruppentreffen Maschinelles Lernen der GI Fachgruppe 1.1.3, Chemnitz, August 1996, Chemnitzer Informatik-Berichte CSR-96-06, Fakultät für Informatik, Technische Universität Chemnitz-Zwickau
month: August
pages: 118-123
title: A Bidirectional ILP Algorithm
year: 1996

id606instance
type: InProceedings
type: Publication
abstract: New KARL (Knowledge Acquisition and Representation Language) allows to specify all parts of a problem-solving method (PSM). It is a formal language with a well-defined semantics and thus allows to represent PSMs precisely and unambiguously yet abstracting from implementation detail. In this paper it is shown how the language KARL has been modified and extended to New KARL to better meet the needs for the representation of PSMs. Based on a conceptual structure of PSMs new language primitives are introduced for KARL to specify such a conceptual structure and to support the configuration of methods. An important goal for this extension was to preserve three important properties of KARL: to be (i) a conceptual, (ii) a formal, and (iii) an executable language.
author: id11instance
author: id1960instance
author: id41instance
author: id57instance
booktitle: Proceedings of the 10th Knowledge Acquisition for Knowledge-Based Systems Workshop (KAW'96), Banff, Canada, November 9 - 14, 1996
month: November
title: Modeling Problem-Solving Methods in New KARL
year: 1996

id607instance
type: InProceedings
type: Publication
abstract: Recently the demand on business process modelling (BPM) became apparent in many different communities. To provide a unifying framework we propose an approach to integrate (well known) knowledge engineering techniques into a business process modelling context. We see knowledge based systems as one possibility (among others) to implement (re-engineered) business processes or parts thereof. Our framework is exemplified by integrating the MIKE approach (Model based and Incremental Knowledge Engineering) with ARIS (ARchitecture of Information Systems), a prominent representative of business process modelling. An important aspect of our framework is a proposal for linking business process models with a model of expertise.
author: id11instance
author: id34instance
author: id57instance
booktitle: Proceedings of the 10th Knowledge Acquisition for Knowledge-Based Systems Workshop (KAW'96), Banff, Canada, November 9 - 14, 1996
has project: id9instance
month: November
title: A Unifying View on Business Process Modelling and Knowledge Engineering
year: 1996

id608instance
type: InProceedings
type: Publication
abstract: Problem-solving methods model the problem-solving behavior of knowledge-based systems. The PROTÉGÉ-II framework includes a library of problem-solving methods that can be viewed as reusable components. For developers to use these components as building blocks in the construction of methods for new tasks, they must configure the components to fit with each other and with the needs of the new task. As part of this configuration process, developers must relate the ontologies of the generic methods to the ontologies associated with other methods and submethods. We present a model of method configuration that incorporates the use of several ontologies in multiple levels of methods and submethods, and we illustrate the approach by providing examples of the configuration of the board-game method.
author: id57instance
author: id67instance
author: id11instance
author: id367instance
author: id368instance
author: id369instance
booktitle: Proceedings of the 10th Knowledge Acquisition for Knowledge-Based Systems Workshop (KAW'96), Banff, Canada, November 9 - 14, 1996
is about: id1instance
title: Ontologies and the Configurations of Problem-Solving Methods
year: 1996

id609instance
type: InProceedings
type: Publication
abstract: Most papers in model-based diagnosis and most papers in knowledge engineering on problem-solving methods focus on the description of reasoning strategies and discuss their underlying assumptions as a side-aspect. We take a complementary point of view by focusing on these underlying assumptions as these assumptions play an important role: They are necessary to characterise the precise competence of a problem-solving method in terms of the tasks that can be solved by it and in terms of the domain knowledge that is required by it. They are necessary to enable tractable problem solving for complex problems. Their introduction and the refinement of existing assumptions can be used to develop new problem-solving methods or to adapt existing ones according to task and domain-specific circumstances of a given application. For this purpose, one require a framework for dealing with these assumptions. The paper makes a step in this direction by summarizing the assumptions that can be found in the literature on component-based diagnosis. The main contribution of the paper is to collect these assumptions, to make their role for the reasoning process explicit, and to systematize these assumptions by making explicit their relationships.
author: id67instance
author: id174instance
booktitle: Proceedings of the 10th Banff Knowledge Acquisition for Knowledge-Based Systems Workshop (KAW-96), Banff, Canada, November 9-14, 1996
month: November
title: Assumptions in model-based diagnosis
year: 1996

id60instance
type: InProceedings
type: Publication
abstract: Current courseware is often tightly coupled with a specific e-learning system for its access and presentation. We identify the system components and their interaction in creating, publishing, accessing and executing platform independent learning content. We present a system model aimed at using inexpensive of-the-shelf components to supply the core functionality while being ready to integrate flexible and powerful content management and e-learning support systems in future.
author: id65instance
author: id40instance
author: id41instance
booktitle: Proc. of the World Conference on Educational Multimedia, Hypermedia & Telecommunications(edmedia 2002), June 24-29 2002, Denver, Colorado, USA
has project: id7instance
is about: id20instance
pages: 2040-2041
title: XML based content and its integration into existing e-learning solutions: results and consequences of a survey
year: 2002

id610instance
type: InProceedings
type: Publication
abstract: The paper introduces a formal approach for the specification and verification of knowledge-based systems. We identify different elements of such a specification: a task definition, a problem-solving method, a domain model, an adapter, and assumptions that relate these elements. We present abstract data types and a variant of dynamic logic as formal means to specify these different elements. Based on our framework we can distinguish several verification tasks. In the paper, we discuss the application of the Karlsruhe Interactive Verifier (KIV) for this purpose. KIV was originally developed for the verification of procedural programs but it fits well for our approach. We illustrate the verification process with KIV and show how KIV can be used as an exploration tool that helps to detect assumptions necessary to close the gap between the task definition and the competence of a problem-solving method.
author: id67instance
author: id176instance
author: id177instance
author: id312instance
booktitle: Proceedings of the 10th Banff Knowledge Acquisition for Knowledge-Based Systems Workshop (KAW-96), Banff, Canada, Novemver 9-14, 1996
month: November
title: Specification and Verification of Knowledge-Based Systems
year: 1996

id611instance
type: InProceedings
type: Publication
abstract: The paper introduces a formal approach for the specification and verification of knowledge-based systems. We identify different elements of such a specification: a task definition, a problem-solving method, a domain model, an adapter, and assumptions that relate these elements. We present abstract data types and a variant of dynamic logic as formal means to specify these different elements. Based on our framework we can distinguish several verification tasks. In the paper, we discuss the application of the Karlsruhe Interactive Verifier (KIV) for this purpose. KIV was originally developed for the verification of procedural programs but it fits well for our approach. We illustrate the verification process with KIV and show how KIV can be used as an exploration tool that helps to detect assumptions necessary to close the gap between the task definition and the competence of a problem-solving method.
author: id67instance
author: id176instance
author: id177instance
author: id312instance
booktitle: Proceedings of the 10th Banff Knowledge Acquisition for Knowledge-Based Systems Workshop (KAW-96), Banff, Canada, Novemver 9-14, 1996
month: November
title: Specification and Verification of Knowledge-Based Systems
year: 1996

id612instance
type: InProceedings
type: Publication
abstract: A problem-solving method describes a reasoning process that efficiently achieves a goal by applying domain knowledge. However, a problem-solving method cannot directly be applied because of the existence of a gap between, on the one hand, a problem-solving method and the domain knowledge it uses, and, on the other hand, a problem-solving method and the goal that it is supposed to achieve. In this paper, we distinguish two types of assumptions based on an architecture of problem-solving methods, that are able to bridge the gap: one type of assumption is used to strengthen a problem-solving method, and the other to weaken the goal to be achieved. We also show how the effect of one assumption type can be substituted by the effect of the other type, and refer to this as "the law of conservation of assumptions".
author: id67instance
author: id174instance
author: id175instance
booktitle: Proceedings of the 12th European Conference on Artificial Intelligence (ECAI-96), Budapest, August 12-16, 1996
month: August
title: Assumptions of Problem-Solving Methods and their Role in Knowledge Engineering
year: 1996

id613instance
type: InProceedings
type: Publication
abstract: We investigate the formal specification of the dynamic reasoning process of knowledge-based systems. The main contributions of the paper are: defining a formal framework for describing the dynamic reasoning behaviour of knowledge-based systems which unifies existing approaches; defining a semantics for the specification of the dynamic reasoning behaviour of a knowledge-based system within the states as algebra setting that overcomes several shortcomings of the existing approaches; and providing for the first time an axiomatization and proof theory of specification languages for knowledge-based systems. We achieve this by developing the logical language MLPM (Modal Logic of Predicate Modification).
author: id67instance
author: id176instance
booktitle: Proceedings of the 12th European Conference on Artificial Intelligence (ECAI-96), Budapest, August 12-16, 1996
month: August
title: MLPM: Defing a Semantics and Axiomatization for Specifying the Reasoning Process of Knowledge-based Systems
year: 1996

id614instance
type: InProceedings
type: Publication
abstract: In this paper we present the following view on problem-solving methods for knowledge-based systems: Problem-solving methods describe an efficient reasoning strategy to achieve a goal by introducing assumptions about the available domain knowledge and the required functionality. Assumptions, dynamic reasoning behavior, and functionality are the three elements necessary to characterize a problem-solving method.
author: id67instance
author: id175instance
booktitle: Proceedings of the 9th European Knowledge Acquisition Workshop EKAW-96, Nottingham, England, May 14-17 1996
title: Problem-Solving Methods: Making Assumptions for Efficiency Reasons
year: 1996

id615instance
type: InProceedings
type: Publication
abstract: Uncertainty, incompleteness and vagueness are typical features of common-sense as well as expert knowledge. Reasoning based on such knowledge demands strategies to combine divergent information. All the more this is true in the context of integrating knowledge bases. This paper addresses knowledge representation, reasoning, and conflict management with many-valued logics. We show by some examples how information can be expressed in many-valued Horn clauses, how fitting truth value spaces can be found -in this context we also consider bilattices- and how conflict solving strategies can be involved. We do not focus on technical details but try to open up prospects of applications.
author: id22instance
booktitle: Proceedings of the 6th Conference of the Spanish Association for Artificial Intelligence, November 1995, Alicante
month: November
title: Knowledge Representation in Many-Valued Horn Clauses
year: 1995

id616instance
type: Book
type: Publication
abstract: The subject of the book is the Knowledge Acquisition and Representation Language KARL which is a formal and operational specification language for knowledge-based systems. It provides language primitives to represent knowledge according to the layers of a KADS-oriented model of expertise. The main features of KARL are: It provides epistemologically adequate modelling primitives allowing knowledge specifications at the so-called knowledge level. It is a formal knowledge specification language. That is, it has a declarative semantics. It is an operational knowledge specification language which allows prototyping. Chapter one introduces the basic idea of KARL. The main object of KARL is to fill or to narrow the gap between the implementation and the conceptual description of a knowledge-based system by defining a formal and operational specification language. It is related to the symbol level because it is a language with a formal and operational semantics. It is related to the knowledge level because it abstracts from all implementational details which are concerned with the realization by an efficient implementation. Chapter two, three, and four introduce the language KARL itself. KARL consists of the two languages L-KARL and P-KARL. Chapter two introduces the language L-KARL which is used to model static knowledge. P-KARL which is used to model procedural knowledge (i.e., knowledge about the control flow of a problem-solving method) is described in chapter three. Finally, chapter four shows how these languages and their interaction are used to model the domain layer, the inference layer, and the task layer of a model of expertise. Then, the mathematical semantics of KARL is defined in chapter five. A model-theoretic semantics is defined which allows a precise and unique specification of knowledge-based systems. Besides KARL, some other languages have been developed during the last few years which aim to formalize or operationalize KADS models of expertise. Besides a…
author: id67instance
isbn: 0-7923-9601-4
title: The Knowledge Acquisition And Representation Language KARL
year: 1995

id617instance
type: InProceedings
type: Publication
abstract: Knowledge Engineering (KE) and Software Engineering (SE) have similar goals: developing methods, techniques, and tools for the building process of either knowledge based systems (kbs) or (complex) traditional software. Due to this kinship it seems obvious to analyse to which extent both areas, KE and SE, can benefit from each other. In this paper we want to argue from the KE point of view. The main paradigm in KE has switched from a transfer point of view to a modeling point of view. So a lot of emphasis has been put on the development of notions and methods for building and structuring models, which capture different results of the development process. Much effort has been investigated into the analysis and development of reusable components: problem solving methods describing the dynamic behaviour of kbs and ontologies defining the vocabulary and structure of (domain) models. We describe specific approaches in KE in some detail which exploit these ideas in different ways: Role-Limiting Methods, KADS and MIKE. Finally Life Cycle Models, Non Functional Requirements and Transformational Development are discussed as areas where we think KE might profit from research and experiences made in SE.
author: id41instance
author: id57instance
booktitle: Proceedings of Softwaretechnik `95, Braunschweig, 10. -11. Oktober, GI-Fachausschuß 2.1 "Softwaretechnik und Programmiersprachen", Verbund SofTec NRW
title: Requirements Specification and Model-based Knowledge Engineering
year: 1995

id618instance
type: InProceedings
type: Publication
abstract: The paper presents an approach for machine learning in a restricted first-order language with finite minimal Herbrand models by means of a search through a propositional representation space. The learning target is to find a set of goal clauses which can be used to define a target predicate. That is, we deal with single-predicate learning. For the search process we use the learning algorithm JoJo/Frog which provides a flexible search strategy. The transition from the first-order representation to the representation in propositional logic is achieved by ground substitutions which transform clauses into ground clauses. Taking a closer look at this transition makes clear that the sufficiency condition which is used by algorithms like FOIL and LINUS as a criterion for judging the achieved learning results does not correspond to the completeness condition in the propositional case. Therefore, we use an extended completeness condition which captures all information given by the example knowledge. As a consequence we get a new definition of positive and negative examples. Instead of ground facts we regard ground substitutions as examples.
author: id35instance
author: id67instance
author: id332instance
booktitle: Proceedings of the 5th International Workshop on Inductive Logic Programming ILP-95, Leuven, September 4-6, 1995, Technical Report, Department of Computer Science, Katholieke Universiteit Leuven, Belgium
title: Are Substitutions the Better Examples? Learning Complete Set of Clauses with Frog
year: 1995

id619instance
type: Publication
type: TechnicalReport
abstract: The paper presents an approach for machine learning in a restricted first-order language with finite minimal Herbrand models by means of a search through a propositional representation space. The learning target is to find a set of goal clauses which can be used to define a target predicate. That is, we deal with single-predicate learning. For the search process we use the learning algorithm JoJo/Frog which provides a flexible search strategy. The transition from the first-order representation to the representation in propositional logic is achieved by ground substitutions which transform clauses into ground clauses. Taking a closer look at this transition makes clear that the sufficiency condition which is used by algorithms like FOIL and LINUS as a criterion for judging the achieved learning results does not correspond to the completeness condition in the propositional case. Therefore, we use an extended completeness condition which captures all information given by the example knowledge. As a consequence we get a new definition of positive and negative examples. Instead of ground facts we regard ground substitutions as examples.
author: id35instance
author: id67instance
author: id332instance
month: August
note: 321
title: Are Substitutions the Better Examples? Learning Complete Sets of Clauses with Frog
year: 1995

id61instance
type: Article
type: Publication
abstract: Der Beitrag beschreibt die Einsatzmöglichkeiten von XML in der multimedialen Lehre.Es werden XML-basierte Beschreibungssprachen für verschiedene Aspekte eines Lehr-und Lernsystems vorgestellt,Werkzeuge zur Verarbeitung von XML-Dokumenten genannt und die XML-Unterstützung webbasierter Lehr-und Lernplattformen evaluiert.
author: id29instance
author: id65instance
author: id42instance
has project: id7instance
is about: id20instance
journal: It+ti. Informationstechnik und Technische Informatik
month: April
pages: 211-216
title: XML: Nur ein neues Schlagwort? Zum Nutzen von XML in Lehr- und Lernsystemen
year: 2002

id620instance
type: InProceedings
type: Publication
abstract: When applying Inductive Logic Programming techniques in real-world settings, many problems will come up. Since not many real-world applications are reported using ILP-techniques this report describes some problems that may appear when starting such a project. The project was done in co-operation with Högdalenverket, a heat and power plant burning household refuse in the Stockholm area, Sweden. The application problems with collecting data and the application of ILP-techniques are discussed. Results of tests performed while using SPECTRE, an ILP-algorithm developed at Stockholm University, are reported. These results show that the addition of background knowledge and addition/retraction of parameters has positive effect on the performance of the ILP-techniques. After initial tests a knowledge acquisition stage was started. This resulted in knowledge about the domain that was used for evaluating the results of learning using SPECTRE. This prevented several mistakes by interpreting data and evaluating performance. This knowledge was partly used as background knowledge for the learning algorithm. Noise handling was applied and increased the efficiency of the SPECTRE-algorithm. The paper lists the results of tests performed on data from the refuse-burning plant. It also compares the performance of the SPECTRE-algorithm on theoretical databases with the performance on this practical domain. It also gives some insight in the change of performance that can be expected when transferring from the laboratory-domains to domains gathered in the real-world.
author: id68instance
booktitle: Proceedings of the Fifth Scandinavian Conference on Artificial Intelligence SCAI '95 (Trondheim, Norway, May 29-31), 1995
title: Högdalenverket: Applying ILP in an Industrial Setting
year: 1995

id621instance
type: InProceedings
type: Publication
abstract: When applying Inductive Logic Programming techniques in real-world settings, many problems will come up. Since not many real-world applications are reported using ILP-techniques this report describes some problems that may appear when starting such a project. The project was done in co-operation with Högdalenverket, a heat and power plant burning household refuse in the Stockholm area, Sweden. The application problems with collecting data and the application of ILP-techniques are discussed. Results of tests performed while using SPECTRE, an ILP-algorithm developed at Stockholm University, are reported. These results show that the addition of background knowledge and addition/retraction of parameters has positive effect on the performance of the ILP-techniques. After initial tests a knowledge acquisition stage was started. This resulted in knowledge about the domain that was used for evaluating the results of learning using SPECTRE. This prevented several mistakes by interpreting data and evaluating performance. This knowledge was partly used as background knowledge for the learning algorithm. Noise handling was applied and increased the efficiency of the SPECTRE-algorithm. The paper lists the results of tests performed on data from the refuse-burning plant. It also compares the performance of the SPECTRE-algorithm on theoretical databases with the performance on this practical domain. It also gives some insight in the change of performance that can be expected when transferring from the laboratory-domains to domains gathered in the real-world.
author: id68instance
booktitle: Proceedings of Intelligent Adaptive Systems Workshop IAS-95, Melbourne-beach, Florida
title: Högdalenverket: Applying ILP in an Industrial Setting
year: 1995

id622instance
type: InProceedings
type: Publication
author: id26instance
author: id57instance
author: id370instance
author: id371instance
author: id372instance
author: id373instance
booktitle: Proceedings of the 9th International Symposium on Computer Science for Environment Protection (Berlin, September 27-29)
title: Der MIKE-Ansatz zur Modellierung von Expertenwissen im Umweltbereich - dargestellt am Beispiel des Bauschuttrecyclings
year: 1995

id623instance
type: InProceedings
type: Publication
abstract: Non-functional requirements significantly affect and determine the quality of software systems. In this paper it is shown how non-functional requirements are modelled in MIKE, an approach to the development of knowledge-based systems. A semi-formal hypermedia-based model is used to describe the results of the elicitation and interpretation of non-functional requirements and their relationships. Non-functional requirements are the driving force behind the decisions taken in the design phase of MIKE. The impact of non-functional requirements on design decisions and interdependencies between design decisions are explicitly recorded in an additional model in MIKE, thus resulting in a rich documentation of the rationale of design decisions and also providing an important contribution to the traceability of these requirements.
author: id26instance
author: id57instance
booktitle: Proceedings of the 5th European Software Engineering Conference ESEC'95 (Sitges, Spain, September 25 - 28, 1995)
series: Lecture Notes in Computer Science
title: The Treatment of Non-Functional Requirements in MIKE
volume: 989
year: 1995

id624instance
type: Publication
type: TechnicalReport
abstract: Non-functional requirements significantly affect and determine the quality of software systems. In this paper it is shown how non-functional requirements are modelled in MIKE, an approach to the development of knowledge-based systems. A semi-formal hypermedia-based model is used to describe the results of the elicitation and interpretation of non-functional requirements and their relationships. Non-functional requirements are the driving force behind the decisions taken in the design phase of MIKE. The impact of non-functional requirements on design decisions and interdependencies between design decisions are explicitly recorded in an additional model in MIKE, thus resulting in a rich documentation of the rationale of design decisions and also providing an important contribution to the traceability of these requirements.
author: id26instance
author: id57instance
month: June
series: 319
title: The Treatment of Non-Functional Requirements in MIKE
year: 1995

id625instance
type: Misc
type: Publication
author: id26instance
howpublished: Dissertation, Institut für Angewandte Informatik und Formale Beschreibungsverfahren, Universität Karlsruhe, DISKI 84, infix-Verlag
title: Die Entwurfsphase in MIKE. Methode und Beschreibungssprache
year: 1995

id626instance
type: Publication
type: TechnicalReport
abstract: The Knowledge Acquisition and Representation Language (KARL) combines a description of a knowledge-based system at the conceptual level (a so-called model of expertise) with a description at a formal and executable level. Thus, KARL allows the precise and unique specification of the functionality of a knowledge-based system independent of any implementational details. A KARL model of expertise contains the description of domain knowledge, inference knowledge, and procedural control knowledge. That is, it includes the specification of static and procedural knowledge. For capturing these different types of knowledge KARL offers corresponding modeling primitives which are based on Frame-logic and Dynamic Logic. A declarative semantics for a complete KARL model of expertise is given by a novel combination of these two types of logic. In addition, an operational definition of this semantics, which relies on a fixpoint approach, is given. This operational semantics defines the basis for the implementation of the KARL interpreter which includes appropriate algorithms for efficiently evaluating KARL specifications. This enables the evaluation of KARL specifications by means of testing.
author: id41instance
author: id57instance
author: id67instance
month: May
series: 316
title: The Knowledge Acquisition and Representation Language KARL
year: 1995

id627instance
type: Misc
type: Publication
author: id58instance
howpublished: Dissertation, Institut für Angewandte Informatik und Formale Beschreibungsverfahren, Universität Karlsruhe, DISKI 85, infix-Verlag
title: Wiederverwendung von Commonsense Ontologien. Methoden und Werkzeuge
year: 1995

id628instance
type: Article
type: Publication
abstract: Im folgenden werden die wesentlichen Prinzipien und Methoden des MIKE-Ansatzes (Modellbasiertes Inkrementelles Knowledge Engineering) beschrieben. MIKE bietet eine Sammlung von Methoden zur Erhebung, Interpretation, Formalisierung und Implementierung von Wissen zur Erstellung eines wissensbasierten Systems. Ziel von MIKE ist es, die Vorteile von Lebenszyklusmodellen, Prototyping und formalen Spezifikationssprachen in einem übergreifenden Ansatz für das Knowledge Engineering zu integrieren.
author: id26instance
author: id41instance
author: id67instance
author: id374instance
journal: Künstliche Intelligenz
number: 1/1995
pages: 16-21
title: Modellbasiertes Inkrementelles Knowledge Engineering: der MIKE-Ansatz
year: 1995

id629instance
type: InProceedings
type: Publication
abstract: The paper attempts a step in the direction of competence theories of reusable problem-solving methods (psm's). In fact, we examine a variant of the psm propose-and-revise. The variant was developed as a solution to the current Sisyphus task (VT-task). We decompose the entire method into its individual subtasks and examine each subtask for its underlying assumptions concerning the available domain knowledge. By doing this, we determine assumptions and limitations of the entire method. In addition, we examine how different control flows between these subtasks can influence the efficiency and effectiveness of the method. Again, we show how these differences are related to the assumptions of the method. Making these assumptions explicit defines interesting goals for validation and verification efforts. First, we show that under some circumstances two psm's behave equally well or that one is more suitable than another. Second, we have to prove for a given domain knowledge whether it fulfils the assumptions of a selected problem-solving method. We believe that such studies are necessary to allow the reuse of psm's and, conversely, that the reuse of psm's justifies the effort of such activities.
author: id67instance
booktitle: Proceedings of the 9th Knowledge Acquisition for Knowledge-Based Systems Workshop KAW'95 (Banff, Canada, February 26 - March 3)
title: Assumptions and Limitations of a Problem-Solving Method: A Case Study
year: 1995

id62instance
type: InProceedings
type: Publication
author: id15instance
author: id44instance
booktitle: AIPS Workshop on On-line Planning and Scheduling
is about: id31instance
pages: 3-10
title: Anticipatory scheduling for dynamic job shop problems
year: 2002

id630instance
type: Publication
type: TechnicalReport
abstract: The paper attempts a step in the direction of competence theories of reusable problem-solving methods (psm's). In fact, we examine a variant of the psm propose-and-revise. The variant was developed as a solution to the current Sisyphus task (VT-task). We decompose the entire method into its individual subtasks and examine each subtask for its underlying assumptions concerning the available domain knowledge. By doing this, we determine assumptions and limitations of the entire method. In addition, we examine how different control flows between these subtasks can influence the efficiency and effectiveness of the method. Again, we show how these differences are related to the assumptions of the method. Making these assumptions explicit defines interesting goals for validation and verification efforts. First, we show that under some circumstances two psm's behave equally well or that one is more suitable than another. Second, we have to prove for a given domain knowledge whether it fulfils the assumptions of a selected problem-solving method. We believe that such studies are necessary to allow the reuse of psm's and, conversely, that the reuse of psm's justifies the effort of such activities
author: id67instance
month: February
series: 312
title: Assumptions and Limitations of a Problem-Solving Method: A Case Study
year: 1995

id631instance
type: Article
type: Publication
abstract: Domain models can be constructed more easily and made more robust by reusing ontologies in a well-defined way. In this paper the KARO approach is introduced which provides various means of retrieving and adapting components of an ontology as part of a domain model construction process. KARO is based on the knowledge-processing component LILOG-KB provided by the LILOG text-understanding system. Above all, the notion of classification is applied for the retrieval of relevant categories. The upper structure of LILOG-KB serves as an exemplary ontology. By integrating KARO into the Model-based and Incremental Knowledge Engineering Environment (MIKE) the reuse of a predefined ontology can be integrated into the development process of expert systems in a systematic way.
author: id57instance
author: id58instance
journal: International Journal on Human-Computer Studies
number: 43
pages: 945 - 965
title: An environment for reusing ontologies within a knowledge engineering approach
year: 1995

id632instance
type: Article
type: Publication
abstract: During the last years, a number of formal specification languages for knowledge-based systems (kbs) have been developed. Characteristic of such systems are a complex knowledge base and an inference engine which uses this knowledge to solve a given problem. Languages for kbs have to cover both these aspects. They have to provide a means to specify a complex and large amount of knowledge and they have to provide means to specify the dynamic reasoning behavior of a kbs. Nethertheless, kbs are just a specific type of software systems. Therefore it seems quite natural to compare formal languages for specifying kbs with formal languages which were developed by the software engineering community for specifying software systems. That is the subject of this paper.
author: id67instance
journal: The Knowledge Engineering Review
number: 4
title: Formal Specification Languages in Knowledge and Software Engineering
volume: 10
year: 1995

id633instance
type: Article
type: Publication
abstract: This paper presents a general discussion of the role of formal methods in Knowledge Engineering. We give an historical account of the development of the field of Knowledge Engineering towards the use of formal methods. Subsequently, we discuss the pro's and cons of formal methods. We do this by summarising the proclaimed advantages, and by arguing against some of the commonly heard objections against formal methods. We briefly summarise the current state of the art and discuss the most important directions that future research in this field should take. This paper presents a general setting for the other contributions in this issue of the Journal, which each deal with a specific issue in more detail.
author: id67instance
author: id7instance
journal: The Knowledge Engineering Review
number: 4
title: Formal Methods in Knowledge Engineering
volume: 10
year: 1995

id634instance
type: InProceedings
type: Publication
abstract: This paper shows how KARO (Knowledge Acquisiton Environment with Reusable Ontologies) supports the development of the domain layer in MIKE (Model-based and Incremental Knowledge Engineering). KARO supplements the reuse of generic problem-solving methods at the task and inference layers in MIKE with a commonsense ontology at the domain layer. The intention is to make the development process easier and the final domain layer more robust. In order to reuse ontologies powerful and integrated tools and methods are absolutely necessary. Therefore, we will describe the formal, linguistic and graphical methods, the architecture and other properties of KARO. We will enrich this survey with several examples which clarify the modeling process of the domain layer in a scheduling task using MIKE. We will show the integration of KARO and MIKE in respect of the development of the domain layer of a model of expertise. We finish the paper with a comparison of related approaches.
author: id57instance
author: id58instance
booktitle: Proceedings of the European Knowledge Acquisition Workshop (EKAW-94), Hoegaarden, Belgium, September 26-29, 1994
pages: 200-225
series: Lecture Notes in Artificial Intelligence (LNAI)
title: KARO: An Integrated Environment for Reusing Ontologies
volume: 867
year: 1994

id635instance
type: InProceedings
type: Publication
abstract: This paper discusses and compares two different approaches to model-based knowledge acquisition. That is, we regard the Model-based and Incremental Knowledge Engineering (MIKE) approach and the Configurable Role-limiting Method approach (CRLM). MIKE is based on the distinction of different phases in the software development process. It uses the formal and operational knowledge specification language KARL allowing a precise and unique description of a model of expertise which is the outcome of the analysis phase. CRLM is based on the role-limiting method approach. Role limiting shells are implementations of strong problem-solving methods and substantially simplify knowledge acquisition through guidance by predefined models of problem-solving and by sophisticated graphical user interfaces. The main disadvantages, namely inflexibility and brittleness, are to some degree overcome by the CRLM where the problem-solving methods are split into smaller parts, which can then be reconfigured allowing the integration of new methods or other method combinations. Although these two approaches are often discussed as contradictory, we, however, experienced that both approaches complete each other very well. As an outcome of our comparison, we outline topics of future research for both approaches.
author: id67instance
author: id375instance
booktitle: Proceedings of the European Knowledge Acquisition Workshop (EKAW-94), Hoegaarden, Belgium, September 26-29, 1994
series: Lecture Notes in Artificial Intelligence (LNAI)
title: A Comparision Of Two Approaches To Model-Based Knowledge Acquisition
volume: 867
year: 1994

id636instance
type: InProceedings
type: Publication
abstract: Learning from examples is a field of research in machine learning where class descriptions, like decision trees or implications (production rules or horn clauses) are produced using positive and negative examples as information. To solve this task many different heuristic search strategies have been developed, so far. The search by specialization is the most widely used search strategy, whereas other approaches use a search by generalization only. JoJo is an algorithm that combines both search directions into one search procedure. According to the estimated quality of the currently regarded rule either a generalization or specialization step is carried out by deleting or adding one premise to the conjunction part of the rule. But, to create an even more flexible (and faster) algorithm, it should be possible to delete or add more than just one premise at a time. Relaxing this restriction of JoJo led to the new highly flexible algorithm Frog that additionally uses a third search direction.
author: id35instance
author: id67instance
booktitle: Beiträge zum 7. Fachgruppentreffen Maschinelles Lernen, Kaiserslautern, August, 1994, Forschungsbericht LSA-95-01, Zentrum für Lernende Systeme und Anwendungen, Fachbereich Informatik, Universität Kaiserslautern
pages: 37-44
title: From JoJo to Frog: Extending a bi-directional Search Strategy to a more flexible three-directional Search
year: 1994

id637instance
type: InProceedings
type: Publication
abstract: We present a framework to represent distributed knowledge based on many-valued logics, combined with bilattices. The use of these truth-value spaces enables us to express fuzzy, incomplete and even inconsistent knowledge. At a supervisory level of such a systeman, decision-theoretic result should be applied to match divergent statements or preferences. We describe some strategies that are useful for this purpose.
author: id22instance
booktitle: Integrating Knowledge Bases: Towards Symbolic Representation and Conflict Managing
title: Integrating Knowledge Bases: Towards Symbolic Representation and Conflict Managing
year: 1994

id638instance
type: InProceedings
type: Publication
abstract: The paper describes a development approach for knowledge-based systems (KBS) combining semiformal and formal techniques for specification and design. For the semiformal representation we use a hypermedia-based formalism which serves as a communication basis between expert and knowledge engineer during knowledge acquisition. The semiformal knowledge representation is the basis for formalization, resulting in a formal and executable model of expertise specified in the Knowledge Acquisition and Representation Language (KARL). In the design phase, this representation is enriched by additional language primitives which focus on issues of realization and which facilitate the mapping of the model of expertise to the implementation environment. A smooth transition from semiformal to formal specification and further on to design is achieved as all the description techniques rely on the same conceptual model to describe the system. Thus, the system is thoroughly documented at different description levels, each of which focuses on a distinct aspect of the entire development effort. Traceability of requirements is supported by linking the different formalisms to each other.
author: id26instance
author: id57instance
author: id67instance
author: id374instance
booktitle: Proceedings of the 3rd Japanese Knowledge Acquisition Workshop JKAW'94 (Hatoyama, Japan, Nov. 7-9)
pages: 73-87
title: Integrating Semiformal and Formal Methods in Knowledge-Based Systems Development
year: 1994

id639instance
type: InProceedings
type: Publication
author: id26instance
booktitle: KI-94 Workshops - Extended Abstracts
pages: 341-343
title: Strukturierung wissensbasierter Systeme in MIKE
year: 1994

id63instance
type: InProceedings
type: Publication
author: id15instance
author: id2039instance
author: id29instance
author: id37instance
booktitle: Ant Algorithms
is about: id5instance
pages: 298-299
series: LNCS
title: Coevolutionary ant algorithms playing games
volume: 2463
year: 2002

id640instance
type: Publication
type: TechnicalReport
abstract: The Knowledge Acquisition and Representation Language (KARL) combines a description of a knowledge-based system (kbs) at the conceptual level (a so-called model of expertise) with a description at a formal and executable level. It is a specification language which allows the precise and unique description of a kbs independently from implementation details. In the paper, KARL is mainly discussed as a formal language. That is, the paper introduces a formal semantics for KARL. Because KARL allows the representation of static and dynamic (i.e., procedural) knowledge, its semantics must integrate both types of knowledge. First, an object-oriented logic L-KARL was developed which can be used to specify static knowledge. Second, dynamic logic was used to develop P-KARL for specifying knowledge about dynamics. Third, both languages had to be combined to represent a complete model of expertise. As a result, the integrated description of static and dynamic knowledge based on a well-defined declarative framework becomes possible.
author: id41instance
author: id57instance
author: id67instance
month: August
series: 307
title: The Specification Language KARL and Its Declarative Semantics
year: 1994

id641instance
type: Misc
type: Publication
author: id374instance
howpublished: Dissertation, Institut für Angewandte Informatik und Formale Beschreibungsverfahren, Universität Karlsruhe, DISKI 60, infix-Verlag
title: Modellkonstruktion in MIKE. Methoden und Werkzeuge
year: 1994

id642instance
type: InProceedings
type: Publication
abstract: In order to reduce the complexity of large knowledge-based systems and promote reusability, means for decomposing them to smaller chunks are required. MIKE, our knowledge engineering framework, provides three basic means for structuring which are described in this paper: different kinds of knowledge are separated at different knowledge layers, knowledge layers can be structured by modules, and knowledge within modules is expressed in terms of an object-centred data model. In addition, ideas from entity relationship model clustering are adapted and extended to facilitate the understandability of domain knowledge and support the formation of modules.
author: id26instance
author: id57instance
booktitle: Database and Expert Systems Applications
pages: 488-497
series: Lecture Notes in Computer Science
title: Mechanisms for Structuring Knowledge-Based Systems
volume: 856
year: 1994

id643instance
type: Publication
type: TechnicalReport
abstract: In order to reduce the complexity of large knowledge-based systems and promote reusability, means for decomposing them to smaller chunks are required. MIKE, our knowledge engineering framework, provides three basic means for structuring which are described in this paper: different kinds of knowledge are separated at different knowledge layers, knowledge layers can be structured by modules, and knowledge within modules is expressed in terms of an object-centred data model. In addition, ideas from entity relationship model clustering are adapted and extended to facilitate the understandability of domain knowledge and support the formation of modules.
author: id26instance
author: id57instance
month: June
series: 301
title: Mechanisms for Structuring Knowledge-Based Systems
year: 1994

id644instance
type: InCollection
type: Publication
abstract: The issue how to achieve a principled transition from knowledge acquisition to implementation such that a knowledge-based system (kbs) of high quality results is rarely discussed in the knowledge engineering literature. Here, this topic is addressed in the context of the design phase of the MIKE approach to kbs development. In MIKE, design decisions are motivated primarily by non-functional requirements. Due to the iterative nature of the design process, design decisions have to be evaluated early. In MIKE, this can be achieved by experimental prototyping, but also by quantitative measures associated to requirements. Furthermore, in order to improve transparency and traceability, the description of the design includes a record of the design decisions and their motivation in addition to a description of the artefact. DesignKARL is sketched as the formalism for expressing these aspects.
author: id26instance
booktitle: Software Quality Management II - Vol. 2: Building Quality into Software
pages: 707-722
title: An Approach to the Design of Knowledge-Based Systems
year: 1994

id645instance
type: InProceedings
type: Publication
abstract: Model-based approaches to the development of knowledge-based systems require appropriate description formalisms for representing intermediate results of the development. In the MIKE approach, several such formalisms have been developed spanning the range from the informal specification of requirements to a representation focusing on the realization of the system. In this paper, one of these formalisms, DesignKARL, is presented in some detail. DesignKARL is intended to support the transition from knowledge acquisition to implementation, i.e. the design phase. Besides language primitives for describing the design product, DesignKARL also includes primitives for documenting design decisions and the underlying rationale.
author: id26instance
booktitle: Proceedings of the 6th International Conference on Software Engineering and Knowledge Engineering SEKE'94 (Jurmala, Latvia, June 20-23)
month: June
pages: 78-85
title: DesignKARL - A Language for the Design of Knowledge-Based Systems
year: 1994

id646instance
type: Publication
type: TechnicalReport
abstract: Model-based approaches to the development of knowledge-based systems require appropriate description formalisms for representing intermediate results of the development. In the MIKE approach, several such formalisms have been developed spanning the range from the informal specification of requirements to a representation focusing on the realization of the system. In this paper, one of these formalisms, DesignKARL, is presented in some detail. DesignKARL is intended to support the transition from knowledge acquisition to implementation, i.e. the design phase. Besides language primitives for describing the design product, DesignKARL also includes primitives for documenting design decisions and the underlying rationale.
author: id26instance
month: April
series: 296
title: DesignKARL - A Language for the Design of Knowledge-Based Systems
year: 1994

id647instance
type: InProceedings
type: Publication
abstract: We argue that non-functional requirements are the driving force behind the design decisions in the MIKE approach to the development of knowledge-based systems. We outline the model adopted in MIKE to record the rationale of design decisions by explicitly linking them to non-functional requirements and indicate how the evaluation of the design wrt. the posed requirements can be integrated into the development process.
author: id26instance
booktitle: Proceedings of the 1st International Workshop on Requirements Engineering: Foundation of Software Quality REFSQ'94 (Utrecht, Netherlands, June 6-7)
pages: 64-70
series: Aachener Beiträge zur Informatik
title: Addressing Non-Functional Requirements in the Development of Knowledge-Based Systems
volume: 6
year: 1994

id648instance
type: InProceedings
type: Publication
abstract: This paper presents an approach to support the top-down development of knowledge based systems. We propose to use predefined knowledge elements for eliciting, structuring, and formalizing the knowledge. The predefined elements are arranged in a library. We differentiate between three types of reusable knowledge elements: generic problem solving methods (PSMs), generic concept taxonomies and template forms from which rule templates are generated in accordance to the concrete application. The generic PSMs as well as the generic concept taxonomies of our library is described informally and formally so that they can be used at the one hand as guidelines for elicitation and on the other hand as basis for the formalization which has to be modified according to the application. For integrating the principle of reuse we propose different tools that support the usage of the predefined methods, concepts and template forms from the library. The paper gives an overview of our library components as well as of our reuse principles. Moreover, the tools supporting the top-down knowledge acquisition are introduced.
author: id58instance
author: id374instance
author: id377instance
booktitle: Proceedings of the International Conference on Expert Systems for Development, Bangkok, Thailand, March 28-31, 1994
title: Top-Down Knowledge Acquisition
year: 1994

id649instance
type: InProceedings
type: Publication
abstract: The paper discusses an approach which allows the specification of a knowledge-based system (kbs) at several levels. The Knowledge Acquisition and Representation Language KARL combines a description of a kbs at the conceptual level supported by graphical modelling primitives with a description at a formal and executable level. Therefore, a KARL-specification can be used as a means for communication between expert and knowledge engineer as well as an intermediate representation, closing the conceptual gap between an informal specification and an implementation of a kbs. In the paper, KARL is mainly discussed as a graphical modelling language.
author: id67instance
booktitle: Proceedings of the International Conference on Expert Systems for Development, Bangkok, Thailand, March 28-31, 1994
month: March
title: Graphical and Formal Knowledge Specification with KARL
year: 1994

id64instance
type: InProceedings
type: Publication
abstract: Das in dieser Arbeit beschriebene Blended-Learning-Szenario basiert auf einer Erweiterung der Präsenzlehre um E-Learning-Komponenten. Die Vorlesungen werden um multimediale Lehrmaterialien und digitale Aufzeichnungen erweitert. Teleseminare und Telepraktika bestehen aus virtueller Projektarbeit und Videokonferenz-Präsentationen.
author: id21instance
author: id23instance
author: id38instance
booktitle: Tagungsband der GI-Jahrestagung 2002. Dortmund, 1. - 3. Oktober 2002
has project: id19instance
has project: id8instance
is about: id20instance
pages: 270-274
series: GI-Edition – Lecture Notes in Informatics (LNI)
title: Blended Learning in der Hochschule
volume: P-19
year: 2002

id650instance
type: Publication
type: TechnicalReport
abstract: The paper discusses an approach which allows the specification of a knowledge-based system (kbs) at several levels. The Knowledge Acquisition and Representation Language KARL combines a description of a kbs at the conceptual level supported by graphical modelling primitives with a description at a formal and executable level. Therefore, a KARL-specification can be used as a means for communication between expert and knowledge engineer as well as an intermediate representation, closing the conceptual gap between an informal specification and an implementation of a kbs. In the paper, KARL is mainly discussed as a graphical modelling language.
author: id67instance
series: 284
title: Graphical and Formal Knowledge Specification with KARL
year: 1994

id651instance
type: InProceedings
type: Publication
abstract: Model-based approaches to the development of knowledge-based systems require appropriate description formalisms for representing intermediate results of the development. In the MIKE approach, several such formalisms have been developed which span the range from the informal specification of requirements to an implementation-biased representation. In this paper, one of these formalisms, DesignKARL, is presented in some detail. DesignKARL is intended to support the transition from knowledge acquisition to implementation, i.e. the design phase. Besides language primitives for describing the design product, DesignKARL includes additional primitives for the documentation of design decisions and their underlying rationale.
author: id26instance
booktitle: Proceedings of the 4th KADS Meeting (St. Augustin, Germany, March 24-25)
number: 832
series: Arbeitspapiere der GMD
title: Language Support for Knowledge-Based Systems Design
year: 1994

id652instance
type: InProceedings
type: Publication
abstract: In this paper, we describe a solution to the Sisyphus elevator configuration problem by combining the formal and operational specification language KARL and the configurable role-limiting shell approach. The knowledge is described in a graphical and semiformal manner which is influenced by the KADS models of expertise. A formal description is gained by supplementing the semiformal description with formal specifications which add a new level of precision and uniqueness. A role limiting shell for propose-and-revise systems was designed and implemented as realization of the final system. This shell has been derived by adapting another shell which is based on a similar problem-solving method, namely the propose-and-exchange method.
author: id26instance
author: id41instance
author: id67instance
author: id376instance
booktitle: Proceedings of the 8th Knowledge Acquisition for Knowledge-Based Systems Workshop KAW'94 (Banff, Canada, January 30 - February 4)
title: Combining KARL and Configurable Role Limiting Methods for Configuring Elevator Systems
year: 1994

id653instance
type: Publication
type: TechnicalReport
abstract: In this paper, we describe a solution to the Sisyphus elevator configuration problem by combining the formal and operational specification language KARL and the configurable role-limiting shell approach. The knowledge is described in a graphical and semiformal manner which is influenced by the KADS models of expertise. A formal description is gained by supplementing the semiformal description with formal specifications which add a new level of precision and uniqueness. A role limiting shell for propose-and-revise systems was designed and implemented as realization of the final system. This shell has been derived by adapting another shell which is based on a similar problem-solving method, namely the propose-and-exchange method.
author: id26instance
author: id41instance
author: id67instance
author: id375instance
month: February
series: 292
title: Combining KARL and Configurable Role Limiting Methods for Configuring Elevator Systems
year: 1994

id654instance
type: InCollection
type: Publication
abstract: Das Ziel des Teilprojektes war es, eine automatische Verteilung von Software für unterschiedlichste Hard- und Softwareplattformen zur Verfügung zu stellen. Dazu sollte ein Verleihsystem für mobile Geräte entwickelt werden, das es unter anderem ermöglicht, persönliche Daten bei Rückgabe des Gerätes zu sichern und automatisch auf neue Leihgeräte zu übertragen. Da bei Leihgeräten die Benutzer relativ häufig wechseln, musste ein Konzept entwickelt werden, das es erlaubt, abhängig vom aktuellen Benutzer Software zur Nachinstallation anbieten zu können.
address: Universitätsverlag Karlsruhe
author: id29instance
author: id46instance
author: id89instance
author: id96instance
booktitle: NUKATH - Die Notebook-Universität Karlsruhe (TH)
has project: id29instance
is about: id20instance
is about: id92instance
month: July
pages: 92-105
title: Verleihsystem und 'Softwaretankstelle"
year: 2004

id655instance
type: InCollection
type: Publication
abstract: Das Teilprojekt "Campus Mobile Communication Center" zielt auf eine integrierte Application-Server-Umgebung ab, die es ermöglicht, mobile Lehr- und Lernanwendungen sowohl im 'herkömmlichen' Internet als auch für mobile Endgeräte anzubieten. Eine Zugriffsmöglichkeit innerhalb der nahtlosen Infrastruktur des Campus wurde modellhaft realisiert.
address: Universitätsverlag Karlsruhe
author: id96instance
author: id378instance
author: id379instance
author: id380instance
booktitle: NUKATH - Die Notebook-Universität Karlsruhe (TH)
has project: id29instance
is about: id100instance
is about: id108instance
is about: id90instance
is about: id99instance
month: July
pages: 142-149
title: Campus Mobile Communication Center
year: 2004

id656instance
type: InProceedings
type: Publication
abstract: In this paper we present an approach for efficient navigation through an on-line product catalog. The goals of the approach are (i) to support a user in a step-by-step searching for a product and (ii) to ensure the product he has found is the best solution for his need. The product database is based on a light-weighted ontology and structured in the form of a lattice that enables hierarchical clustering of users’ requests. It means that a user can navigate from a very general product-attribute cluster, which satisfies user’s buying need and contains a lot of products, to the very specific clusters that seem to contain a few, but for the user highly relevant, products. In each navigation step, the user is provided with the minimal set of navigation alternatives. In order to enhance the processing of the lattice, the partial ordering of the products-attributes clusters is computed using methods from formal concept analysis.
author: id32instance
booktitle: IEEE EEE 2004
has project: id32instance
is about: id24instance
is about: id68instance
month: March
pages: 242-255
title: On Using Query Neighbourhood for Better Navigation Through a Product Catalog: SMART Approach
year: 2004

id657instance
type: InProceedings
type: Publication
abstract: In this paper we present an approach that models the behaviour of an on-line shop assistant on the knowledge level, i.e. it takes into account not only which actions (questions) a shop assistant will perform, but also which goals he wants to achieve by taking an action. As a generic reasoning pattern of such an e-shop agent we use the cover-and-differentiate problem-solving method, a method very successfully applied in various diagnosis and classification tasks. In that way, we can (i) model the question-answering process such that the minimal set of useful questions will be provided to a user, (ii) easily reinterpret and fine-tune shopping strategies that exist in other e-shop portals and (iii) design and integrate new methods into generic reasoning pattern. We present an evaluation study which illustrates these benefits.
author: id32instance
booktitle: Software Engineering Knowledge Engineering, SEKE '04
has project: id32instance
is about: id24instance
is about: id69instance
is about: id79instance
month: July
pages: 244-265
title: On Modelling an e-shop Application on the Knowledge Level
year: 2004

id658instance
type: InProceedings
type: Publication
abstract: Although several approaches have been proposed for modelling an on-line shop assistant, recent customer’s analyses show that they miss some assistance in the buying process. The common problem is that the behaviour of an on-line shop assistant is modelled on the procedural level, i.e. like a workflow. In this paper we present an approach that models this behaviour on the knowledge level, i.e. it takes into account not only which actions (questions) a shop assistant will perform, but also which goals he wants to achieve by taking an action. As a generic reasoning pattern of such an e-shop agent we use the cover-and-differentiate problem-solving method, a method very successfully applied in various diagnosis and classification tasks. In that way, we can (i) model the question-answering process such that the minimal set of useful questions will be provided to a user, (ii) easily reinterpret and fine-tune shopping strategies that exist in other e-shop portals and (iii) design and integrate new methods into generic reasoning pattern. We present an evaluation study which illustrates these benefits.
author: id32instance
author: id57instance
booktitle: EKAW 2004
has project: id32instance
is about: id24instance
is about: id70instance
is about: id79instance
month: October
pages: 110-125
title: On the Knowledge Level of an On-line Shop Assistant
year: 2004

id659instance
type: InProceedings
type: Publication
author: id32instance
author: id53instance
author: id57instance
booktitle: IEEE/ACM Web Intelligence WI 2004
has project: id32instance
has project: id37instance
has project: id43instance
has project: id49instance
is about: id68instance
is about: id79instance
month: September
pages: 120-137
title: An Approach for Step-By-Step Query Refinement in the Ontology-based Information Retrieval
year: 2004

id660instance
type: InProceedings
type: Publication
abstract: In this paper we present a novel approach for the refinement of relational queries that enables so-called step-by-step refinement of a users query. The approach is based on discovering causal relationships between queries regarding the inclusion relation between the answers of these queries. We define a formal model for these query-answering pairs and use methods from inductive logic programming for the efficient calculation of a (lattice) order between them. The approach is very suitable for modelling information retrieval tasks based on the database repositories, like searching product catalogues.
author: id32instance
booktitle: IEEE/ACM Web Intelligence WI 2004
has project: id32instance
has project: id43instance
has project: id49instance
is about: id79instance
month: September
pages: 250-263
title: A Logic-based Approach for Query Refinement
year: 2004

id661instance
type: Publication
type: TechnicalReport
author: id20instance
author: id80instance
is about: id79instance
month: April
title: Ontology Mapping - An Integrated Approach
year: 2004

id662instance
type: InProceedings
type: Publication
address: Valencia, Spain
author: id6instance
author: id80instance
booktitle: International Workshop on Semantic Intelligent Middleware for the Web and the Grid at ECAI 04
month: August
title: Efficiency of Ontology Mapping Approaches
year: 2004

id663instance
type: InProceedings
type: Publication
address: Ulm, Germany
author: id6instance
author: id80instance
booktitle: Informatik 2004 - Informatik verbindet, Beiträge der 34. Jahrestagung der Gesellschaft für Informatik e.V., Workshop Dynamische Informationsfusion
has project: id30instance
has project: id42instance
has project: id49instance
is about: id79instance
month: September
pages: 356-361
series: Series of the Gesellschaft für Informatik
title: Quick Ontology Mapping (QOM) - Extended Abstract
volume: 1
year: 2004

id664instance
type: InProceedings
type: Publication
abstract: Not only knowledge acquisition, but also the principled transition from knowledge acquisition to implementation is an important question in knowledge engineering. This paper focuses on this transition and characterises the design phase of the MIKE approach to model-based incremental development of knowledge-based systems. The role of non-functional requirements in the development process is discussed and it is argued that for reasons of transparency, the description of the design should not just contain the description of the artefact, but should additionally include a record of the design decisions and their motivation, i.e. their relationship to the requirements posed. DesignKARL is outlined as the formalism for describing the artefact as well as design decisions and their rationale in MIKE.
author: id26instance
author: id57instance
booktitle: Proceedings of the 8th Knowledge Acquisition for Knowledge-Based Systems Workshop KAW'94 (Banff, Canada, January 30 - February 4)
title: The Design Process in MIKE
year: 1994

id665instance
type: Publication
type: TechnicalReport
abstract: Not only knowledge acquisition, but also the principled transition from knowledge acquisition to implementation is an important question in knowledge engineering. This paper focuses on this transition and characterises the design phase of the MIKE approach to model-based incremental development of knowledge-based systems. The role of non-functional requirements in the development process is discussed and it is argued that for reasons of transparency, the description of the design should not just contain the description of the artefact, but should additionally include a record of the design decisions and their motivation, i.e. their relationship to the requirements posed. DesignKARL is outlined as the formalism for describing the artefact as well as design decisions and their rationale in MIKE.
author: id26instance
author: id57instance
month: December
series: 285
title: The Design Process in MIKE
year: 1994

id666instance
type: InProceedings
type: Publication
abstract: In the paper we present the modelling primitives of KARL. KARL is a formal and operational language to represent models of expertise of knowledge-based systems. Since KARL offers epistemologically adequate modelling primitives it allows to describe the model of expertise on a high level of abstraction. The formal semantics of KARL provides means to describe the expertise unambiguously and the operational semantics of KARL allows to directly execute models of expertise in order to provide feedback for the expert, the knowledge engineer and the user of the final knowledge-based system. KARL is based on object oriented logic and dynamic logic.
author: id41instance
author: id57instance
author: id67instance
booktitle: Proceedings of the 2nd World Congress on Expert Systems, Lisbon/Estoril, Portugal, January 10-14, 1994
month: January
title: The Model of Expertise in KARL
year: 1994

id667instance
type: Publication
type: TechnicalReport
abstract: In the paper we present the modelling primitives of KARL. KARL is a formal and operational language to represent models of expertise of knowledge-based systems. Since KARL offers epistemologically adequate modelling primitives it allows to describe the model of expertise on a high level of abstraction. The formal semantics of KARL provides means to describe the expertise unambiguously and the operational semantics of KARL allows to directly execute models of expertise in order to provide feedback for the expert, the knowledge engineer and the user of the final knowledge-based system. KARL is based on object oriented logic and dynamic logic.
author: id41instance
author: id57instance
author: id67instance
month: January
series: 272
title: The Model of Expertise in KARL
year: 1994

id668instance
type: Article
type: Publication
abstract: In den siebziger und frühen achtziger Jahren wurde im Software Engineering (SE) eine Debatte geführt, die nun mit Zeitverzögerung auch im Knowledge Engineering (KE) geführt wird. Es geht dabei um den Sinn und Unsinn formaler Spezifikationstechniken zur implementierungsunabhängigen Beschreibung von Softwaresystemen. Im KE-Bereich geht es dabei speziell um wissensbasierte Systeme bzw. Expertensysteme. Im folgenden soll zunächst kurz die Historie zusammengefasst werden, die zur Entwicklung formaler Spezifikationstechniken im KE geführt hat. Damit werden zugleich die Gründe genannt, die die Entwicklung und die Verwendung formaler Spezifikationssprachen rechtfertigen. Danach werden einige Einwände gegen formale Spezifikationstechniken diskutiert, die Situation mit der im SE verglichen und im Anschluß versucht, einen versöhnenden Standpunkt aufzuzeigen.
author: id67instance
journal: Künstliche Intelligenz (KI)
number: 4
title: Sinn und Unsinn formaler Spezifikationssprachen für wissensbasierte Systeme
year: 1994

id669instance
type: InProceedings
type: Publication
abstract: The Knowledge Acquisition and Representation Language (KARL) combines a description of a knowledge-based system (kbs) at the conceptual level (a so-called model of expertise) with a description at a formal and executable level. It is a specification language which allows the precise and unique description of a kbs independently from implementational details. In the paper, KARL is mainly discussed as a formal language. That is, the paper introduces a formal semantics for KARL. Because KARL allows the representation of static and dynamic (i.e., procedural) knowledge, its semantics must integrate both types of knowledge. First, an object-oriented logic L-KARL was developed which can be used to specify static knowledge. Second, dynamic logic was used to de velop P-KARL for specifying knowledge about dynamics. Third, both languages had to be combined to represent a complete model of expertise. As a result, the integrated description of static and dynamic knowledge based on a well-defined declarative framework becomes possible.
author: id41instance
author: id57instance
author: id67instance
booktitle: Proceedings of the IS-CORE94 Workshop, Amsterdam, September 27-30, 1994, research report, Free University of Amsterdam
month: September
title: The Specification Language KARL and Its Declarative Semantics
year: 1994

id66instance
type: InProceedings
type: Publication
abstract: Although some of the existing approaches for enhancing searching for information in an information portal account for some aspects of users’ behaviour in the portal, a more systematic treatment of this issue is needed, foremost the role of the content and the structure of a portal on the analysis of usage information. In this paper, we first present the analysis of the factors which the efficient searching depends on and based on it, we propose the conceptual architecture of the management component for an information portal. We assume that the information portal is built around a common taxonomy (in our case an ontology), which is an emerging trend in knowledge management applications we are particularly intereseted in. The management component ensures that searching for information will include all factors which determine the relevance of an information resource, enabling the top-ranking of the highly relevant information resources. The approach is mainly based on tracking users’ interactions with the portal. We have applied the approach in the information portal of our Institute and an evaluation study is presented.
author: id32instance
author: id53instance
author: id88instance
booktitle: First International Workshop on Mining for Enhanced Web Search (MEWS 2002) held in conjunction with 3rd International Conference on Web Information System Engineering WISE 2002, Singapore, 2002
has project: id32instance
is about: id102instance
pages: 246-255
title: On Enhancing Searching for Information in an Information Portal by Tracking Users’ Activities
year: 2002

id670instance
type: InProceedings
type: Publication
abstract: The paper describes a specification approach for knowledge-based systems (kbs) combining semiformal and formal specification techniques. The semiformal knowledge representation uses a hypermedia-based formalism which serves as a communication basis between expert and knowledge engineer. This representation is also the basis for the formalization process resulting in the formal and executable model of expertise written in KARL. A smooth transition from the semiformal to the formal specification is enabled as both description techniques use the same conceptual model to describe the system.
author: id67instance
author: id374instance
booktitle: Innovation bei Rechen- und Kommunikationssystemen
title: Integration Of Semiformal and Formal Methods For Specification of Knowledge-Based Systems
year: 1994

id671instance
type: Article
type: Publication
abstract: In the field of Knowledge Engineering, dissatisfaction with the rapid-prototyping approach has led to a number of more principled methodologies for the construction of knowledge-based systems. Instead of immediately implementing the gathered and interpreted knowledge in a given implementation formalism according to the rapid-prototyping approach, many such methodologies centre around the notion of a conceptual model: an abstract, implementation independent description of the relevant problem solving expertise. A conceptual model should describe the task which is solved by the system and the knowledge which is required by it. Although such conceptual models have often been formulated in an informal way, recent years have seen the advent of formal and operational languages to describe such conceptual models more precisely, and operationally as a means for model evaluation. In this paper, we study a number of such formal and operational languages for specifying conceptual models. In order to enable a meaningful comparison of such languages, we focus on languages which are all aimed at the same underlying conceptual model, namely that from the KADS method for building KBS. We describe eight formal languages for KADS models of expertise, and compare these languages with respect to their modelling primitives, their semantics, their implementations and their applications. Future research issues in the area of formal and operational specification languages for KBS are identified as the result of studying these languages. The paper also contains an extensive bibliography of research in this area.
author: id67instance
author: id7instance
journal: The Knowledge Engineering Review
month: June
number: 2
title: A Comparison Of Languages Which Operationalize And Formalize KADS Models of Expertise
volume: 8
year: 1994

id672instance
type: InProceedings
type: Publication
abstract: In the paper we discuss a new approach for learning classification rules from examples. We sketch out the algorithm JoJo and its extension to a four step procedure which can be used to incrementally refine a set of classification rules. Incorrect rules are refined, the entire rule set is completed, redundant rules are deleted and the rule set can be minimized. The first two steps are done by applying JoJo with searches through the lattice of rules by generalization and specialization.
author: id35instance
author: id67instance
booktitle: Proceedings of the 6th European Conference on Machine Learning ECML-93, Vienna, Austria, April, 1993
pages: 378-383
series: Lecture Notes in Artificial Intelligence
title: Refinement of Rule Sets with JoJo
volume: 667
year: 1993

id673instance
type: InProceedings
type: Publication
author: id67instance
booktitle: Proceedings of the Workshop Knowledge and Data Engineering, Atelier d'Ingenierie des Connaissances et des Donees, A.I.C.D., Strasbourg, France, January 25-27, 1993
title: JoJo: Integration Of Generalization And Specialization
year: 1993

id674instance
type: InProceedings
type: Publication
author: id67instance
author: id381instance
author: id382instance
booktitle: Proceedings of the 13th International Conference AI, Expert Systems, Natural Language (Avignon-93), Avignon, May 24-28, 1993
title: RJ: A System For Learning From Example
year: 1993

id675instance
type: Article
type: Publication
author: id67instance
journal: Künstliche Intelligenz
number: 3
title: Ein integriertes System zum maschinellen Lernen aus Beispielen (A integrated system for machine learning from example)
year: 1993

id676instance
type: InProceedings
type: Publication
author: id26instance
author: id41instance
author: id57instance
author: id67instance
booktitle: Requirements Engineering 93: Prototyping
title: Giving Structured Analysis Techniques A Formal And Operational Semantics With KARL
year: 1993

id677instance
type: InCollection
type: Publication
author: id26instance
author: id41instance
author: id67instance
booktitle: Formal Specification Of Complex Reasoning Systems
title: Formalizing And Operationalizing A Design Task With KARL
year: 1993

id678instance
type: InProceedings
type: Publication
author: id26instance
author: id41instance
author: id57instance
author: id67instance
author: id374instance
booktitle: Knowledge Oriented Software Design
series: IFIP Transactions
title: Model-Based And Incremental Knowledge Engineering: The MIKE Approach
volume: A-27
year: 1993

id679instance
type: InProceedings
type: Publication
author: id67instance
author: id383instance
author: id384instance
booktitle: Proceedings of the IJCAI-93 Workshop Machine Learning and Knowledge Acquisition: Common Issues, Contrasting Methods, And Integrated Approaches, W16, Chambery, France, August 29, 1993
title: Applying A Machine Learning Algorithm In A Knowledge Acquisition Scenario
year: 1993

id680instance
type: InProceedings
type: Publication
author: id57instance
author: id67instance
author: id11instance
author: id367instance
booktitle: Complement Proceedings of the European Knowledge Acquisition Workshop (EKAW-93), Toulouse, France, September 6-10, 1993
title: Description And Formalization Of Problem-Solving Methods For Reusability: A Case Study
year: 1993

id681instance
type: InProceedings
type: Publication
author: id67instance
author: id385instance
booktitle: Grundlagen und Anwendungen der Künstlichen Intelligenz, Berlin, September 13-16, 1993
pages: 186-192
title: Maschinelles Lernen: Theoretische Ansätze und Anwendungen (Machine Learning: Theoretical Approaches And Applications)
year: 1993

id682instance
type: InProceedings
type: Publication
author: id67instance
author: id385instance
booktitle: Proceedings of the Workshop Machine Learning at the 17th German Conference on Artificial Intelligence (KI-93), Berlin, September 13-16, 1993
title: Maschinelles Lernen: Theoretische Ansätze und Anwendungen (Machine Learning: Theoretical Approaches And Applications)
year: 1993

id683instance
type: InProceedings
type: Publication
author: id26instance
author: id41instance
author: id57instance
author: id67instance
booktitle: Proceedings of the Workshop "Alles für die Katz, KADS?" at the 17th German Conference on Artificial Intelligence (KI-93), Berlin, September 13-16, 1993
title: Integration von Software Engineering Methoden in den KADS-Ansatz (Integration Of Software Engineering And KADS)
year: 1993

id684instance
type: InProceedings
type: Publication
author: id41instance
author: id57instance
author: id67instance
booktitle: Proceedings of the 9th German Workshop on Logic Programming, Hagen, Germany, October 11-13, 1993
title: Logic Programming With KARL
year: 1993

id685instance
type: InProceedings
type: Publication
author: id67instance
booktitle: Proceedings of the 6th Annual Workshop on Software Reuse (WISR-6), Owego, New York, November 1-4, 1993
title: Reuse Of Problem-Solving Methods In Knowledge Engineering (short paper)
year: 1993

id686instance
type: InCollection
type: Publication
author: id41instance
author: id57instance
author: id67instance
booktitle: Wissensbasierte Systeme in der Betriebswirtschaft, Reihe betriebliche Informations- und Kommunikationssysteme
number: 15
title: What Could The Knowledge Engineer Learn From The Software Engineer?
year: 1990

id687instance
type: Proceedings
type: Publication
abstract: In the series of “Evaluation of Ontology-based Tools” workshops we intend to bring together researchers and practitioners from the fastly developing research areas “ontologies” and “Semantic Web”. Currently the semantic web attracts researchers from all around the world. Numerous tools and applications of semantic web technologies are already available and the number is growing fast. However, deploying large scale ontology solutions typically involves several separate tasks and requires applying multiple tools. Therefore pragmatic issues such as interoperability are key if industry is to be encouraged to take up ontology technology rapidly. The main aim of this workshop is therefore to encourage and stimulate discussions about the evaluation of ontology-based tools. For the future this effort might lead to future benchmarks and certifications.
editor: id20instance
editor: id111instance
editor: id386instance
editor: id387instance
has project: id42instance
has project: id43instance
has project: id49instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
month: November
note: Workshop at the 3rd International Semantic Web Conference (ISWC 2004), 7th-11th November 2004, Hiroshima Prince Hotel, Hiroshima, Japan
title: 3rd International Workshop on Evaluation of Ontology based Tools (EON2004)
volume: 128
year: 2004

id688instance
type: Proceedings
type: Publication
abstract: The intention of the workshop is to bring together researchers from the two research areas Semantic Web and Knowledge Discovery. According to T. Berners-Lee the Semantic Web is "an extension of the current web in which information is given well-defined meaning, better enabling computers and people to work in cooperation". Current standardization efforts include e.g. the W3C recommendation for the Web Ontology Language (OWL). Knowledge Discovery is defined by U.M. Fayyad as "the nontrivial process of identifying valid, previously unknown, potentially useful patterns in data". We foresee two ways of combining these areas. On the one hand, mining for the semantic web includes the application of knowledge discovery methods and techniques to support the setting up of the semantic web itself. Prominent examples are here ontology learning and population of ontologies (instance learning). On the other hand, mining from the semantic web emphasizes the usage of semantic web technologies for mining purposes such as e.g. the usage of taxonomies in recommender systems, applying association rules with generalizations or clustering with background knowledge in form of ontologies.
editor: id14instance
editor: id20instance
editor: id388instance
has project: id42instance
has project: id43instance
has project: id49instance
is about: id134instance
is about: id71instance
is about: id79instance
month: August
note: located at the 10th International ACM SIGKDD Conference on Knowledge Discovery and Data Mining KDD 2004, 22nd August 2004 - Seattle, WA, USA
title: International Workshop on Mining for and from the Semantic Web (MSW2004)
year: 2004

id689instance
type: InProceedings
type: Publication
abstract: Turning the current Web into a Semantic Web requires automatic approaches for annotation of existing data since manual approaches will not scale in general. We here present an approach for automatic generation of frames out of tables which subsequently supports the automatic population of ontologies from table-like structures. The approach consists of a methodology, an accompanying implementation and a thorough evaluation. It is based on a grounded cognitive table model which is stepwise instantiated by our methodology.
author: id2056instance
author: id20instance
author: id98instance
booktitle: Proceedings of the 3rd International Semantic Web Conference (ISWC2004), 7th-11th November 2004, Hiroshima Prince Hotel, Hiroshima, Japan
has project: id42instance
has project: id49instance
is about: id49instance
is about: id71instance
is about: id79instance
month: November
note: Nominated for best paper award!
pages: 166-181
series: LNCS
title: From Tables to Frames
volume: 3298
year: 2004

id68instance
type: InProceedings
type: Publication
abstract: In this paper, we present a novel approach for the management of ontology-based knowledge portals. The approach is based on the analysis of the factors, which influence the precision of the searching for information. We focus on the structure of user queries, which are an estimation of the user information needs. Two kinds of analyses of the users’ queries are performed: static - related to the ontological properties and dynamic - related to the users’ interaction with the system. Regarding to the first analysis we define several assessment criteria for the quality of the metadata. For the second analysis, we introduced the Log ontology as a backbone for storing and analysing information about users’ behaviours in the Portal. We extended the previous research done in the analysing Query logs by introducing query-rewriting patterns. Moreover, we developed a new technology for tracking users’ interactions with the system, which is applied in our case study. The short evaluation shows the benefits of our approach in the real-world portals.
author: id32instance
author: id53instance
author: id88instance
booktitle: Fourth International Conference on Practical Aspects of Knowledge Management (PAKM 2002), Vienna
has project: id32instance
is about: id104instance
is about: id68instance
pages: 310-316
title: More efficient searching in a knowledge portal - an approach based on the analysis of users queries
year: 2002

id690instance
type: InProceedings
type: Publication
address: Valencia, Spain
author: id2055instance
author: id6instance
author: id83instance
booktitle: Proceedings of the 16th European Conference on Artificial Intelligence (ECAI 2004), August 22nd - 27th
has project: id30instance
has project: id42instance
has project: id49instance
is about: id123instance
is about: id29instance
is about: id55instance
is about: id68instance
is about: id69instance
is about: id70instance
month: August
pages: 393--397
title: DILIGENT: Towards a fine-grained methodology for DIstributed, Loosely-controlled and evolvInG Engingeering of oNTologies
year: 2004

id692instance
type: InProceedings
type: Publication
address: Ulm, Germany
author: id76instance
author: id80instance
author: id90instance
booktitle: Informatik 2004 - Informatik verbindet, Beiträge der 34. Jahrestagung der Gesellschaft für Informatik e.V., Workshop Semantische Technologien für Informationsportale
has project: id30instance
has project: id32instance
is about: id79instance
month: September
pages: 187-193
title: Ontologie-basiertes Web-Mining
volume: 2
year: 2004

id694instance
type: InProceedings
type: Publication
address: Porto, Portugal
author: id1876instance
author: id1954instance
author: id2088instance
booktitle: Proceedings of the 1st International Workshop on Computer Supported Activity Coordination (CSAC 2004) in conjunction with the International Conference on Enterprise Information Systems (ICEIS 2004)
month: April
pages: 136-148
title: Modeling Processes for Managing Reputation Information - A Petri Net Approach
year: 2004

id695instance
type: InProceedings
type: Publication
address: Cambridge, USA
author: id1876instance
author: id2088instance
booktitle: Proceedings of the IASTED International Conference APPLIED MODELLING AND SIMULATION (AMS 2002)
month: November
pages: 235-240
title: Certifying Business Processes to Build Trust in E-Business
year: 2002

id696instance
type: InProceedings
type: Publication
address: Bled/Slovenia
author: id389instance
booktitle: Proceedings of the 16th Bled Electronic Commerce Conference, eTransformation
month: June
title: Information and Communications Technology in Croatia: Hope carrier for more growth?
year: 2003

id697instance
type: InProceedings
type: Publication
address: Bled/Slovenia
author: id2088instance
author: id389instance
author: id390instance
booktitle: Proceedings of the 16th Bled Electronic Commerce Conference, eTransformation
month: June
title: Information and Communications Technology in Croatia: Hope carrier for more growth?
year: 2003

id698instance
type: InProceedings
type: Publication
author: id2023instance
author: id2067instance
author: id6instance
author: id80instance
author: id83instance
author: id125instance
author: id280instance
author: id393instance
author: id394instance
author: id81instance
booktitle: Proceedings of the Third International Semantic Web Conference, Hiroshima, Japan, 2004
has project: id30instance
has project: id54instance
has project: id55instance
is about: id117instance
is about: id123instance
month: November
pages: 122--136
series: LNCS
title: Bibster - A Semantics-Based Bibliographic Peer-to-Peer System
volume: 3298
year: 2004

id699instance
type: InProceedings
type: Publication
abstract: We present a workbench for integrating Web documents into semantically enriched representations suitable on the Semantic Web. The approach benefits on the one hand from thefacilities provided by Semantic Web technologies and on the other hand from the applicability of well-known knowledge discovery techniques. The main achievement of our contribution is an up-and-running, open and component based prototype which can be easily extended by 3rd parties.
author: id20instance
author: id90instance
booktitle: Workshop on Mining for and from the Semantic Web at the ACM SIGKDD
has project: id32instance
has project: id42instance
has project: id43instance
has project: id49instance
is about: id104instance
is about: id71instance
is about: id79instance
is about: id83instance
month: August
title: A Knowledge Discovery Workbench for the Semantic Web
year: 2004

id69instance
type: InProceedings
type: Publication
abstract: In this paper, we present a novel approach for the change discovery in the ontology-based knowledge management systems. It extends our previous work in the ontology evolution by taking into account the usage of the ontology in the knowledge management system. The approach is mainly based on the analysis of the user’s interaction with the system in providing annotations for knowledge resources, as well as in the process of accessing the knowledge by querying the knowledge repository. We defined several assessment criteria to estimate the quality of annotations and the user’s needs from the point of view of the knowledge management. These criteria result in the recommendations for the continual system improvement. Two evaluation studies illustrate the benefits of our approach.
author: id32instance
author: id53instance
booktitle: Second International Workshop on Evolution and Change in Data Management (ECDM 2002), held in conjunction with the 21st International Conference on Conceptual Modelling, ER 2002, Tampere, Finland
is about: id70instance
pages: 130-142
title: Change Discovery in the Ontology-based Knowledge Management Systems
year: 2002

id6instance
type: InProceedings
type: Publication
abstract: OntoWeb is an European Union IST-funded thematic network for Ontology-based information exchange for knowledge management and electronic commerce. The corresponding OntoWeb portal constitutes a Web-based research information system that is driven by some of the technologies which it reports about. In this paper, we present the core methodology underlying the OntoWeb portal, viz. SEAL (SEmantic portAL). In particular, we describe some of the core challenges that SEAL must meet. Because of the distributed nature of research information, SEAL has been developed as a methodology that integrates heterogeneous information from distributed resources. Because of the complexity of the application domain, SEAL is based on ontologies about research information that greatly contribute to the combined goals of low-effort information integration and user-friendly information presentation. Because of the high quality requirements obliged onto the OntoWeb portal, SEAL has been extended with content management functionality supporting portal editors in their process to rule out undesirable content.
author: id20instance
author: id40instance
author: id57instance
author: id6instance
booktitle: Gaining Insight from Research Information. CRIS 2002 - Proceedings of the 6th Conference on Current Research Information Systems, August 29-31, 2002, Kassel, Germany
has project: id10instance
is about: id100instance
is about: id102instance
is about: id1instance
is about: id52instance
is about: id80instance
is about: id90instance
pages: 95-104
title: SEAL - a SEmantic portAL with content management functionality
year: 2002

id700instance
type: Article
type: Publication
abstract: Ontology technologies are popular and attract much attention because they’re cornerstones for realizing the Semantic Web. This issue’s Trends and Controversies explores different perspectives on evaluating ontology technologies. It examines the distinction between evaluating ontology tools and ontology content and also discusses ontology consumers' needs.
author: id20instance
author: id115instance
author: id395instance
author: id396instance
author: id397instance
author: id55instance
has project: id42instance
has project: id43instance
has project: id49instance
is about: id69instance
is about: id70instance
is about: id79instance
journal: IEEE Intelligent Systems
month: July
number: 4
pages: 74-81
title: Why Evaluate Ontology Technologies? Because It Works!
volume: 19
year: 2004

id701instance
type: InProceedings
type: Publication
address: Hiroshima, Japan
author: id6instance
author: id80instance
booktitle: Proceedings of the Third International Semantic Web Conference
has project: id28instance
has project: id30instance
has project: id42instance
has project: id49instance
is about: id79instance
month: November
pages: 683-697
title: QOM - Quick Ontology Mapping
volume: volume 3298 of LNCS
year: 2004

id702instance
type: Proceedings
type: Publication
abstract: The explosion of data caused by the success of the Internet has positioned 'semantics' as a core topic for declarative descriptions of data and services. Semantic descriptions enable interoperability of data and aim at supporting the dynamic fusion of data and services among a multitude of applications. The convergence of paradigms such as currently being monitored in the areas of Semantic Web, Web Services, Agents, Peer-to-Peer networks and Grid Computing requires multi-disciplinary approaches and cooperations. This workshop is intends to bring together researchers and practitioners from the mentioned areas and to act as a platfrom for discussions for experiences and visions.
editor: id20instance
editor: id6instance
editor: id398instance
has project: id42instance
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is about: id102instance
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is about: id53instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id71instance
is about: id79instance
is about: id80instance
is about: id81instance
month: September
note: Workshop located at the "Informatik 2004 - Informatik verbindet", Friday, 24th Sep 2004, University of Ulm
title: Workshop on Semantic Web Services and Dynamic Networks (SWSDN2004)
year: 2004

id704instance
type: Proceedings
type: Publication
abstract: Ontologies provide a shared understanding of a domain of interest to support communication among human and computer agents, typically being represented in a machine-processable representation language. Thus, ontologies are seen as key enablers for the Semantic Web. However, recently the convergence of paradigms such as currently being monitored in the areas of Semantic Web, Web Services, Agents, Peer-to-Peer networks and Grid Computing requires multi-disciplinary approaches and cooperation. This workshop is intends to bring together researchers and practitioners from the mentioned areas and to act as a platform for discussions for experiences and visions.
editor: id20instance
editor: id79instance
editor: id127instance
editor: id237instance
editor: id474instance
editor: id475instance
editor: id476instance
editor: id477instance
editor: id478instance
editor: id479instance
editor: id480instance
editor: id481instance
has project: id42instance
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is about: id123instance
is about: id68instance
is about: id69instance
is about: id70instance
month: November
series: LNCS
title: Web Information Systems - WISE 2004 Workshops, WISE 2004 International Workshops, Brisbane, Australia, November 22-24, 2004, Proceedings
volume: 3307
year: 2004

id705instance
type: Publication
type: TechnicalReport
author: id20instance
author: id57instance
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is about: id102instance
is about: id103instance
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is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
series: 3
title: OntoEdit
type: On-To-Knowledge deliverable
year: 2001

id706instance
type: Publication
type: TechnicalReport
author: id20instance
author: id57instance
author: id60instance
author: id399instance
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is about: id102instance
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is about: id79instance
series: 15
title: On-To-Knowledge Methodology --- Baseline Version
type: On-To-Knowledge deliverable
year: 2000

id707instance
type: Publication
type: TechnicalReport
author: id20instance
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is about: id102instance
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is about: id79instance
series: 16
title: On-To-Knowledge Methodology --- Evaluated and Employed Version
type: On-To-Knowledge deliverable
year: 2001

id708instance
type: Publication
type: TechnicalReport
author: id20instance
author: id57instance
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is about: id102instance
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series: 17
title: On-To-Knowledge Methodology --- Expanded Version
type: On-To-Knowledge deliverable
year: 2002

id709instance
type: Publication
type: TechnicalReport
author: id20instance
author: id57instance
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is about: id102instance
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is about: id70instance
is about: id79instance
series: 18
title: On-To-Knowledge Methodology --- Final Version
type: On-To-Knowledge deliverable
year: 2002

id70instance
type: InProceedings
type: Publication
abstract: In this paper, we present a novel approach for the management of the ontology-based knowledge management system. It extends our previous work in the ontology evolution by taking into account the usage of the ontology in the knowledge management system. The approach is mainly based on the analysis of the users’ behaviour in two phases of a knowledge management cycle: (i) in providing knowledge by analysing the quality of annotations and (ii) in searching for knowledge by analysing users’ queries and the responses from the knowledge repository. This analysis results in the recommendations for changes in the underlying ontology, the annotations and/or the knowledge repository in order to make the whole system more efficient. We present two short case studies.
author: id32instance
author: id53instance
booktitle: International Conference on Ontologies, Databases and Applications of SEmantics, (ODBASE 2002), Irvine, CA
has project: id32instance
is about: id102instance
is about: id104instance
pages: 230-242
title: Usage-oriented Evolution of Ontology-based Knowledge Management Systems
year: 2002

id710instance
type: Publication
type: TechnicalReport
author: id20instance
author: id57instance
author: id67instance
author: id68instance
author: id18instance
author: id19instance
author: id220instance
author: id222instance
author: id399instance
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author: id401instance
author: id402instance
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author: id61instance
author: id6instance
author: id81instance
author: id95instance
has project: id11instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
is about: id80instance
title: Final Project Report
type: On-To-Knowledge deliverable
year: 2002

id711instance
type: Publication
type: TechnicalReport
author: id20instance
has project: id11instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
is about: id80instance
title: On-To-Knowledge Technical Fact Sheet for the OTK Tool Suite Demo
type: On-To-Knowledge technical fact sheet
year: 2002

id712instance
type: Publication
type: TechnicalReport
author: id2053instance
author: id2054instance
author: id20instance
has project: id42instance
has project: id49instance
is about: id69instance
is about: id70instance
is about: id71instance
is about: id79instance
is about: id80instance
series: 3.1.1.a
title: KAON -- Ontology Management Infrastructure
type: SEKT informal deliverable
year: 2004

id713instance
type: Publication
type: TechnicalReport
author: id20instance
author: id68instance
author: id111instance
author: id115instance
author: id180instance
author: id401instance
author: id406instance
author: id407instance
author: id408instance
author: id409instance
author: id410instance
author: id411instance
author: id412instance
author: id413instance
author: id414instance
author: id415instance
author: id416instance
author: id417instance
author: id418instance
author: id419instance
author: id420instance
author: id421instance
author: id422instance
author: id423instance
author: id55instance
has project: id10instance
is about: id102instance
is about: id104instance
is about: id68instance
is about: id79instance
is about: id80instance
series: 1.1.2
title: Technical Roadmap
type: OntoWeb deliverable
year: 2002

id714instance
type: Publication
type: TechnicalReport
author: id20instance
author: id115instance
author: id406instance
author: id410instance
author: id424instance
author: id425instance
has project: id10instance
is about: id104instance
is about: id69instance
is about: id70instance
is about: id79instance
series: 1.3
title: A survey on ontology tools
type: OntoWeb deliverable
year: 2002

id715instance
type: Publication
type: TechnicalReport
author: id20instance
author: id53instance
author: id8instance
author: id115instance
author: id122instance
author: id386instance
author: id406instance
author: id415instance
author: id426instance
author: id427instance
author: id428instance
has project: id10instance
is about: id79instance
series: 1.4
title: A survey on methodologies for developing, maintaining, integrating, evaluating and reengineering ontologies
type: OntoWeb deliverable
year: 2002

id716instance
type: Publication
type: TechnicalReport
author: id13instance
author: id20instance
author: id57instance
author: id115instance
author: id399instance
author: id401instance
author: id429instance
author: id430instance
author: id431instance
author: id432instance
author: id433instance
author: id434instance
author: id435instance
author: id436instance
has project: id10instance
is about: id102instance
is about: id104instance
is about: id68instance
is about: id79instance
series: 2.1
title: Successful Scenarios for Ontology-based Applications
type: OntoWeb deliverable
year: 2002

id717instance
type: Publication
type: TechnicalReport
author: id20instance
author: id115instance
author: id401instance
author: id406instance
author: id429instance
author: id432instance
author: id434instance
author: id437instance
author: id438instance
author: id439instance
has project: id10instance
is about: id102instance
is about: id79instance
series: 2.2
title: Best Practices and Guidelines
type: OntoWeb deliverable
year: 2002

id718instance
type: Publication
type: TechnicalReport
author: id20instance
author: id40instance
author: id57instance
author: id29instance
author: id440instance
has project: id10instance
is about: id102instance
is about: id103instance
is about: id52instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
series: 6.1
title: Seed Ontology
type: OntoWeb deliverable
year: 2001

id719instance
type: Publication
type: TechnicalReport
author: id20instance
author: id40instance
author: id57instance
author: id29instance
author: id440instance
has project: id10instance
is about: id102instance
is about: id104instance
is about: id52instance
is about: id68instance
is about: id69instance
is about: id70instance
series: 6.2
title: Creation of a browsable Prototype of the Portal
type: OntoWeb deliverable
year: 2001

id720instance
type: Publication
type: TechnicalReport
author: id20instance
author: id40instance
author: id57instance
author: id441instance
has project: id10instance
is about: id102instance
is about: id104instance
is about: id52instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
series: 6.3
title: Web Portal: Complete Ontology and Portal
type: OntoWeb deliverable
year: 2002

id721instance
type: Publication
type: TechnicalReport
author: id20instance
author: id40instance
author: id57instance
author: id90instance
has project: id10instance
is about: id104instance
is about: id52instance
is about: id68instance
is about: id69instance
is about: id70instance
series: 6.4
title: Extended OntoWeb.org Portal
type: OntoWeb deliverable
year: 2003

id722instance
type: Publication
type: TechnicalReport
author: id20instance
author: id57instance
author: id90instance
author: id26instance
author: id29instance
author: id442instance
has project: id10instance
is about: id102instance
is about: id104instance
is about: id52instance
is about: id68instance
is about: id79instance
series: 6.5
title: OntoWeb Portal: Content Upkeep
type: OntoWeb deliverable
year: 2004

id723instance
type: InCollection
type: Publication
author: id26instance
author: id41instance
author: id67instance
booktitle: Informationssysteme und Künstliche Intelligenz: Modellierung, Informatik Fachbericht
number: 303
title: Two Languages To Do The Same?
year: 1992

id724instance
type: InProceedings
type: Publication
author: id67instance
booktitle: Contemporary Knowledge Engineering And Cognition
series: Lecture Notes in Artificial Intelligence
title: Knowledge Acquisition And The Interpretative Paradigm
volume: 622
year: 1992

id725instance
type: InProceedings
type: Publication
author: id67instance
author: id443instance
author: id444instance
booktitle: Proceedings of the 2nd KADS User Meeting, Munich, February 17-18, 1992
title: Modelling The Selection Of Scheduling Algorithm With KARL
year: 1992

id726instance
type: InProceedings
type: Publication
author: id67instance
author: id443instance
author: id444instance
booktitle: Interpretation Models for KADS - Proceedings of the 2nd KADS User Meeting (KUM-92)
number: 212
series: GMD report
title: Modelling The Selection Of Scheduling Algorithm With KARL
year: 1992

id727instance
type: InProceedings
type: Publication
author: id26instance
author: id41instance
author: id67instance
booktitle: Sisyphus-92: Models Of Problem Solving
month: March
number: 630
series: GMD Reports
title: An Executable Model At The Knowledge Level For The Office-Assignment Task
year: 1992

id728instance
type: InProceedings
type: Publication
author: id67instance
booktitle: Proceedings of the AAAI Spring Symposien Series, Cognitive Foundations of Knowledge Acquisition, Stanford, March 25-27, 1992
month: March
title: Knowledge Acquisition And Qualitatively Oriented Social Science
year: 1992

id729instance
type: InProceedings
type: Publication
author: id26instance
author: id41instance
author: id57instance
author: id67instance
booktitle: Sisyphus -91: Models Of Problem Solving
month: July
title: An Assignment Problem In Sisyphus - No Problem With KARL
year: 1992

id730instance
type: InProceedings
type: Publication
author: id57instance
author: id67instance
booktitle: Proceedings of the 7th Banff Knowledge Acquisition for Knowledge-Based System Workshop (KAW-92), Banff, Canada, October 11-16, 1992
title: An Analysis Of Languages Operationalizing And Formalizing KADS Models Of Expertise
year: 1992

id731instance
type: InProceedings
type: Publication
author: id26instance
author: id41instance
author: id57instance
author: id67instance
author: id374instance
booktitle: Text Understanding in LILOG: Integrating Computational Linguistics and Artificial Intelligence
series: Lecture Notes in Artificial Intelligence
title: Knowledge Engineering In The Context Of Related Fields Of Research
volume: 546
year: 1991

id732instance
type: InProceedings
type: Publication
author: id26instance
author: id41instance
author: id67instance
booktitle: Proceedings of the 11th International Conference Expert Systems And Their Applications, Avignon, May 27-31, 1991
series: General Conference Tools, Techniques and Methods
title: The Knowledge Acquisition And Representation Language (KARL)
volume: 1
year: 1991

id733instance
type: InProceedings
type: Publication
author: id26instance
author: id41instance
author: id57instance
author: id67instance
booktitle: Knowledge Acquisition: From Science to Technology to Tools, Workshop Notes from the Ninth National Conference on AI (AAAI-91), Anaheim, California
month: July
title: Explorative Prototyping With KADS
year: 1991

id734instance
type: InProceedings
type: Publication
author: id26instance
author: id41instance
author: id57instance
author: id67instance
booktitle: Proceedings of the 6th Knowledge Acquisition for Knowledge-Based Systems Workshop (KAW-91), Banff, Canada, October 6-11, 1991
title: KARL: An Executable Language For The Conceptual Model
year: 1991

id735instance
type: InProceedings
type: Publication
author: id67instance
author: id381instance
booktitle: Proceedings of the International Conference on Tools for Artificial Intelligence ICTAI'91, San Jose, CA, November 10-13, 1991
title: A New Approach To Rule Induction And Pruning (short paper)
year: 1991

id736instance
type: Publication
type: TechnicalReport
author: id2023instance
author: id2053instance
author: id2054instance
author: id20instance
author: id80instance
author: id83instance
has project: id42instance
has project: id49instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
series: 7.1.1.a
title: Use Cases -- Initial Version
type: SEKT informal deliverable
year: 2004

id737instance
type: Publication
type: TechnicalReport
author: id2023instance
author: id2053instance
author: id2054instance
author: id20instance
author: id80instance
author: id83instance
has project: id42instance
has project: id49instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id52instance
is about: id69instance
is about: id70instance
is about: id71instance
is about: id79instance
is about: id80instance
series: 7.1.1.b
title: Data Manual -- Initial Version
type: SEKT informal deliverable
year: 2004

id738instance
type: Publication
type: TechnicalReport
author: id2053instance
author: id2054instance
author: id20instance
has project: id42instance
has project: id49instance
is about: id52instance
series: 12.1.1
title: Web Site and Mailing Lists
type: SEKT deliverable
year: 2004

id739instance
type: Publication
type: TechnicalReport
abstract: Effektiver Zugriff auf Wissensinhalte benötigt eine gemeinsame Sprache zur Beschreibung der Wissensinhalte, sowie Methoden und Werkzeuge, die in der Lage sind, diese Beschreibung zu nutzen. In der Forschungsgruppe Wissensmanagement an der Universität Karlsruhe wurde ein ganzheitlicher Ansatz für Wissensmanagementsysteme konzipiert, der auf Ontologien, das sind eine Art formaler Begriffssysteme, beruhend, verschiedene Methoden zum intelligenten Ablegen und Zugreifen auf Wissen bereitstellt. Im Rahmen dieses Ansatzes wurde diverse Techniken erforscht, in Werkzeuge umgesetzt und ihre Prinzipien an Wissensportalen aufgezeigt. In diesem Artikel beschreiben wir die erste Implementierung eines kommerziellen ontologiebasierten Wissensmanagementsystems.
author: id20instance
author: id34instance
author: id50instance
author: id57instance
author: id60instance
author: id6instance
author: id83instance
author: id184instance
is about: id102instance
is about: id103instance
is about: id104instance
note: Awarded with the first prize of the Integrata foundation, Tübingen, (Dr. Wolfgang Heilmann Award for humane usage of information technology)
title: Arbeitsgerechte Bereitstellung von Wissen - Ontologien für das Wissensmanagement
year: 2001

id73instance
type: InProceedings
type: Publication
abstract: Finding right information in the right moment is quite a tedious task on the Web. The main difficulty is the wrong context in which information is found and, therefore, part of the problem lies in the process of providing metadata about information resources on the web. In other words, only by searching for keywords, which are assigned to the content of an information resource, a machine agent cannot differ between various contexts of using these keywords, and some non-relevant resources will be retrieved as the result of the searching process. In this paper, we propose a method for improving the annotation of information resources – by forming conditional statements about keywords used in the describing content of a resource. This kind of annotation leads to the better precision of the information retrieval process – by expressing the context of searching in a more precise manner. Moreover, such more expressive form of describing content of information resources supports a more powerful knowledge sharing process enabling the discovery of new information by considering the combination of existing information resources. In that way, the system provides some answers which are not explicitly stated in the information repository. We present a knowledge management framework, which implements such type of annotation and give a small evaluation study. The framework is supported by Semantic Web technologies, which are based on the machine-understandable description of document content, enabling in that way the automation of the knowledge sharing process.
author: id32instance
booktitle: SW-KM EKAW 2002
has project: id32instance
is about: id104instance
title: A novel approach for the document annotation and its benefits in the searching for knowledge
year: 2002

id740instance
type: Publication
type: TechnicalReport
author: id20instance
author: id57instance
author: id60instance
author: id6instance
is about: id102instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
title: Ontologiebasiertes Wissensmanagement - Ein umfassender Ansatz zur Gestaltung des Knowledge Life Cycle
year: 2001

id741instance
type: Publication
type: TechnicalReport
author: id20instance
has project: id10instance
is about: id79instance
title: Fact Sheet on Semantic Web
year: 2003

id742instance
type: Publication
type: TechnicalReport
author: id20instance
has project: id10instance
is about: id79instance
title: Fact Sheet on Ontologies
year: 2003

id743instance
type: InCollection
type: Publication
abstract: Das Teilprojekt AMSULA widmet sich der Frage, welche neuen Fragestellungen und Möglichkeiten es durch die Verfügbarkeit verschiedener Arten von Funknetzen und mobiler Endgeräte für Studierende und Universitätsangehörige gibt. Aufbauend auf einer Analyse der Erwartungshaltung von Studierenden und nach Einführung eines Modells zur Beurteilung mobiler Anwendungsszenarien werden die im Projekt gewonnenen Erfahrungen mit mobilen Lehrszenarien beschrieben. Hierbei werden die für die Lehre entwickelten NUKATH-Kooperations- Werkzeuge vorgestellt. Abschließen werden die Erkenntnisse aus dem Projekt in didaktische Folgerungen für die Notebook-Universität überführt.
address: Universitätsverlag Karlsruhe
author: id2008instance
author: id29instance
author: id87instance
booktitle: NUKATH - Die Notebook-Universität Karlsruhe (TH)
has project: id29instance
is about: id108instance
month: July
pages: 36-51
title: Anwendungen mobiler Systeme (AMSULA)
year: 2004

id744instance
type: InProceedings
type: Publication
abstract: Der Bildungsbereich unterliegt wie viele andere Bereiche einer modernen Gesellschaft dem soeben begonnenen Informationszeitalter. Dadurch entstehen neue Möglichkeiten lebenslanges Lernen mit Informations- und Kommunikationstechnologien zu unterstützen und einen Mehrwert für jeden Beteiligten im Bildungssektor zu liefern. Der Einsatz von Informations- und Kommunikationstechnologien geschieht im Rahmen der Internet-basierten Aus- und Weiterbildung. Das ed.tec-Rahmenwerk beschreibt die Geschäftsprozesse der beteiligten Rollen Autor, Dozent und Lernender und die Unterstützung durch Werkzeuge aus dem realisierenden ed.tec- System. Die Architektur berücksichtigt die anfallenden Geschäftsprozesse und wird anhand der hieraus hervorgehenden Anforderungen an das zu implementierende IT-System konzipiert. Dieser Beitrag beschreibt die Prozesse der beteiligten Rollen, ihre Anforderungen, die hieraus resultierende Architektur und der exemplarische Einsatz des implementierenden Systems.
author: id87instance
author: id445instance
author: id446instance
booktitle: LIT2002 Leipzig
month: September
title: Eine Werkzeugarchitektur zur Unterstützung von Autoren und Dozenten in der Internet-basierten Aus- und Weiterbildung
year: 2002

id746instance
type: InProceedings
type: Publication
author: id2040instance
author: id6instance
author: id98instance
author: id353instance
booktitle: Proceedings of the ECAI 2004 Ontology Learning and Population Workshop
has project: id35instance
title: Learning Taxonomic Relations from Heterogeneous Evidence
year: 2004

id747instance
type: Publication
type: TechnicalReport
abstract: This document is an informal deliverable provided to SEKT partners. The main aim of this document is to provide an overview of existing research results and ongoing research in the are of ontology evolution. It further identifies relevant open research questions with respect to ontology evolution that will be addressed within the SEKT project.
author: id2023instance
author: id20instance
has project: id42instance
has project: id49instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
is about: id80instance
series: 3.1.1.b
title: State-of-the-Art on Ontology Evolution
type: SEKT informal deliverable
year: 2004

id748instance
type: InProceedings
type: Publication
abstract: In Peer-to-Peer data sharing systems, peers typically play equal roles and have equal capabilities. From the service perspective, peers provide a single service. For this reason, there is no need to explicitly model services. We argue, that for knowledge sharing systems, we need an effective combination of the capabilities of the peers both in terms of the services as well as the content they provide. In this paper we present an approach for modeling peers with content and service capability descriptions that allows a decentralized discovery and selection of peers. We show instantiations for various kinds of bibliographic services that are realized in the Bibster system, a semantics-based Peer-to-Peer system for sharing bibliographic metadata.
author: id2023instance
author: id20instance
author: id91instance
booktitle: Web Information Systems Engineering -- Workshop Proceedings, November 22nd, 2004, Brisbane, Australia
has project: id30instance
has project: id38instance
has project: id42instance
has project: id49instance
has project: id51instance
is about: id123instance
is about: id136instance
is about: id79instance
pages: 46-57
series: LNCS
title: Service-Oriented Semantic Peer-to-Peer Systems
volume: 3307
year: 2004

id74instance
type: Article
type: Publication
author: id6instance
author: id138instance
author: id139instance
author: id140instance
author: id50instance
author: id51instance
author: id52instance
author: id54instance
is about: id100instance
is about: id107instance
is about: id10instance
is about: id11instance
is about: id19instance
is about: id48instance
is about: id53instance
is about: id55instance
journal: IEEE Intelligent Systems
month: November
note: Trends & Controversies
number: 6
pages: 53-66
title: Intelligent Systems for Tourism
volume: 17
year: 2002

id750instance
type: InProceedings
type: Publication
address: Agia Napa, Cyprus
author: id2078instance
author: id80instance
author: id83instance
booktitle: On the Move to Meaningful Internet Systems 2004: CoopIS, DOA, and ODBASE, OTM Confederated International Conferences, Agia Napa, Cyprus, October 25-29, 2004, Proceedings, Part I
has project: id30instance
has project: id39instance
has project: id42instance
has project: id49instance
is about: id49instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id71instance
month: October
pages: 618-636
series: Lecture Notes in Computer Science
title: Knowledge Extraction from Classifiaction Schemas
volume: 3290
year: 2004

id751instance
type: Article
type: Publication
author: id13instance
author: id6instance
author: id91instance
has project: id32instance
has project: id38instance
has project: id51instance
is about: id119instance
is about: id136instance
is about: id137instance
is about: id79instance
is about: id81instance
journal: Journal on Web Semantics
number: 1
pages: 1-24
title: Annotation, Composition and Invocation of Semantic Web Services
volume: 2
year: 2005

id752instance
type: InProceedings
type: Publication
abstract: Security is considered as a major driver for the success of E-Business, especially in a business-to-business environment. Current research activities in this area are conducted in European Union funded research projects, such as TrustCoM putting an emphasis on the collaborative aspects of business processes across administrative and trust domains. With respect to the tendency of business partners to set up their own security islands, e.g. based on isolated Public Key Infrastructures (PKIs), this development introduces a contradiction for collaborative business process. Clearly expressed process related security requirements across domains can not be met by domain specific security infrastructures. This contribution explores the possibility to bridge the identified gap using semantic relationships contributed by ontologies.
author: id20instance
author: id447instance
booktitle: Web Information Systems Engineering -- Workshop Proceedings, November 22nd, 2004, Brisbane, Australia
has project: id42instance
has project: id49instance
is about: id119instance
is about: id19instance
is about: id24instance
is about: id25instance
is about: id68instance
is about: id79instance
is about: id82instance
is about: id98instance
pages: 58-72
series: LNCS
title: Towards Cross-domain Security Properties supported by Ontologies
volume: 3307
year: 2004

id754instance
type: InProceedings
type: Publication
abstract: Intelligent systems based on first-order logic on the one hand, and on artificial neural networks (also called connectionist systems) on the other, differ substantially. It would be very desirable to combine the robust neural networking machinery with symbolic knowledge representation and reasoning paradigms like logic programming in such a way that the strengths of either paradigm will be retained. Current state-of-the-art research, however, fails by far to achieve this ultimate goal. As one of the main obstacles to be overcome we perceive the question how symbolic knowledge can be encoded by means of connectionist systems: Satisfactory answers to this will naturally lead the way to knowledge extraction algorithms and to integrated neural-symbolic systems.
author: id2084instance
author: id448instance
author: id449instance
booktitle: Proceedings of the Third International Conference on Information, Tokyo, Japan, November/December 2004
has project: id43instance
has project: id49instance
has project: id50instance
is about: id131instance
is about: id55instance
month: November
pages: 22-33
title: The Integration of Connectionism and First-Order Knowledge Representation and Reasoning as a Challenge for Artificial Intelligence
year: 2004

id755instance
type: InProceedings
type: Publication
address: Hiroshima, Japan
author: id2065instance
author: id2077instance
author: id40instance
author: id306instance
booktitle: Proceedings of the Third International Semantic Web Conference
has project: id39instance
has project: id42instance
has project: id43instance
has project: id49instance
is about: id69instance
month: November
pages: 198-213
title: Visual modeling of OWL DL ontologies using UML
year: 2004

id756instance
type: InProceedings
type: Publication
abstract: Dieser Beitrag stellt ein Konzept vor, wie ubiquitäres E-Learning durch eine zielgerechte Bereitstellung von Hard - und Software unterstützt werden kann. Dazu wird eine automatisierte, benutzerzentrierte Softwareverteilung für unterschiedlichste Hard- und Softwareplattformen und ein Verleihsystem für mobile Geräte vorgestellt. Neben den Grundfunktionalitäten umfasst das Konzept unter anderem einen personalisierten
author: id29instance
author: id46instance
author: id96instance
booktitle: DeLFI 2004: Die 2. e-Learning Fachtagung Informatik
has project: id29instance
is about: id20instance
is about: id87instance
month: September
pages: 67-78
series: Lecture Notes in Informatics - Proceedings, Series of the Gesellschaft für Informatik (GI)
title: Die "Softwaretankstelle" mit integriertem Verleihsystem für mobile Geräte
volume: P-52
year: 2004

id758instance
type: InProceedings
type: Publication
author: id2087instance
author: id451instance
booktitle: Enabling Organisations and Society through Information Systems, Proceedings of the 13th Australasian Conference on Information Systems (ACIS 2002), Melbourne
month: December
pages: 243-253
title: A Maturity Model for Quality Improvement in Knowledge Management
year: 2002

id759instance
type: InCollection
type: Publication
author: id1876instance
author: id2087instance
author: id263instance
booktitle: CRM-Systeme mit EAI - Konzeption, Implementierung und Evaluation
pages: 117-135
title: Die Integration des Wissensmanagement in den Entwicklungsprozess von CRM-Systemen
year: 2002

id75instance
type: Article
type: Publication
author: id6instance
author: id8instance
author: id9instance
has project: id28instance
is about: id79instance
journal: Sigmod Record
month: September
number: 3
title: The Semantic Web workshop at the 11th International WWW Conference (WWW-2002)
volume: 31
year: 2002

id760instance
type: InProceedings
type: Publication
author: id1876instance
author: id2087instance
author: id263instance
booktitle: Informatik 2001. Wirtschaft und Wissenschaft in der Network Economy - Visionen und Wirklichkeit, Tagungsband der GI/OCG Jahrestagung 2001, Wien
month: September
pages: 429-436
title: Ein wissensbasiertes Vorgehensmodell zur Gestaltung von CRM-Systemen
year: 2001

id761instance
type: Misc
type: Publication
author: id1876instance
author: id2087instance
howpublished: KnowTech 2003: 5. Konferenz zum Einsatz von Knowledgemanagement in Wirtschaft und Verwaltung, München
title: Kontinuierliche Qualitätsverbesserung im Wissensmanagement - ein prozessbasiertes Reifegradmodell
year: 2003

id762instance
type: InProceedings
type: Publication
author: id2087instance
author: id452instance
author: id453instance
booktitle: Proceedings der Data Warehousing 2002 (DW2002): Vom Knowledge Warehouse zum Corporate Knowledge Center
pages: 287-299
title: Data Warehousing und Knowledge Management in der Logistik - Praxisbeispiele und Erfolgsfaktoren
year: 2002

id763instance
type: InProceedings
type: Publication
author: id2087instance
author: id452instance
booktitle: Competitive & Business Intelligence - Neue Konzepte, Methoden & Instrumente
pages: 29-50
title: Integration von Knowlege Warehouses und Knowlege Networks - Konzept und Methodik am Beispiel des Intelligent Supplier Management
year: 2002

id765instance
type: Article
type: Publication
author: id40instance
author: id6instance
author: id79instance
has project: id28instance
is about: id129instance
is about: id135instance
is about: id58instance
is about: id69instance
journal: Künstliche Intelligenz
number: 1
pages: 31-35
title: Three Dimensions of Knowledge Representation in WonderWeb
volume: 05
year: 2005

id766instance
type: InProceedings
type: Publication
author: id79instance
booktitle: Proceedings of the 1st International Doctoral Symposium on Middleware, Toronto, Ontario, Canada
has project: id28instance
has project: id50instance
is about: id135instance
month: October
pages: 299 - 303
title: Semantic Management of Middleware
year: 2004

id767instance
type: Misc
type: Publication
author: id2065instance
author: id2084instance
author: id57instance
author: id6instance
author: id79instance
author: id98instance
has project: id50instance
howpublished: SmartWeb Project Report
month: September
title: The SmartWeb Foundational Ontology
year: 2004

id768instance
type: Publication
type: TechnicalReport
abstract: An intersection of OWL with (function-free non-disjunctive) Datalog, called DLP (for Description Logic Programs), has recently been described. We provide normal forms for DLP in Description Logic syntax and in Datalog syntax.
author: id2065instance
author: id2084instance
has project: id43instance
has project: id49instance
has project: id50instance
is about: id105instance
is about: id129instance
is about: id55instance
is about: id79instance
month: September
title: Description Logic Programs: Normal Forms
year: 2004

id769instance
type: Book
type: Publication
address: München
author: id28instance
author: id2instance
author: id108instance
edition: 2., neu bearbeitete Auflage
is about: id67instance
isbn: 3-446-22878-0
month: September
title: Grundkurs Programmieren in Java - Band 1: Der Einstieg in Programmierung und Objektorientierung
year: 2004

id76instance
type: Article
type: Publication
author: id6instance
author: id30instance
author: id56instance
author: id57instance
author: id58instance
is about: id15instance
is about: id71instance
journal: IEEE Intelligent Systems
month: January
note: Trends & Controversies
number: 1
pages: 78-86
title: Emergent Semantics
volume: 17
year: 2002

id770instance
type: InProceedings
type: Publication
author: id2084instance
booktitle: KI2004: Advances in Artificial Intelligence. Proceedings of the 27th Annual German Conference on AI, KI2004, Ulm, Germany
has project: id43instance
has project: id49instance
has project: id50instance
is about: id130instance
is about: id132instance
is about: id36instance
is about: id55instance
is about: id58instance
month: September
pages: 351-365
series: Lecture Notes in Artificial Intelligence
title: Default Reasoning over Domains and Concept Hierarchies
volume: 3238
year: 2004

id771instance
type: InProceedings
type: Publication
abstract: The integration of symbolic and neural-network-based artificial intelligence paradigms constitutes a very challenging area of research. The overall aim is to merge these two very different major approaches to intelligent systems engineering while retaining their respective strengths. For symbolic paradigms that use the syntax of some first-order language this appears to be particularly difficult. In this paper, we will extend on an idea proposed by Garcez and Gabbay (2004) and show how first-order logic programs can be represented by fibred neural networks. The idea is to use a neural network to iterate a global counter n. For each clause Ci in the logic program, this counter is combined (fibred) with another neural network, which determines whether Ci outputs an atom of level n for a given interpretation I. As a result, the fibred network computes the singlestep operator TP of the logic program, thus capturing the semantics of the program.
author: id2084instance
author: id448instance
author: id454instance
booktitle: Proceedings of the Eighteenth International Florida Artificial Intelligence Research Symposium Conference, Clearwater Beach, Florida, USA
has project: id43instance
has project: id50instance
month: May
pages: 314-319
title: Computing First-Order Logic Programs by Fibring Artificial Neural Networks
year: 2005

id772instance
type: Book
type: Publication
author: id2065instance
author: id456instance
author: id457instance
author: id458instance
author: id459instance
isbn: 3446229469
title: Java 5.0 - Konzepte, Grundlagen und Erweiterungen in 5.0
year: 2004

id773instance
type: Article
type: Publication
author: id2065instance
journal: Praxis der Informationsverarbeitung und Kommunikation
number: 3
pages: 145-151
title: Semantics for Service Oriented Architectures
year: 2004

id774instance
type: InProceedings
type: Publication
author: id2065instance
author: id460instance
booktitle: 7. Internationale Tagung Wirtschaftsinformatik, Track Internetökonomie
title: An Auction Reference Model for Describing and Running Auctions
year: 2005

id775instance
type: InProceedings
type: Publication
abstract: In retail information systems it is common practice to subsume the data of products into product groups, which offers organizational advantages for example when new branches are opened, because they are assigned product groups instead of single products. Inspired by this approach, this paper focuses on business processes and proposes the usage of workflow modules stored in a workflow warehouse, which represent reusable, standardized components that are used to build more complex workflow models. In particular, the paper provides a formal foundation for such compositions in form of a workflow algebra based on Petri nets, which has similar operators known from relational algebra in databases. In addition, the need for a concept of workflow normalization is presented, which arises during the composition of workflow modules. Finally, it is shown how the algebra can also be applied in the context of Web service composition.
address: Newcastle, Australia
author: id2044instance
author: id38instance
booktitle: Proc. of the Second Asia-Pacific Conference on Conceptual Modelling (APCCM2005)
is about: id106instance
is about: id124instance
is about: id137instance
is about: id9instance
month: January
note: (also available at ACM Digital Library)
pages: 79-88
title: A Formal Foundation for Workflow Composition, Workflow View Definition, and Workflow Normalization based on Petri Nets
year: 2005

id776instance
type: Publication
type: TechnicalReport
author: id6instance
author: id80instance
has project: id30instance
has project: id42instance
has project: id49instance
is about: id72instance
month: August
title: QOM - Quick Ontology Mapping
year: 2004

id777instance
type: InProceedings
type: Publication
author: id2023instance
author: id32instance
author: id80instance
author: id93instance
booktitle: Workshop Enterprise Modelling and Ontology: Ingredients for Interoperability, at PAKM 2004
has project: id30instance
has project: id42instance
has project: id49instance
is about: id55instance
is about: id68instance
month: December
title: Similarity for Ontologies - a Comprehensive Framework
year: 2004

id778instance
type: InProceedings
type: Publication
abstract: Learning Objects (LOs) have evolved as a means to organize, encapsulate, and exchange reusable granules of learning material between different e-learning systems. A common problem encountered in practical situations is that conceptually coherent learning material may be distributed across several LOs, a problem which may originate in the way the material is decomposed into LOs. From a maintenance perspective, modifications and updates of such material are tedious and expensive, since modifications may have to be done in various locations in several LOs. This paper proposes to remedy this problem by using solutions already established in the area of Aspect-Oriented Programming (AOP). Furthermore, it is shown from a reengineering perspective how crosscutting concerns of LOs can be modularized as aspects and how aspects can be linked with LOs using XQUERY.
address: Grindelwald, Switzerland
author: id2044instance
booktitle: 4th IASTED International Conference on Web-based Education (WBE2005)
is about: id101instance
is about: id140instance
is about: id149instance
is about: id20instance
is about: id56instance
is about: id57instance
month: February
title: Aspect-Oriented Learning Objects
year: 2005

id779instance
type: Book
type: Publication
address: Stuttgart, Leipzig, Wiesbaden
author: id31instance
author: id38instance
edition: Reihe Wirtschaftsinformatik
is about: id106instance
is about: id12instance
is about: id41instance
isbn: 3-519-00491-7
month: May
title: Business-Process- und Workflow-Management: Prozessverbesserung durch Prozess-Management
year: 2004

id77instance
type: Article
type: Publication
author: id6instance
author: id59instance
author: id60instance
author: id61instance
author: id62instance
author: id63instance
author: id64instance
author: id65instance
author: id66instance
has project: id28instance
is about: id53instance
is about: id71instance
is about: id79instance
is about: id80instance
journal: IEEE Intelligent Systems
month: March
note: Trends & Controversies
number: 2
pages: 70-79
title: Ontologies' KISSES in Standardization
volume: 17
year: 2002

id780instance
type: InProceedings
type: Publication
author: id28instance
author: id31instance
author: id38instance
booktitle: Proc. of the European Simulation and Modelling Conference (ESMc2004)
month: October
pages: 252-256
title: Simulation of Business Process Improvement by a Customized Genetic Algorithm
year: 2004

id781instance
type: InProceedings
type: Publication
author: id28instance
author: id31instance
booktitle: Proc. of the International Conference on Advances in Intelligent Systems - Theory and Applications (AISTA 2004)
month: November
title: Adaptive Business Process Improvement Using Multi-Objective Genetic Algorithms
year: 2004

id782instance
type: InProceedings
type: Publication
author: id31instance
booktitle: Proc. of the International Conference of Operations Research 2000
month: May
title: Computergestützte Analyse der von Rommelfanger vorgeschlagenen Operatoren in unscharfen Netzplänen
year: 2000

id783instance
type: Publication
type: TechnicalReport
abstract: We present a novel approach to the automatic acquisition of taxonomies or concept hierarchies from a text corpus. The approach is based on Formal Concept Analysis (FCA), a method mainly used for the analysis of data, i.e. for investigating and processing explicitly given information. We follow Harris' distributional hypothesis and model the context of a certain term as a vector representing syntactic dependencies which are automatically acquired from the text corpus with a linguistic parser. On the basis of this context information, FCA produces a lattice that we convert into a special kind of partial order constituting a concept hierarchy. The approach is evaluated by comparing the resulting concept hierarchies with hand-crafted taxonomies for two domains: tourism and finance. We also directly compare our approach with hierarchical agglomerative clustering as well as with Bi-Section-KMeans as an instance of a divisive clustering algorithm. Furthermore, we investigate the impact of using different measures weighting the contribution of each attribute as well as of applying a particular smoothing technique to cope with data sparseness.
author: id14instance
author: id6instance
author: id98instance
has project: id35instance
is about: id71instance
month: November
title: Learning Concept Hierarchies from Text Corpora using Formal Concept Analysis
year: 2004

id784instance
type: InProceedings
type: Publication
author: id13instance
author: id2079instance
author: id6instance
author: id462instance
author: id463instance
author: id464instance
author: id465instance
author: id466instance
author: id473instance
booktitle: Proceedings of the European Workshop on the Integration of Knowledge, Semantics and Digital Media Technology (EWIMT)
has project: id44instance
is about: id105instance
is about: id153instance
is about: id53instance
is about: id69instance
is about: id70instance
month: November
title: Knowledge Representation for Semantic Multimedia Content Analysis and Reasoning
year: 2004

id785instance
type: InProceedings
type: Publication
abstract: Die kommerzielle Nutzung von UMTS steht in Deutschland kurz bevor, aber auch lizenzfreie Alternativen wie WLAN haben Marktreife erreicht und erfreuen sich wachsender Nutzerzahlen. UMTS fehlen derzeit nicht nur marktreife Endgeräte, sondern auch Ideen für Anwendungen, die diesen neuen Mobilfunkstandard für Endkunden attraktiv machen. Ortsbezogene Dienste (bzw. Location-based Services – LBS) könnten die Basis für neuartige Anwendungen mit der notwendigen Attraktivität darstellen. Im Rahmen der Notebook University Karlsruhe (NUKATH) wurde der Prototyp eines Ortsdienstes entwickelt, bei dem auf teure Lizenzen, spezielle neue Protokolle und neue Typen von Endgeräten verzichtet wird. Der Prototyp ermöglicht die Ortung mittels GPS (Global Positioning System), die Kommunikation über WLAN (IEEE 802.11) und die Benutzung von Notebooks, Tablet PCs oder – mit leichter Modifikation – auch anderer mobiler Geräte.
address: Berlin, Offenbach
author: id2081instance
author: id29instance
author: id87instance
booktitle: VDE Kongress 2004 - Innovationen für Menschen, ITG Fachtagung, Ambient Intelligence
month: October
pages: 65-70
title: Location-based Services: Konkurrenz durch lizenzfreie Alternativen
year: 2004

id786instance
type: Article
type: Publication
abstract: Formal concept analysis has grown from a new branch of the mathematical field of lattice theory to a widely recognized tool in Computer Science and elsewhere. In order to fully benefit from this theory, we believe that it can be enriched with notions such as approximation by computation or representability. The latter are commonly studied in denotational semantics and domain theory and captured most prominently by the notion of algebraicity, e.g. of lattices. In this paper, we explore the notion of algebraicity in formal concept analysis from a category-theoretical perspective. To this end, we build on the the notion of approximable concept with a suitable category and show that the latter is equivalent to the category of algebraic lattices. At the same time, the paper provides a relatively comprehensive account of the representation theory of algebraic lattices in the framework of Stone duality, relating well-known structures such as Scott information systems with further formalisms from logic, topology, domains and lattice theory.
author: id2084instance
author: id2107instance
author: id469instance
has project: id50instance
is about: id133instance
is about: id36instance
is about: id58instance
is about: id94instance
journal: Fundamenta Informaticae
month: July
number: 2-3
pages: 301-328
title: A categorical view on algebraic lattices in formal concept analysis
volume: 74
year: 2006

id787instance
type: InCollection
type: Publication
author: id2087instance
author: id483instance
booktitle: Data Warehouse Systeme - Architektur, Entwicklung, Anwendung
edition: 2. Auflage
is about: id11instance
pages: 426-431
title: Erfolgsfaktoren beim Aufbau eines Data-Warehouse-Systems
year: 2004

id788instance
type: InProceedings
type: Publication
abstract: This paper proposes an architecture and a model of Business Process Support (BPS) Systems for e-government organizational boundaries. Today, processes are mostly adapted to existing technologies; in contrast, the proposed architecture intends to support typical e-government processes. The proposed system consists of three main IT components: a workflow system for administration and control of information flows; Web Services enabling data transfer between computers; and a Web Server controlling all applications for communication with all users in each organization. The proposed model of the Workflow Enactment Server consists of two nodes: the Rule Base Collection, and the Workflow Engine. The workflow engine consists of two components A and B for process execution and control.
author: id38instance
author: id44instance
booktitle: Database and Expert Systems Applications, DEXA2004
is about: id106instance
month: September
number: P2195
pages: 1007-1115
title: A Model of Business Process Support System for E-Government
year: 2004

id789instance
type: InProceedings
type: Publication
abstract: This paper proposes a model of Business Process Support Systems crossing organizational boundaries. Such systems have to support interorganizational workflows which are mainly characterized by interoperability, autonomy and openess. Interoperability is enabled through Web Services, providing required functionalities of integration and flexibility, and by using applied ebXML as communication language. The proposed system consists of three main IT nodes: a workflow system for administration and control of information flows; Web Services enabling data transfer between computers; and a Web Server controlling all applications for communication with all users in each organization. The proposed model of the Workflow Enactment Server consists of two nodes: the Rule Based Collection, and the Workflow Engine. The Rule Based Collection consists of a set of rules mapping the requirements of the involved organizations. The workflow engine consists of two components A and B for process execution and control.
author: id44instance
booktitle: Proceedings CSIT' 2004
month: October
pages: 157-161
title: Model of an interorganizational Business Process Support System for public institutions
volume: 1
year: 2004

id78instance
type: Article
type: Publication
author: id6instance
author: id67instance
author: id68instance
author: id69instance
author: id70instance
author: id71instance
author: id72instance
author: id73instance
author: id74instance
author: id75instance
author: id76instance
is about: id15instance
is about: id49instance
journal: IEEE Intelligent Systems
month: May
note: Trends & Controversies
number: 3
pages: 66-80
title: Mining Information for Functional Genomics
volume: 17
year: 2002

id790instance
type: InProceedings
type: Publication
address: St. Louis, Missouri, USA
author: id2044instance
author: id38instance
booktitle: ACM/IEEE 27th International Conference on Software Engineering (ICSE2005)
is about: id100instance
is about: id20instance
is about: id85instance
month: May
title: Information Systems Development at the Virtual Global University: An Experience Report
year: 2005

id791instance
type: InProceedings
type: Publication
address: Tilburg, The Netherlands
author: id98instance
author: id110instance
booktitle: Proceedings of the 6th Workshop on Computational Semantics (IWCS)
is about: id111instance
month: January
title: Talking about trees, scope and concepts
year: 2005

id792instance
type: InProceedings
type: Publication
address: Hiroshima, Japan
author: id57instance
author: id484instance
author: id5instance
booktitle: Proceedings of the 3rd International Semantic Web Conference (ISWC 2004)
has project: id49instance
is about: id79instance
month: November
title: Query Answering for OWL-DL with Rules
year: 2004

id793instance
type: Publication
type: TechnicalReport
author: id20instance
author: id83instance
has project: id42instance
has project: id49instance
is about: id68instance
is about: id69instance
is about: id70instance
month: November
note: SEKT Deliverable D7.1.1.c
title: State of the Art in Ontology Engineering Methodologies
year: 2004

id794instance
type: InCollection
type: Publication
author: id6instance
author: id83instance
booktitle: Semantic Web and Peer-to-Peer
has project: id30instance
is about: id123instance
is about: id97instance
pages: 105--122
title: Semantic Query Routing in Unstructured Networks Using Social Metaphors
year: 2005

id795instance
type: InCollection
type: Publication
author: id2055instance
author: id20instance
author: id6instance
author: id83instance
booktitle: Semantic Web and Peer-to-Peer
has project: id30instance
is about: id123instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id98instance
pages: 301--320
title: Distributed Engineering of Ontologies (DILIGENT)
year: 2005

id796instance
type: InProceedings
type: Publication
address: Vienna, Austria
author: id2023instance
author: id6instance
author: id80instance
author: id83instance
author: id485instance
author: id486instance
author: id487instance
booktitle: Proceedings of the 5th International Conference on Practical Aspects of Knowledge Management (PAKM 2004)
has project: id30instance
has project: id55instance
is about: id123instance
is about: id68instance
is about: id79instance
month: December
title: XAROP: A Midterm Report in Introducing a Decentralized Semantics-based Knowledge Sharing Application
year: 2004

id797instance
type: InProceedings
type: Publication
author: id83instance
author: id488instance
booktitle: WM 2005: Professional Knowledge Management - Experiences and Visions, Contributions to the 3rd Conference Professional Knowledge Management - Experiences and Visions, April 10-13, 2005, Kaiserslautern, Germany
has project: id30instance
is about: id123instance
is about: id139instance
month: April
title: On Ranking Peers in Semantic Overlay Networks
year: 2005

id798instance
type: InProceedings
type: Publication
abstract: Im Rahmen des BMBF-Projektes "Notebook University" beschäftigte sich das Teilprojekt "Anwendungen mobiler Systeme im Umfeld universitären Lebens und Arbeitens" (AMSULA) der Notebook Universität Karlsruhe (NUKATH) mit der Frage, welche neuen Möglichkeiten sich durch die Verfügbarkeit verschiedener Arten von Funknetzen und mobiler Endgeräte für Studierende und Universitätsangehörige bieten. Dabei wurden in erster Linie Möglichkeiten zur Bereicherung der Lehre durch mobile Szenarien erforscht; gleichzeitig wurden jedoch auch Einsatzmöglichkeiten mobiler Technik im Umfeld der Universität berücksichtigt.
author: id2008instance
author: id29instance
author: id87instance
booktitle: DeLFI 2004: Die 2. e-Learning Fachtagung Informatik
has project: id29instance
is about: id20instance
month: September
pages: 371-372
title: Mobiles Lernen an der Notebook Universität Karlsruhe
year: 2004

id799instance
type: Proceedings
type: Publication
editor: id14instance
editor: id17instance
editor: id489instance
editor: id490instance
is about: id134instance
is about: id79instance
month: September
title: Semantic Web Personalization
year: 2004

id79instance
type: Article
type: Publication
author: id6instance
journal: Künstliche Intelligenz
number: 1
pages: 38-39
title: Knowledge Portals
volume: 16
year: 2002

id7instance
type: InCollection
type: Publication
abstract: This paper describes a principled approach towards creating an IT-support environment for knowledge workers. Starting in the analysis phase our approach paves the way for putting an intelligent assistant to work within a typical business process environment. Thereby, this support intelligence is centred around the interdependencies between documents providing the background knowledge and business processes.
author: id60instance
author: id6instance
booktitle: Knowledge Management and Organizational Memories
has project: id11instance
is about: id102instance
is about: id104instance
is about: id12instance
is about: id17instance
is about: id1instance
is about: id68instance
title: Knowledge and Business Processes: Approaching an Integration
year: 2002

id801instance
type: Publication
type: TechnicalReport
author: id13instance
author: id2079instance
author: id6instance
author: id462instance
author: id464instance
author: id465instance
author: id466instance
author: id473instance
has project: id44instance
is about: id105instance
is about: id153instance
is about: id53instance
is about: id69instance
is about: id70instance
is about: id81instance
month: June
title: ID4.1 Specification of Semantic Structures for Knowledge Representation
type: aceMedia Internal Deliverable
year: 2004

id802instance
type: Publication
type: TechnicalReport
author: id13instance
author: id2079instance
author: id6instance
author: id462instance
author: id465instance
author: id466instance
author: id473instance
author: id491instance
author: id492instance
author: id493instance
author: id494instance
has project: id44instance
is about: id105instance
is about: id153instance
is about: id53instance
is about: id69instance
is about: id70instance
is about: id81instance
month: September
title: D4.1 Report on aceMedia Semantic Structures and Application Domain Ontologies
type: aceMedia External Deliverable
year: 2004

id804instance
type: InProceedings
type: Publication
abstract: Assigning semantics to logic programs via selector generated models (Schwarz 2002/2003) extends several semantics, like the stable, the inflationary, and the stable generated semantics, to programs with arbitrary formulae in rule heads and bodies. We study this approach by means of a unifying framework for characterizing different logic programming semantics using level mappings (Hitzler and Wendt 2005, Hitzler 2003), thereby supporting the claim that this framework is very flexible and applicable to very diversely defined semantics.
author: id2084instance
author: id498instance
booktitle: 19th Workshop on (Constraint) Logic Programming, Ulm, Germany, February 2005
has project: id43instance
has project: id50instance
is about: id129instance
is about: id130instance
month: February
pages: 65-75
series: Ulmer Informatik-Berichte
title: Level mapping characterizations of selector-generated models for logic programs
volume: 2005-01
year: 2005

id805instance
type: Article
type: Publication
abstract: Part of the theory of logic programming and nonmonotonic reasoning concerns the study of fixed-point semantics for these paradigms. Several different semantics have been proposed during the last two decades, and some have been more successful and acknowledged than others. The rationales behind those various semantics have been manifold, depending on one's point of view, which may be that of a programmer or inspired by commonsense reasoning, and consequently the constructions which lead to these semantics are technically very diverse, and the exact relationships between them have not yet been fully understood. In this paper, we present a conceptually new method, based on level mappings, which allows to provide uniform characterizations of different semantics for logic programs. We will display our approach by giving new and uniform characterizations of some of the major semantics, more particular of the least model semantics for definite programs, of the Fitting semantics, and of the well-founded semantics. A novel characterization of the weakly perfect model semantics will also be provided.
author: id2084instance
author: id499instance
is about: id129instance
is about: id130instance
journal: Theory and Practice of Logic Programming
number: 1-2
pages: 123-159
title: A uniform approach to logic programming semantics
volume: 5
year: 2005

id806instance
type: Proceedings
type: Publication
editor: id2062instance
editor: id38instance
has project: id57instance
is about: id20instance
month: April
series: CEPIS Workshop Proceedings eChallenges, 22 October 2003, Bologna, Italy
title: eEurope - IT Skills: Challenging Europe
volume: 2003
year: 2004

id807instance
type: InProceedings
type: Publication
author: id2062instance
author: id500instance
booktitle: Building the Knowledge Economy: Issues, Applications, Case Studies
is about: id20instance
pages: 1590-1597
series: eChallenges
title: EPICS - market validation for pan-European Certification of Informatics Professionals
volume: 2003
year: 2004

id808instance
type: InCollection
type: Publication
address: Wiesbaden
author: id2062instance
author: id501instance
booktitle: Praxis des Customer Relationship Management: Branchenlösungen und Erfahrungsberichte
edition: 2. Auflage
is about: id98instance
month: February
pages: 171-184
title: Kundenmanagement in virtuellen Organisationen
year: 2004

id80instance
type: InProceedings
type: Publication
author: id6instance
author: id30instance
booktitle: Proceedings of the 10th International Conference on Information Technology and Travel & Tourism, ENTER 2003, Helsinki, Finland, 29th-31st January 2003
is about: id100instance
is about: id79instance
is about: id80instance
title: Services on the Move - Towards P2P-Enabled Semantic Web Services
year: 2003

id810instance
type: InProceedings
type: Publication
author: id14instance
author: id2079instance
booktitle: Proceedings of the Workshop on Mining for and from the Semantic Web at the 10th ACM SIGKDD Conference on Knowledge Discovery and Data Mining (KDD 2004)
has project: id44instance
is about: id134instance
is about: id93instance
month: August
note: Joint Session with WebKDD workshop. Reprinted in Proceedings of WebKDD 2004, LNCS 3932, Springer.
pages: 70-87
title: Boosting for Text Classification with Semantic Features
year: 2004

id812instance
type: InProceedings
type: Publication
author: id14instance
author: id2079instance
booktitle: Proceedings of the 4th IEEE International Conference on Data Mining (ICDM 2004), 1-4 November 2004, Brighton, UK
has project: id44instance
is about: id134instance
is about: id93instance
month: November
pages: 331-334
title: Text Classification by Boosting Weak Learners based on Terms and Concepts
year: 2004

id814instance
type: Publication
type: TechnicalReport
author: id2079instance
author: id6instance
author: id462instance
author: id466instance
author: id496instance
author: id497instance
has project: id44instance
is about: id153instance
is about: id53instance
is about: id69instance
is about: id70instance
month: September
title: D4.5 Specification of Formal Models and Structures for Context Representation
type: aceMedia External Deliverable
year: 2004

id815instance
type: InProceedings
type: Publication
author: id14instance
author: id2079instance
booktitle: Proceedings of the Workshop on Text-Based Information Retrieval (TIR-04) at the 27th German Conference on Artificial Intelligence (KI 2004), Ulm, Germany
has project: id44instance
is about: id134instance
is about: id93instance
month: September
note: REPRINT
title: Boosting for Text Classification with Semantic Features
year: 2004

id816instance
type: InProceedings
type: Publication
abstract: In this paper we present an ontology based approach for dynamic integration of business partners on demand. ODAMY, an ontology-based methodology, is proposed allowing flexible partner integration on demand into existing or evolving dynamic business networks. The approach chosen takes focus on the “softer” but important strategic aspects to measure the strategic fit to discover and select business partners. It provides required mechanisms and methods to support trust building by supporting communication and increases transparency within the network. Network companies are represented by a kind of “fingerprint” describing their co-operation ability and requirements. First, the paper introduces into the scenario of dynamic business ecosystems. Then developments, trends and requirements of existing b2b integration concepts are discussed. ODAMY is described and the implementation is depicted to demonstrate how the methodology is put into practice.
address: Toulouse, France
author: id2062instance
author: id38instance
booktitle: Virtual Enterprises and Collaborative Networks
has project: id53instance
is about: id98instance
month: August
number: 18
pages: 43-50
title: ODAMY Extending b2b Integration Technology Architecture
year: 2004

id817instance
type: Publication
type: TechnicalReport
abstract: This deliverable provides the first set of guidelines for ontology engineering and application in SEKT: DILIGENT -- DIstributed, Loosely-controlled and evolvInG Engineering of oNTologies. It consists of several main building blocks: (i) a survey of relevant existing approaches, (ii) the DILIGENT process model and argumentation framework and (iii) first results from applying DILIGENT in the SEKT case studies. The DILIGENT process has already been evaluated in an in-situ experiment at the Institute AIFB, the argumentation framework is based on a thorough ex-post analysis in the biology domain.
author: id2055instance
author: id2097instance
author: id20instance
author: id83instance
has project: id42instance
has project: id49instance
is about: id68instance
is about: id69instance
is about: id70instance
month: December
series: 7.1.1
title: SEKT Methodology: Initial Guidelines
type: SEKT formal deliverable
year: 2004

id818instance
type: Publication
type: TechnicalReport
author: id2023instance
author: id2097instance
author: id20instance
has project: id42instance
has project: id49instance
is about: id68instance
month: December
series: D3.1.1
title: Ontology Management and Evolution -- Survey, Methods and Prototype
type: SEKT formal deliverable
year: 2004

id819instance
type: Article
type: Publication
author: id2048instance
author: id2instance
author: id33instance
author: id508instance
author: id509instance
journal: Zeitschrift für das gesamte Kreditwesen
month: November
number: 22
title: Einsatz des Libor-Marktmodells in der Zinsänderungsrisikosteuerung
year: 2004

id820instance
type: InProceedings
type: Publication
author: id2048instance
author: id2instance
author: id33instance
booktitle: Evolutionary Multi-Criterion Optimization
is about: id78instance
month: March
pages: 692-706
series: Lecture Notes in Computer Science
title: A Multi-objective Approach to Integrated Risk Management
volume: 3410
year: 2005

id821instance
type: InProceedings
type: Publication
address: Augsburg
author: id12instance
author: id2039instance
author: id2042instance
booktitle: Proceedings zur 5. Konferenz Mobile Commerce Technologien und Anwendungen (MCTA 2005)
month: February
pages: 87-100
title: Anonymity by Design - Eine Architektur zur Gewährleistung von Kundenschutz im mobilen Marketing
year: 2005

id822instance
type: Publication
type: TechnicalReport
author: id80instance
author: id510instance
author: id511instance
author: id512instance
has project: id42instance
has project: id49instance
is about: id79instance
month: July
series: 4.2.1
title: State-of-the-art survey on Ontology Merging and Aligning V1
type: SEKT Deliverable
year: 2004

id823instance
type: InProceedings
type: Publication
address: Boston, MA
author: id76instance
booktitle: Proc. 1st International Workshop on Peer-to-Peer Knowledge Management
is about: id139instance
month: August
title: Self-organization of a Small World by Topic
year: 2005

id824instance
type: InProceedings
type: Publication
address: New York City
author: id51instance
author: id76instance
author: id8instance
booktitle: Proc. 13th International World Wide Web Conference (WWW 2004) (Alternate Track Papers & Posters)
has project: id27instance
is about: id20instance
month: May
title: Semantic Resource Management for the Web: An ELearning Application
year: 2004

id825instance
type: InProceedings
type: Publication
address: Boston, MA
author: id76instance
booktitle: Proc. 1st International Workshop on Peer-to-Peer Knowledge Management
month: August
series: CEUR Workshop Proceedings
title: Self-organization of a Small World by Topic
volume: 108
year: 2004

id829instance
type: InProceedings
type: Publication
address: Lisbon, Portugal
author: id2064instance
author: id38instance
booktitle: Proceedings of the IADIS International Conference e-commerce 2004
is about: id19instance
is about: id24instance
month: December
pages: 47-55
title: A Step Towards an Integrated Product Information Management
year: 2004

id82instance
type: InProceedings
type: Publication
author: id2instance
author: id33instance
booktitle: Tackling industrial complexity: the ideas that make a difference, Proceedings of the 2002 Conference of the Manufacturing Complexity Network, April 9-10 2002, University of Cambridge
has project: id13instance
is about: id54instance
pages: 193-207
title: Large grids and local information flow as a reason for high complexity
year: 2002

id830instance
type: Article
type: Publication
author: id6instance
author: id98instance
has project: id35instance
is about: id51instance
journal: SIGKDD Explorations
month: December
number: 2
pages: 24-34
title: Learning by Googling
volume: 6
year: 2004

id831instance
type: Article
type: Publication
author: id28instance
author: id514instance
has project: id15instance
is about: id43instance
journal: Numerical Algorithms
month: December
number: 37
pages: 391-399
title: A Multidimensional Branch-and-Prune Method for Interval Global Optimization
year: 2004

id832instance
type: Article
type: Publication
abstract: The international workshop on Mining for and from the Semantic Web (MSW) at the KDD 2004 successfully brought together people from the communities Semantic Web and Knowledge Discovery. The goal of the workshop was to strengthen the communication and interaction between these communities as there is currently an agreement that both can benefit largely from each other. Overall the contributions and discussions showed that today mining for the semantic web is the primarily targeted research area. However, with a growing amount of available semantic web data also mining from the semantic web will be more prominent.
author: id14instance
author: id20instance
author: id388instance
has project: id42instance
has project: id43instance
has project: id49instance
is about: id15instance
is about: id79instance
is about: id93instance
journal: ACM SIGKDD Explorations
month: December
number: 2
pages: 142-143
title: A Workshop Report: Mining for and from the Semantic Web at KDD 2004
volume: 6
year: 2004

id833instance
type: Publication
type: TechnicalReport
author: id80instance
author: id386instance
has project: id43instance
is about: id79instance
month: August
series: 2.2.3
title: State fo the art on ontology alignment
type: Knowledge Web Deliverable
year: 2004

id834instance
type: InProceedings
type: Publication
author: id1954instance
author: id2070instance
author: id515instance
booktitle: Elektronische Geschäftsprozesse [Grundlagen - Sicherheitsaspekte - Realisierungen - Anwendungen]
month: September
pages: 55-63
title: Teamarbeit in virtuellen Organisationen
year: 2001

id835instance
type: InProceedings
type: Publication
address: San Diego, California, USA
author: id2041instance
author: id516instance
booktitle: Managing Modern Organizations with Information Technology
is about: id59instance
month: May
title: Economic Efficiency of Mobile Terminals in Hospitals
year: 2005

id836instance
type: InProceedings
type: Publication
abstract: We present a new kind of heuristic guidance as an extension to the Population-based Ant Colony Optimization (P-ACO) implemented in hardware on a Field Programmable Gate Array (FPGA). The heuristic information is obtained by transforming standard heuristic information into small time-scattered heuristic-vectors of favourable ant decisions. This approach is suited for heuristics which allow for an a priori calculation of the heuristics information. Using the proposed method, an ant can build-up a solution in quasi-linear time. Experimental studies measure the performance of the time-scattered heuristic. A comparison with the standard heuristic and candidate lists is also given.
author: id19instance
author: id29instance
author: id3instance
author: id33instance
booktitle: Ant colony Optimization and Swarm Intelligence. Proc. of the ANTS 2004 conference
has project: id41instance
is about: id5instance
is about: id75instance
is about: id76instance
is about: id77instance
month: September
pages: 250-261
series: LNCS
title: Time-Scattered Heuristic for the Hardware Implementation of Population-based ACO
volume: 3172
year: 2004

id837instance
type: Proceedings
type: Publication
editor: id15instance
editor: id517instance
editor: id518instance
editor: id519instance
editor: id520instance
editor: id521instance
editor: id522instance
editor: id523instance
editor: id524instance
editor: id525instance
editor: id526instance
editor: id527instance
month: April
series: LNCS
title: Applications of Evolutinary Computing
volume: 3005
year: 2004

id838instance
type: Article
type: Publication
author: id29instance
author: id3instance
author: id48instance
author: id34instance
author: id37instance
has project: id41instance
is about: id30instance
is about: id75instance
is about: id76instance
is about: id77instance
journal: IEE Proceedings - Computers and Digital Techniques, special issue on reconfigurable systems
month: May
number: 3
pages: 181-188
title: Dynamic Scheduling on Partially Reconfigurable FPGAs
volume: 147
year: 2000

id839instance
type: InProceedings
type: Publication
author: id29instance
author: id3instance
author: id48instance
author: id37instance
booktitle: Field-Programmable Logic and Applications
has project: id41instance
is about: id30instance
is about: id75instance
is about: id76instance
is about: id77instance
month: August
pages: 379-388
series: LNCS
title: Task Rearrangement on Partially Reconfigurable FPGAs with Restricted Buffer
volume: 1896
year: 2000

id83instance
type: InProceedings
type: Publication
abstract: Distributed knowledge management systems (DKMS) have been suggested to meet the requirements of today's knowledge management. Peer-to-peer systems offer technical foundations for such distributed systems. To estimate the value of P2P-based knowledge management evaluation criteria that measure the performance of such DKMS are required. We suggest a concise framework for evaluation of such systems within different usage scenarios. Our approach is based on standard measures from the information retrieval and the databases community. These measures serve as input to a general evaluation function which is used to measure the efficiency of P2P-based KM systems. We describe test scenarios as well as the simulation software and data sets that can be used for that purpose.
author: id51instance
author: id6instance
author: id76instance
author: id80instance
author: id83instance
booktitle: Agent-mediated Knowledge Management - AMKM-2003, AAAI Spring Symposium 2003, Stanford, March 24-26
has project: id30instance
is about: id104instance
is about: id123instance
is about: id139instance
is about: id1instance
is about: id55instance
is about: id68instance
is about: id80instance
pages: 73-88
title: Towards Evaluation of Peer-to-Peer-based Distributed Information Management Systems
year: 2003

id840instance
type: InProceedings
type: Publication
author: id19instance
author: id29instance
author: id3instance
author: id33instance
author: id34instance
author: id36instance
author: id37instance
booktitle: Proceedings of the IEEE International Conference on Field-Programmable Technology (FPT)
has project: id41instance
is about: id5instance
is about: id75instance
is about: id76instance
is about: id77instance
month: December
pages: 125-133
title: Population Based Ant Colony Optimization on FPGA
year: 2002

id841instance
type: InProceedings
type: Publication
author: id3instance
author: id33instance
booktitle: Applications of Evolutionary Computing. Proceedings of the EvoHOT Workshop
has project: id41instance
has project: id9instance
is about: id5instance
is about: id77instance
month: March
pages: 235-244
series: LNCS
title: Counter-based Ant Colony Optimization as a Hardware-oriented Meta-Heuristic
volume: 3449
year: 2005

id842instance
type: InProceedings
type: Publication
author: id19instance
author: id29instance
author: id3instance
author: id33instance
author: id34instance
author: id36instance
author: id37instance
booktitle: Online Proceedings of the Dagstuhl Seminar, Dynamically Reconfigurable Architectures
has project: id41instance
is about: id33instance
is about: id5instance
is about: id75instance
is about: id76instance
is about: id77instance
month: July
title: FPGA Implementation of Population based Ant Colony Optimization
volume: 03301
year: 2003

id843instance
type: InCollection
type: Publication
abstract: Many real-world optimization problems involve multiple, typically conflicting objectives. Often, it is very difficult to weigh the different criteria exactly before alternatives are known. Evolutionary multi-objective optimization usually solves this predicament by searching for the whole Pareto-optimal front of solutions. However, often the user has at least a vague idea about what kind of solutions might be preferred. In this chapter, we argue that such knowledge should be used to focus the search on the most interesting (from a user's perspective) areas of the Pareto-optimal front. To this end, we present and compare two methods which allow to integrate vague user preferences into evolutionary multi-objective algorithms. As we show, such methods may speed up the search and yield a more fine-grained selection of alternatives in the most relevant parts of the Pareto-optimal front.
author: id15instance
author: id528instance
booktitle: Knowledge Incorporation in Evolutionary Computation
is about: id30instance
is about: id63instance
month: October
pages: 461-478
title: Integrating user preferences into evolutionary multi-objective optimization
year: 2004

id845instance
type: Publication
type: TechnicalReport
abstract: Definition of a common framework for characterizing alignment of heterogeneous information. This report describes various approaches towards this goal and shows the relations between them. It also provides a description of the alignment sructure and process.
author: id2084instance
author: id20instance
author: id2107instance
author: id80instance
author: id386instance
author: id533instance
author: id534instance
author: id535instance
author: id536instance
author: id537instance
has project: id43instance
is about: id70instance
is about: id79instance
month: December
series: 2.2.1v2
title: Specification of a common framework for characterizing alignment
type: Knowledge Web Deliverable
year: 2004

id846instance
type: Misc
type: Publication
author: id2084instance
howpublished: Habilitationsschrift (kumulativ)
is about: id129instance
is about: id130instance
is about: id131instance
is about: id132instance
is about: id133instance
is about: id36instance
is about: id53instance
is about: id55instance
is about: id58instance
is about: id62instance
is about: id79instance
is about: id94instance
month: December
note: Fakultät Informatik, Technische Universität Dresden
title: Nichtmonotone, neuro-symbolische und begriffliche Wissensverarbeitung
year: 2004

id847instance
type: Article
type: Publication
author: id2instance
author: id538instance
author: id539instance
author: id540instance
author: id541instance
author: id542instance
has project: id2instance
is about: id145instance
journal: Journal for Statistical Software
number: Issue 2
pages: 1 - 26
title: Algorithms for spectral analysis of irregularly sampled time series
volume: Volume 11
year: 2004

id849instance
type: Article
type: Publication
author: id2044instance
author: id157instance
is about: id101instance
is about: id106instance
is about: id20instance
is about: id56instance
is about: id57instance
is about: id85instance
journal: International Journal of Knowledge and Learning (IJKL)
number: 3
pages: 229-248
title: Reengineering of Educational Material: A Systematic Approach
volume: 1
year: 2005

id84instance
type: InCollection
type: Publication
abstract: Most research in evolutionary computation focuses on optimization of static, non-changing problems. Many real-world optimization problems, however, are dynamic, and optimization methods are needed that are capable of continuously adapting the solution to a changing environment. If the optimization problem is dynamic, the goal is no longer to find the extrema, but to track their progression through the space as closely as possible. In this chapter, we suggest a classification of dynamic optimization problems, and survey and classify a number of the most widespread techniques that have been published in the literature so far to make evolutionary algorithms suitable for changing optimization problems. After this introduction to the basics, we will discuss in more detail two specific approaches, pointing out their deficiencies and potential. The first approach is based on memorization, the other one is uses a novel multi-population structure.
author: id15instance
author: id29instance
booktitle: Theory and Application of Evolutionary Computation: Recent Trends
is about: id31instance
pages: 239-262
title: Designing evolutionary algorithms for dynamic optimization problems
year: 2002

id850instance
type: Article
type: Publication
author: id2instance
author: id33instance
has project: id2instance
is about: id13instance
journal: Computational Statistics Data Analysis
pages: 373 - 399
title: A hybrid heuristic approach to discrete multi-objective optimization of credit portfolios
volume: 47
year: 2004

id851instance
type: InProceedings
type: Publication
author: id2instance
author: id543instance
booktitle: Parameterized and Exact Computation, First International Workshop, IWPEC 2004, Bergen, Norway, September 14 - 17, 2004, Proceedings
has project: id13instance
is about: id145instance
pages: 96 - 107
title: On decidability of MSO theories of representable matroids
year: 2004

id852instance
type: InProceedings
type: Publication
author: id2instance
author: id33instance
booktitle: Innovations in Classification, Data Science, and Information Systems. Proc. 27th. Annual GfKI Conference, University of cottbus, March 12 - 14, 2003
has project: id2instance
is about: id13instance
pages: 506 - 514
title: Discovery of risk-return efficient structures in middle-market portfolios
year: 2004

id853instance
type: InCollection
type: Publication
author: id2instance
author: id33instance
booktitle: Applications of Multi-Objective Evolutionary Algorithms
has project: id2instance
is about: id13instance
pages: 627 - 652
title: Financial applications of multi-objective evolutionary algorithms: recent development and future research directions
year: 2004

id854instance
type: Article
type: Publication
author: id2instance
author: id36instance
author: id544instance
author: id545instance
journal: Engineering of Intelligent Systems
title: EASE – a software agent that extracts financial data from the SEC’s EDGAR database
year: 2004

id855instance
type: InProceedings
type: Publication
author: id15instance
author: id72instance
booktitle: Parallel Problem Solving from Nature
is about: id154instance
month: September
pages: 202-211
series: LNCS
title: Sequential sampling in noisy environments
volume: 3242
year: 2004

id856instance
type: InProceedings
type: Publication
author: id15instance
author: id2038instance
author: id546instance
author: id547instance
booktitle: Parallel Problem Solving from Nature
is about: id30instance
is about: id63instance
month: December
pages: 722-731
series: LNCS
title: Finding knees in multi-objective optimization
volume: 3242
year: 2004

id857instance
type: InProceedings
type: Publication
author: id15instance
author: id548instance
author: id549instance
booktitle: Genetic and Evolutionary Computation Conference
pages: 434-446
series: LNCS
title: Evolving caching strategies for the internet
volume: 3103
year: 2004

id858instance
type: InProceedings
type: Publication
author: id15instance
author: id2045instance
author: id29instance
booktitle: Genetic and Evolutionary Computation Conference
is about: id30instance
is about: id73instance
pages: 923-934
series: LNCS
title: Distribution of Evolutionary Algorithms in Heterogeneous Networks
volume: 3102
year: 2004

id859instance
type: InProceedings
type: Publication
author: id15instance
author: id550instance
author: id551instance
booktitle: Workshop on Efficient and Experimental Algorithms
is about: id155instance
pages: 570-583
series: LNCS
title: A heuristic for minimum-width graph layering with consideration of dummy nodes
volume: 3059
year: 2004

id85instance
type: Article
type: Publication
author: id15instance
author: id29instance
author: id72instance
author: id78instance
is about: id30instance
journal: Industrie Management
number: 6
pages: 37-40
title: Evolutionäre Algorithmen zur Standortplanung
volume: 18
year: 2002

id860instance
type: InProceedings
type: Publication
author: id15instance
author: id553instance
booktitle: Applications of Evolutionary Computing
is about: id31instance
is about: id65instance
pages: 489-500
series: LNCS
title: Multi-swarm optimization in dynamic environments
volume: 3005
year: 2004

id861instance
type: InProceedings
type: Publication
author: id15instance
author: id2038instance
author: id29instance
author: id552instance
booktitle: Congress on Evolutionary Computation
is about: id30instance
is about: id73instance
month: June
pages: 1952-1957
title: Parallelizing multi-objective evolutionary algorithms: cone separation
volume: 2
year: 2004

id862instance
type: Article
type: Publication
author: id15instance
author: id72instance
is about: id30instance
journal: Soft Computing
month: January
number: 1
pages: 13-20
title: Faster convergence by means of fitness estimation
volume: 9
year: 2005

id863instance
type: Article
type: Publication
author: id15instance
author: id19instance
is about: id154instance
is about: id5instance
journal: Mathematical Modelling and Algorithms
number: 4
pages: 403-425
title: Solving the Probabilistic TSP with Ant Colony Optimization
volume: 3
year: 2004

id864instance
type: InProceedings
type: Publication
abstract: The Semantic Web aims to provide access to information for humans and machines. Practical implementations of Semantic Web technologies need to consider aspects such as scalability and reliability to be attractive for industrial practitioners. Our approach shows a portal infrastructure which benefits on the one hand from the access facilities provided by Semantic Web technologies and on the other hand from the applicability of current Web technologies for industrial strength applications. The main achievement of the approach is an up-and-running network of content-interchanging portals. Accompanying tools and methods are provided for setting up such networks from scratch or to put them on top of existing information sources. In the paper, special attention is given to the ontology-supported query refinement service that enables a user to find the relevant results even if his query does not match his information need ideally.
author: id2040instance
author: id32instance
author: id57instance
author: id90instance
booktitle: From Integrated Publication and Information Systems to Virtual Information and Knowledge Environments
has project: id32instance
is about: id107instance
is about: id134instance
is about: id52instance
is about: id68instance
is about: id71instance
is about: id79instance
month: January
pages: 41-50
series: Lecture Notes in Computer Science
title: Ontology-Based Query Refinement for Semantic Portals
volume: 3379 / 2005
year: 2005

id865instance
type: InProceedings
type: Publication
abstract: Bibster is a semantics-based Peer-to-Peer system for exchanging bibliographic data among researchers. Bibster exploits ontologies in data storage, query formulation, query routing and answer presentation. While the original Bibster system assumed a globally shared domain ontology, we here describe extensions to the Bibster system, that allow to learn personalized ontologies from the local bibliographic metadata. These personal ontologies can not only be used for subsequently classifying the bibliographic metadata, but also for supporting an improved query refinement process.
author: id2023instance
author: id2053instance
author: id20instance
author: id32instance
booktitle: Proceedings of the BTW-Workshop "WebDB Meets IR"
has project: id42instance
has project: id49instance
has project: id55instance
is about: id102instance
is about: id104instance
is about: id123instance
is about: id49instance
is about: id68instance
is about: id70instance
is about: id71instance
is about: id79instance
title: On Personalized Information Retrieval in Semantics-Based Peer-to-Peer Systems
year: 2005

id866instance
type: InCollection
type: Publication
abstract: Knowledge management solutions relying on central repositories sometime have not met expectations, since users often create knowledge ad-hoc using their individual vocabulary and using their own decentral IT infrastructure (e.g., their laptop). To improve knowledge management for such decentralized and individualized knowledge work, it is necessary to, first, provide a corresponding IT infrastructure and to, second, deal with the harmonization of different vocabularies/ontologies. In this paper, we briefly sketch the technical peer-to-peer platform that we have built, but then we focus on the harmonization of the participating ontologies. Thereby, the objective of this harmonization is to avoid the worst incongruencies by having users share a core ontology that they can expand for local use at their will and individual needs. The task that then needs to be solved is one of distributed, loosely-controlled and evolving engineering of ontologies. In this paper we present a corresponding process template and a case study.
author: id2055instance
author: id20instance
author: id6instance
author: id83instance
booktitle: Intelligent Learning Infrastructures for Knowledge Intensive Organisations: A Semantic Web Perspective
chapter: 14
has project: id42instance
has project: id49instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
pages: 357--368
title: A caste study in supporting DIstributed, Loosely-controlled and evolvInG Engineering of oNTologies (DILIGENT)
year: 2005

id867instance
type: InProceedings
type: Publication
abstract: Abstract. Recent work has shown improvements in text clustering and classification tasks by integrating conceptual features extracted from ontologies. In this paper we present text mining experiments in the medical domain in which the ontological structures used are acquired automatically in an unsupervised learning process from the text corpus in question. We compare results obtained using the automatically learned ontologies with those obtained using manually engineered ones. Our results show that both types of ontologies improve results on text clus- tering and classification tasks, whereby the automatically acquired ontologies yield an improvement competitive with the manually engineered ones.
author: id14instance
author: id2079instance
author: id98instance
booktitle: From Data and Information Analysis to Knowledge Engineering: Proceedings of the 29th Annual Conference of the German Classification Society (GfKl 2005), Magdeburg, Germany, March 9-11, 2005
has project: id42instance
has project: id50instance
is about: id71instance
is about: id93instance
month: February
pages: 334-341
series: Studies in Classification, Data Analysis, and Knowledge Organization
title: Learning Ontologies to Improve Text Clustering and Classification
volume: 30
year: 2006

id868instance
type: Article
type: Publication
abstract: Turning the current Web into a Semantic Web requires automatic approaches for annotation of existing data since manual approaches will not scale in general. We here present an approach for automatic generation of F-Logic frames out of tables which subsequently supports the automatic population of ontologies from table-like structures. The approach consists of a methodology, an accompanying implementation and a thorough evaluation. It is based on a grounded cognitive table model which is stepwise instantiated by our methodology.
author: id2056instance
author: id20instance
author: id98instance
has project: id35instance
has project: id50instance
is about: id137instance
is about: id49instance
is about: id71instance
is about: id79instance
is about: id80instance
is about: id81instance
journal: Journal of Web Semantics: Science, Services and Agents on the World Wide Web
month: October
note: Selected Papers from the International Semantic Web Conference (ISWC) 2004, Hiroshima, Japan, 07-11 November 2004
number: 2-3
pages: 132-146
title: From Tables to Frames
volume: 3
year: 2005

id869instance
type: InProceedings
type: Publication
author: id98instance
author: id183instance
author: id224instance
author: id31instance
author: id555instance
author: id558instance
author: id559instance
booktitle: Proceedings of the EKAW Workshop on the Application of Language and Semantic Technologies to support Knowledge Management Processes, at the 14th International Conference on Knowledge Engineering and Knowledge Management
has project: id35instance
is about: id102instance
is about: id49instance
is about: id71instance
month: October
title: Integrating Information Extraction, Ontology Learning and Semantic Browsing into Organizational Knowledge Processes
year: 2004

id86instance
type: InCollection
type: Publication
author: id13instance
author: id50instance
author: id6instance
booktitle: The Emerging Semantic Web
has project: id23instance
is about: id81instance
title: CREAting relational Metadata (CREAM) -- a framework for semantic annotation
year: 2002

id870instance
type: Article
type: Publication
author: id2065instance
author: id6instance
author: id79instance
has project: id28instance
has project: id50instance
is about: id119instance
is about: id135instance
is about: id79instance
journal: IEEE Distributed Systems Online
month: February
title: Towards Semantic Middleware for Web Application Development
year: 2005

id871instance
type: Article
type: Publication
author: id12instance
has project: id34instance
is about: id59instance
journal: Karlsruher Transfer
month: October
number: 30
pages: 32-34
title: Mobile Business, oder: Wie macht man Mobiles zum Business
year: 2004

id872instance
type: Article
type: Publication
abstract: In [Hitzler and Wendt 2002, 2005], a new methodology has been proposed which allows to derive uniform characterizations of different declarative semantic for logic programs with negation. One result from this work is that the well-founded semantics can formally be understood as a stratified version of the Fitting (or Kripke-Kleene) semantics. The constructions leading to this result, however, show a certain asymmetry which is not readily understood. We will study this situation here with the result that we will obtain a coherent picture of relations between different semantics for normal logic programs.
author: id2084instance
has project: id43instance
has project: id50instance
is about: id129instance
is about: id130instance
journal: Journal of Logic and Computation
month: May
number: 3
pages: 391-404
title: Towards a Systematic Account of Different Semantics for Logic Programs
volume: 15
year: 2005

id873instance
type: Proceedings
type: Publication
author: id13instance
author: id6instance
author: id8instance
author: id98instance
author: id183instance
author: id223instance
author: id31instance
author: id557instance
author: id558instance
author: id559instance
author: id562instance
author: id563instance
author: id564instance
author: id565instance
author: id567instance
author: id568instance
author: id569instance
has project: id35instance
month: March
note: Dot.Kom Deliverable D2-1
title: Requirements for IE-based KM
year: 2003

id874instance
type: InProceedings
type: Publication
author: id13instance
author: id6instance
author: id98instance
author: id183instance
author: id223instance
author: id31instance
author: id557instance
author: id559instance
author: id562instance
author: id563instance
author: id564instance
author: id565instance
author: id566instance
author: id567instance
author: id568instance
author: id569instance
has project: id35instance
month: March
note: Dot.Kom Deliverable D2-2
title: IE-based KM Tools
year: 2003

id875instance
type: InProceedings
type: Publication
author: id13instance
author: id98instance
author: id223instance
author: id558instance
author: id570instance
author: id571instance
has project: id35instance
month: March
note: Dot.Kom Deliverable D2-3
title: KM Evaluation Strategy
year: 2003

id876instance
type: InProceedings
type: Publication
author: id13instance
author: id98instance
author: id225instance
author: id31instance
author: id554instance
author: id557instance
author: id572instance
author: id573instance
author: id574instance
has project: id35instance
month: March
note: Dot.Kom Deliverable D3-1
title: Requirements for IE
year: 2003

id877instance
type: InProceedings
type: Publication
author: id98instance
author: id225instance
author: id31instance
author: id554instance
author: id557instance
author: id563instance
author: id573instance
author: id574instance
author: id575instance
author: id576instance
author: id577instance
has project: id35instance
note: Dot.Kom Deliverable D3-2
title: Information Extraction Tools
year: 2005

id878instance
type: InProceedings
type: Publication
author: id98instance
author: id225instance
author: id31instance
author: id557instance
author: id573instance
author: id574instance
has project: id35instance
month: September
note: Dot.Kom Deliverable D3-3
title: IE Evaluation Strategy
year: 2003

id879instance
type: InProceedings
type: Publication
author: id13instance
author: id6instance
author: id98instance
author: id223instance
author: id305instance
author: id31instance
author: id3instance
author: id557instance
author: id559instance
author: id562instance
author: id563instance
author: id564instance
author: id565instance
author: id566instance
author: id567instance
author: id568instance
author: id569instance
author: id573instance
author: id574instance
author: id578instance
author: id579instance
author: id580instance
has project: id35instance
month: January
note: Dot.Kom Deliverable D5-1
title: Tool Evaluation
year: 2004

id87instance
type: Article
type: Publication
author: id13instance
author: id6instance
author: id31instance
has project: id23instance
is about: id81instance
journal: Expert Update, Special Issue - Intelligent Services for The Knowledge Lifecycle
pages: 20-31
title: S-CREAM -- Semi-automatic CREAtion of Metadata
year: 2002

id880instance
type: Misc
type: Publication
author: id20instance
author: id6instance
author: id80instance
has project: id42instance
has project: id43instance
howpublished: Poster at WWW05, Chiba, Japan
is about: id134instance
is about: id71instance
is about: id79instance
month: May
title: Bootstrapping Ontology Alignment Methods with APFEL
year: 2005

id881instance
type: InProceedings
type: Publication
abstract: Mapping of ontologies generalizes a number of problems occurring in realistic semantic web applications such as the following ones: (I) Data integration is concerned with the use of data from different sources in one application. The data from the different sources needs to be presented to the user in a unified way. Typical scenarios include (a) the integration of relational databases into semantic web applications, where database schemas are first “lifted” to the ontology level and then mapped to the ontologies of the applications, and (b) the usage of different heterogeneous ontologies within semantic web applications (e.g. by reusing different domain ontologies). (II) Ontology evolution deals with the fact that in reality ontologies are typically not static entities but they rather evolve over time. This holds also for ontologies which participate in mappings to other ontologies. Therefore one can further distinguish between (a) evolving ontology mappings, (b) mapping different versions of multiple evolving ontology, and (c) mapping between versions of one ontology. To handle the increasing number of individual ontologies, but also for being able to create mappings on the fly, it becomes necessary to develop automatic approaches. In this paper, we determine mappings based on the similarity of the features of individual ontological entities. We show that mappings can be derived automatically and on the fly by encoding similarities into logical axioms and processing them with an inference engine. The advantages of this approach are obvious. Firstly, the axioms can easily be reused for mappings of arbitrary ontologies, no additional modeling effort is required. Secondly, the inference engine is the only mandatory technological infrastructure which means that no additional implementation effort is needed.
author: id20instance
author: id80instance
booktitle: Professional Knowledge Management: Third Biennial Conference, WM 2005, Kaiserslautern, Germany, April 10-13, 2005, Revised Selected Papers
has project: id42instance
has project: id43instance
has project: id49instance
is about: id68instance
is about: id79instance
month: April
pages: 560 - 569
series: LNCS
title: Ontology Mapping by Axioms (OMA)
volume: 3782
year: 2005

id882instance
type: InProceedings
type: Publication
abstract: Semantic alignment between ontologies is a necessary precondition to establish interoperability between agents or services using different ontologies. Thus, in recent years different methods for automatic ontology alignment have been proposed to deal with this challenge. Thereby, the proposed methods were constricted to one of two different paradigms: Either, (i), proposals would include a manually predefined automatic method for proposing alignments, which would be used in the actual alignment process. They typically consist of a number of substrategies such as finding similar labels. Or, (ii), proposals would learn an automatic alignment method based on instance representations, e.g. bag-of-word models of documents. Both paradigms suffer from drawbacks. The first paradigm suffers from the problem that it is impossible, even for an expert knowledge engineer, to predict what strategy of aligning entities is most successful for a given pair of ontologies. This is especially the case with increasing complexity of ontology languages or increasing amounts of domain specific conventions. The second paradigm is often hurt by the lack of instances or instance descriptions. Also, knowledge encoded in the intensional descriptions of concepts and relations is only marginally exploited by this way. Hence, there remains the need to automatically combine multiple diverse and complementary alignment strategies of all indicators, i.e. extensional and intensional descriptions, in order to produce comprehensive, effective and efficient semi-automatic alignment methods. Such methods need to be flexible to cope with different strategies for various application scenarios, e.g. by using parameters. We call them “Parameterizable Alignment Methods” (PAM).We have developed a bootstrapping approach for acquiring the parameters that drive such a PAM. We call our approach APFEL for “Alignment Process Feature Estimation and Learning”.
address: Kaiserslautern, Germany
author: id20instance
author: id6instance
author: id80instance
booktitle: Professional Knowledge Management: Third Biennial Conference, WM 2005
has project: id42instance
has project: id43instance
has project: id49instance
is about: id134instance
is about: id71instance
is about: id79instance
month: April
pages: 508 - 517
series: LNAI
title: Supervised Learning of an Ontology Alignment Process
volume: 3782
year: 2005

id883instance
type: Publication
type: TechnicalReport
author: id80instance
author: id386instance
author: id582instance
has project: id43instance
has project: id49instance
is about: id79instance
month: January
series: 2.2.2
title: Specification of a benchmarking methodology for alignment techniques
type: Knowledge Web Deliverable
year: 2005

id884instance
type: Publication
type: TechnicalReport
author: id80instance
author: id510instance
author: id512instance
author: id583instance
author: id584instance
has project: id42instance
has project: id49instance
is about: id79instance
month: January
series: 4.4.1
title: Ontology Mediation Management V1
type: SEKT Deliverable
year: 2005

id885instance
type: InProceedings
type: Publication
address: Stockholm, Sweden
author: id2065instance
author: id2078instance
author: id79instance
booktitle: 6th IEEE International Workshop on Policies for Distributed Systems and Networks (POLICY 2005)
has project: id38instance
has project: id39instance
has project: id42instance
has project: id51instance
is about: id114instance
is about: id136instance
month: June
pages: 159-168
title: Approximating Service Utility from Policies and Value Function Patterns
year: 2005

id887instance
type: Article
type: Publication
abstract: Purpose - This paper proposes solutions to problems related to the maintenance and update of already existing e-learning courseware. Design/methodology/approach - A structured approach in form of a reference model for the re-engineering of existing educational material is presented. In this context, concepts already established in the area of aspect-oriented programming are applied to deal with crosscutting concerns in e-learning material. Finally, a software product line approach is proposed for the creation of new courseware using re-engineered components. Findings - It turns out that some aspects of the methodology developed for aspect-oriented programming can also be used to restructure the existing e-learning material in such a way that maintenance is eased and redundancy is significantly reduced. In addition, software product lines for e-learning material provide a global framework for coordinating the re-engineering and reuse of components. Practical implications - The advantage of the proposed approach is that existing e-learning standards and systems do not have to be modified or adapted. Originality/value - Usually, courseware evolves during a longer period of time and its development does not start every time from zero. There is a high incentive for re-engineering of existing courseware, since it constitutes in many cases the competitive advantage of companies or universities. However, up to now, little attention is paid to the maintenance and the efficient update of e-learning material which is already there.
author: id2044instance
author: id38instance
author: id157instance
is about: id149instance
is about: id20instance
is about: id85instance
journal: The Learning Organization: An International Journal
note: Emerald Group Publishing. DOI 10.1108/09696470510611401
number: 5
pages: 457-470
title: Aspect-Oriented Reengineering of E-Learning Courseware
volume: 12
year: 2005

id888instance
type: Publication
type: TechnicalReport
abstract: DLP &#8211; Description Logic Programs &#8211; is the name for the common language that is able to integrate knowledge bases described in Description Logic with Logic Programs. In this introduction, we offer a very short overview of DLP, the motivation for it, the benefits it offers and how to use it.
author: id2023instance
author: id2084instance
author: id2097instance
author: id20instance
author: id57instance
has project: id42instance
has project: id50instance
is about: id105instance
is about: id129instance
is about: id58instance
is about: id69instance
is about: id79instance
month: February
title: DLP - An introduction
year: 2005

id889instance
type: InProceedings
type: Publication
abstract: Without the proliferation of formal semantic annotations, the Semantic Web is certainly doomed to failure. In earlier work we presented a new paradigm to avoid this: the 'Self Annotating Web', in which globally available knowledge is used to annotate resources such as web pages. In particular, we presented a concrete method instantiating this paradigm, called PANKOW (Pattern-based ANnotation through Knowledge On the Web). In PANKOW, a named entity to be annotated is put into several linguistic patterns that convey competing semantic meanings. The patterns that are matched most often on the Web indicate the meaning of the named entity --- leading to automatic or semi-automatic annotation. In this paper we present C-PANKOW (Context-driven PANKOW), which alleviates several shortcomings of PANKOW. First, by downloading abstracts and processing them off-line, we avoid the generation of large number of linguistic patterns and correspondingly large number of Google queries. Second, by linguistically analyzing and normalizing the downloaded abstracts, we increase the coverage of our pattern matching mechanism and overcome several limitations of the earlier pattern generation process. Third, we use the annotation context in order to distinguish the significance of a pattern match for the given annotation task. Our experiments show that C-PANKOW inherits all the advantages of PANKOW (no training required etc.), but in addition it is far more efficient and effective.
address: Chiba, Japan
author: id6instance
author: id98instance
author: id586instance
booktitle: Proceedings of the 14th World Wide Web Conference
has project: id35instance
is about: id49instance
month: May
pages: 332 - 341
title: Gimme The Context: Context-driven automatic semantic annotation with C-PANKOW
year: 2005

id88instance
type: InProceedings
type: Publication
author: id21instance
author: id38instance
booktitle: Multi-Konferenz Wirtschaftsinformatik 2002, E-Learning, Nürnberg, 9. - 11. September 2002
is about: id101instance
title: Erstellung von hypermedialen Kursen - ein Vorgehensmodell
year: 2002

id890instance
type: InProceedings
type: Publication
abstract: Ontology merging describes the process of integrating two (or more) ontologies into a single one. How this is done best is a subject of ongoing research in the Semantic Web community. We propose a generic solution to the question, what the result of a merging should be in the ideal case. We will do this independent of a specific choice of ontology representation language, and thus provide a sort of blueprint for the development of algorithms applicable in practice. Our methods are taken from category theory. More precisely, we will argue that ontology merging is best captured by the notion of categorical pushout. Our paper is a first step towards the development of practically applicable algorithms.
author: id2084instance
author: id20instance
author: id2107instance
author: id80instance
booktitle: Proceedings of the First International Workshop on Contexts and Ontologies: Theory, Practice and Applications (C&0). Workshop at the 20th National Conference on Artificial Intelligence, AAAI-05, Pittsburgh, Pennsylvania, July 2005
has project: id43instance
has project: id50instance
is about: id68instance
is about: id79instance
is about: id80instance
month: July
pages: 104-107
title: What Is Ontology Merging? – A Category-Theoretical Perspective Using Pushouts
year: 2005

id891instance
type: InProceedings
type: Publication
abstract: Knowledge representation using ontologies constitutes the heart of semantic technologies. Despite successful standardization efforts by the W3C, however, there are still numerous different ontology representation languages being used, and interoperability between them is in general not given. The problem is aggrevated by the fact that current standards lay foundations only and are well-known to be insufficient for the modelling of finer details. Thus, a plethora of extensions of the basic languages is being proposed, rendering the picture of ontology representation languages to be chaotic, to say the least. While semantic technologies start to become applicable and are being applied in adjacent areas of research and in research projects with industrial participation, and can soon be expected to become an integral part of industrial applications, the practitioner is faced with the difficult task of choosing his basic ontology representation paradigm. We will argue that the OWL subset known as Description Logic Programs constitutes a very reasonable choice.
author: id2084instance
author: id20instance
author: id57instance
booktitle: 1st Workshop on Formal Ontologies Meet Industry, FOMI'05, Verona, Italy, June 2005
has project: id42instance
has project: id43instance
has project: id50instance
is about: id105instance
is about: id129instance
is about: id55instance
is about: id79instance
month: March
title: Description Logic Programs: A Practical Choice For the Modelling of Ontologies
year: 2005

id892instance
type: InProceedings
type: Publication
address: Heraklion, Crete, Greece
author: id2055instance
author: id20instance
author: id6instance
author: id83instance
booktitle: Second European Semantic Web Conference, (ESWC 2005)
has project: id42instance
is about: id29instance
is about: id53instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
month: May
pages: 241--256
series: LNCS
title: An Argumentation Ontology for DIstributed, Loosely-controlled and evolvInG Engineering processes of oNTologies (DILIGENT)
volume: 3532
year: 2005

id893instance
type: Publication
type: TechnicalReport
abstract: The focus of research on representing and reasoning with knowledge traditionally has been on single specifications and appropriate inference paradigms to draw conclusions from such data. Accordingly, this is also an essential aspect of ontology research which has received much attention in recent years. But ontologies introduce another new challenge based on the distributed nature of most of their applications, which requires to relate heterogeneous ontological specifications and to integrate information from multiple sources. These problems have of course been recognized, but many current approaches still lack the deep formal backgrounds on which todays reasoning paradigms are already founded. Here we propose category theory as a well-explored and very extensive mathematical foundation for modelling distributed knowledge. A particular prospect is to derive conclusions from the structure of those distributed knowledge bases, as it is for example needed when merging ontologies.
author: id2084instance
author: id20instance
author: id2107instance
author: id80instance
has project: id42instance
has project: id43instance
has project: id50instance
is about: id68instance
is about: id79instance
is about: id80instance
month: March
title: Category Theory in Ontology Research: Concrete Gain from an Abstract Approach
year: 2005

id894instance
type: Article
type: Publication
abstract: Can you build the Semantic Web in one day? Most likely your answer would be "No, that’s impossible." Let’s look at a simpler question: Can you build the Web in one day? If you consider the Web in its entirety, your answer would also be "No." But what if you think of it as magnitudes smaller? You can build HTML pages in minutes and a simple Web shop in a few hours, including, for example, applying for Web space. All this in the same amount of time it takes your kids to set up a wireless LAN, install a Web server, and create a Web site for the home intranet to show family vacation pictures. You can realize a broad range of applications quite easily. To determine just how far Semantic Web technologies have come, we wanted to create a snapshot of what you could do by applying and assembling existing Semantic Web technologies — in one day. Our experiment’s main aim was to get a feel for the practical applicability of current research by integrating different technologies into something "up and running." As an added benefit, we learned a lot about the areas in which the Semantic Web’s many research directions intersect, such as knowledge representation, natural language processing, and peer-to-peer.
author: id2065instance
author: id2084instance
author: id20instance
author: id57instance
has project: id43instance
has project: id49instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
journal: IEEE Intelligent Systems
month: May
number: 3
pages: 85-87
title: The Semantic Web in One Day
volume: 20
year: 2005

id895instance
type: InProceedings
type: Publication
author: id13instance
author: id2079instance
author: id6instance
author: id462instance
author: id463instance
author: id464instance
author: id465instance
author: id466instance
author: id473instance
author: id585instance
booktitle: The Semantic Web: Research and Applications: Proceedings of the Second European Semantic Web Conference, ESWC 2005, Heraklion, Crete, Greece, May 29-June 1, 2005
has project: id44instance
is about: id137instance
is about: id153instance
is about: id53instance
is about: id69instance
is about: id70instance
is about: id81instance
month: May
pages: 592-607
series: Lecture Notes in Computer Science
title: Semantic Annotation of Images and Videos for Multimedia Analysis
volume: 3532
year: 2005

id896instance
type: Proceedings
type: Publication
abstract: Proceedings of the First European Semantic Web Symposium (ESWS 2004) held on Crete, Greece, in May 2004. 27 papers for the academic track and 6 papers for the industrial track span a wide range of topics from the Semantic Web area.
editor: id57instance
editor: id67instance
editor: id237instance
editor: id6instance
is about: id79instance
month: May
title: Proceedings of the First European Semantic Web Symposium (ESWS 2004)
year: 2004

id897instance
type: InProceedings
type: Publication
author: id2084instance
author: id41instance
author: id57instance
author: id5instance
booktitle: Proceedings of the W3C Workshop on Rule Languages for Interoperability, Washington, D.C., USA
has project: id43instance
has project: id50instance
has project: id62instance
is about: id105instance
is about: id129instance
is about: id69instance
is about: id79instance
month: April
title: Bridging the Paradigm Gap with Rules for OWL
year: 2005

id898instance
type: InProceedings
type: Publication
abstract: In this paper we present an application of the logic-based query refinement in the searching for information in an information portal. The refinement approach is based on discovering causal relationships between queries regarding the inclusion relation between the answers of these queries. We define a formal model for the query-answering pairs and use methods from inductive logic programming for the efficient calculation of a (lattice) order between them. In a case study regarding searching a bibliographic database we demonstrate the benefits of using our approach in the traditional information retrieval tasks, especially the combination of the free-text based querying and the logic-based query refinement.
author: id32instance
booktitle: 5th International Conference on Practical Aspects of Knowledge Management
has project: id32instance
is about: id102instance
month: December
pages: 340-355
title: An Approach for the Efficient Retrieval
year: 2004

id899instance
type: InProceedings
type: Publication
abstract: In this paper we present an approach for the interactive refinement of ontology-based queries. The approach is based on generating a lattice of the refinements, that enables a step-by-step tailoring of a query to the current information needs of a user. These needs are implicitly elicited by analysing the user’s behaviour during the searching process. The gap between a user’s need and his query is quantified by measuring several types of query ambiguities, that are used for ranking of the refinements. The main advantage of the approach is a more cooperative support in the refinement process: by exploiting the ontology background, the approach supports finding “similar” results and enables efficient relaxing of failing queries. Regarding an evaluation study, we discuss how a traditional on-line product catalog application can benefit from employing more formal, machine-readable semantics for describing its content, thus integrating such a catalog into the Semantic Web.
author: id32instance
booktitle: 23rd International Conference on Conceptual Modeling (ER2004)
has project: id32instance
is about: id70instance
month: November
title: On Modelling Cooperative Retrieval Using an Ontology-based Query Refinement Process
year: 2004

id89instance
type: Article
type: Publication
author: id38instance
author: id80instance
is about: id9instance
journal: WIRTSCHAFTSINFORMATIK
number: 6
pages: 523 - 533
title: Die Integration von Informationsverarbeitungsressourcen im Rahmen von Mergers & Acquisitions
volume: 44
year: 2002

id8instance
type: InCollection
type: Publication
abstract: Over the past few years, we have seen a growing interest in the potential of both Peer-to-Peer (P2P) computing and the use of more formal approaches to knowledge management, involving the development of ontologies. This penultimate chapter discusses possibilities that both approaches may offer for more effective and efficient knowledge management. In particular, we investigate how the two paradigms may be combined.
address: London, UK
author: id57instance
author: id67instance
author: id6instance
author: id7instance
booktitle: Ontology-based Knowledge Management: Exploiting the Semantic Web
has project: id11instance
is about: id100instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id1instance
is about: id68instance
is about: id79instance
title: A Future Perspective: Exploiting Peer-to-Peer and the Semantic Web for Knowledge Management
year: 2002

id900instance
type: InProceedings
type: Publication
author: id32instance
booktitle: IEEE International Conference on Tools with Artificial Intelligence 2004
has project: id32instance
is about: id69instance
month: November
pages: 346-357
title: An approach for ontology-enhanced query refinement in information portals
year: 2004

id901instance
type: InProceedings
type: Publication
author: id32instance
author: id53instance
booktitle: IEEE International Conference on Data Mining ICDM 2004
has project: id32instance
is about: id79instance
month: November
pages: 350-356
title: A Logic-based Approach for Query Refinement in Ontology-based Information Retrieval Systems
year: 2004

id902instance
type: InProceedings
type: Publication
abstract: Morphisms constitute a general tool for modelling complex relationships between mathematical objects on a large scale. In Formal Concept Analysis (FCA), morphisms can therefore be used for the study of structural properties of the knowledge represented in formal contexts, with applications to data transformation and merging. In this paper we present a comprehensive treatment of some of the most important morphisms in FCA and their relationships, which includes the study of dual bonds, scale measures, infomorphisms and their respective relations to Galois connections. We summarize our results in a concept lattice that displays all relationships between the considered morphisms. The purpose of this foundational work is to provide a basis for future applications of FCA in ontology research and similar areas, where morphisms provide a way to formalize the interplay between distributed knowledge bases.
author: id2084instance
author: id2107instance
author: id469instance
booktitle: Conceptual Structures: Common Semantics for Sharing Knowledge. Proceedings of the 13th International Conference on Conceptual Structures, ICCS '05, Kassel, Germany, July 2005
has project: id43instance
has project: id50instance
is about: id105instance
is about: id132instance
is about: id36instance
is about: id58instance
is about: id79instance
month: July
pages: 223-237
series: Lecture Notes in Computer Science
title: Morphisms in Context
volume: 3596
year: 2005

id903instance
type: InProceedings
type: Publication
address: Regensburg
author: id2023instance
author: id32instance
author: id80instance
author: id93instance
booktitle: 13th European Conference on Information Systems
has project: id32instance
has project: id42instance
has project: id43instance
has project: id49instance
is about: id69instance
is about: id79instance
month: May
title: Similarity for Ontologies - A Comprehensive Framework
year: 2005

id904instance
type: InProceedings
type: Publication
abstract: We argue that the field of neural-symbolic integration is in need of identifying application scenarios for guiding further research. We furthermore argue that ontology learning - as occuring in the context of semantic technologies - provides such an application scenario with potential for success and high impact on neural-symbolic integration.
author: id2084instance
author: id448instance
author: id454instance
booktitle: Proceedings of the IJCAI-05 Workshop on Neural-Symbolic Learning and Reasoning, NeSy
has project: id43instance
has project: id50instance
is about: id131instance
is about: id55instance
is about: id71instance
is about: id79instance
month: August
title: Ontology leaning as a use case for neural-symbolic integration
year: 2005

id905instance
type: InProceedings
type: Publication
abstract: Significant advances have recently been made concerning the integration of symbolic knowledge representation with artificial neural networks (also called connectionist systems). However, while the integration with propositional paradigms has resulted in applicable systems, the case of first-order knowledge representation has so far hardly proceeded beyond theoretical studies which prove the existence of connectionist systems for approximating first-order logic programs up to any chosen precision. Advances were hindered severely by the lack of concrete algorithms for obtaining the approximating networks which were known to exist: the corresponding proofs are not constructive in that they do not yield concrete methods for building the systems. In this paper, we will make the required advance and show how to obtain the structure and the parameters for different kinds of connectionist systems approximating covered logic programs.
author: id2084instance
author: id448instance
author: id587instance
booktitle: Proceedings of the IJCAI-05 Workshop on Neural-Symbolic Learning and Reasoning, NeSy
has project: id42instance
has project: id43instance
has project: id50instance
is about: id129instance
is about: id131instance
is about: id55instance
month: August
title: Integrating First Order Logic Programs and Connectionist Systems - A Constructive Approach
year: 2005

id906instance
type: InProceedings
type: Publication
abstract: Artificial neural networks can be trained to perform excellently in many application areas. While they can learn from raw data to solve sophisticated recognition and analysis problems, the acquired knowledge remains hidden within the network architecture and is not readily accessible for analysis or further use: Trained networks are black boxes. Recent research efforts therefore investigate the possibility to extract symbolic knowledge from trained networks, in order to analyze, validate, and reuse the structural insights gained implicitly during the training process. In this paper, we will study how knowledge in form of propositional logic programs can be obtained in such a way that the programs are as simple as possible &#8212; where simple is being understood in some clearly defined and meaningful way.
author: id2084instance
author: id448instance
author: id589instance
booktitle: Proceedings of the IJCAI-05 Workshop on Neural-Symbolic Learning and Reasoning, NeSy
has project: id42instance
has project: id43instance
has project: id50instance
is about: id129instance
is about: id131instance
is about: id55instance
month: August
title: Extracting Reduced Logic Programs from Artificial Neural Networks
year: 2005

id907instance
type: InProceedings
type: Publication
abstract: In this paper we present Text2Onto, a framework for ontology learning from textual resources. Three main features distinguish Text2Onto from our earlier framework TextToOnto as well as other state-of-the-art ontology learning frameworks. First, by representing the learned knowledge at a meta-level in the form of instantiated modeling primitives within a so called Probabilistic Ontology Model (POM), we remain independent of a concrete target language while being able to translate the instantiated primitives into any (reasonably expressive) knowledge representation formalism. Second, user interaction is a core aspect of Text2Onto and the fact that the system calculates a confidence for each learned object allows to design sophisticated visualizations of the POM. Third, by incorporating strategies for data-driven change discovery, we avoid processing the whole corpus from scratch each time it changes, only selectively updating the POM according to the corpus changes instead. Besides increasing efficiency in this way, it also allows a user to trace the evolution of the ontology with respect to the changes in the underlying corpus.
address: Alicante, Spain
author: id2053instance
author: id98instance
booktitle: Proceedings of the 10th International Conference on Applications of Natural Language to Information Systems (NLDB)
has project: id35instance
has project: id42instance
has project: id49instance
has project: id50instance
is about: id110instance
is about: id71instance
month: June
pages: 227-238
series: Lecture Notes in Computer Science
title: Text2Onto - A Framework for Ontology Learning and Data-driven Change Discovery
volume: 3513
year: 2005

id908instance
type: InProceedings
type: Publication
author: id2023instance
author: id2079instance
author: id20instance
author: id83instance
author: id93instance
booktitle: Proceedings of the 5th International Conference on Knowledge Management (I-KNOW 05), Graz, Austria, June 29 - July 1, 2005
has project: id42instance
is about: id102instance
is about: id103instance
is about: id123instance
is about: id52instance
is about: id68instance
is about: id69instance
month: July
pages: 278--285
title: Intelligent Community Lifecycle Support
year: 2005

id909instance
type: InProceedings
type: Publication
author: id2058instance
author: id507instance
booktitle: Proc. 2. Konferenz Professionelles Wissensmanagement - Erfahrungen und Visionen
is about: id41instance
month: June
pages: S. 363-368
series: LNI
title: Entwicklung eines prozessbasierten Unternehmensportals zum dynamischen Wissensmanagement
volume: 28
year: 2003

id90instance
type: Article
type: Publication
abstract: Quality information systems (QIS) are providing all the quality-relevant information during the whole life cycle of a product to all the people involved. With regard to e-learning applications this means that a QIS should provide quality-relevant information to the authors of e-learning materials as well as to the instructors and the learners using them. In this work it is described how such a QIS can be implemented in the context of e-learning applications. In this connection a prototypic system design and strategies for the integration of a QIS into the information system infrastructure of e-learning providers are presented.
author: id23instance
has project: id8instance
is about: id20instance
journal: EURODL - European Journal of Open and Distance Learning. Thematic issue "ICL2002"
month: January
title: Implementation of Quality Information Systems for E-Learning Applications
year: 2003

id911instance
type: InProceedings
type: Publication
author: id2058instance
author: id504instance
booktitle: 37th Hawaii International Conference on System Sciences (HICSS-37 2004)
is about: id124instance
month: January
title: Process Management in Supply Chains - A New Petri-Net Based Approach
year: 2004

id912instance
type: Article
type: Publication
author: id2058instance
is about: id41instance
journal: Automation
month: February
number: 01/05
pages: 89-92
title: Abläufe im Reagenzglas
year: 2005

id913instance
type: InProceedings
type: Publication
author: id2058instance
booktitle: Beitragsband zum Studierenden-Programm bei der 9. Fachtagung "Datenbanksysteme in Büro, Technik und Wissenschaft
is about: id41instance
month: February
pages: S. 19-20
title: Modellierung von dokumentenbasierten Geschäftsprozessen mit XML-Netzen
year: 2001

id914instance
type: InProceedings
type: Publication
address: Hong Kong, China
author: id1876instance
author: id1954instance
author: id2058instance
booktitle: Proc. 2nd IEEE Conference on e-Technology, e-Commerce and e-Services
is about: id12instance
month: April
pages: 89-92
title: Process-oriented Business Performance Management with Petri Nets
year: 2005

id916instance
type: Misc
type: Publication
abstract: The general topic of this thesis is the investigation of various notions of morphisms between logical deductive systems, motivated by the intuition that additional (categorical) structure is needed to model the interrelations of formal specifications. This general task necessarily involves considerations in various mathematical disciplines, some of which might be interesting in their own right and which can be read independently. To find suitable morphisms, we review the relationships of formal logic, algebra, topology, domain theory, and formal concept analysis (FCA). This leads to a rather complete exposition of the representation theory of algebraic lattices, including some novel interpretations in terms of FCA and an explicit proof of the cartestian closedness of the emerging category. It also introduces the main concepts of «domain theory in logical form» for a particularly simple example. In order to incorporate morphisms from FCA, we embark on the study of various context morphisms and their relationships. The discovered connections are summarized in a hierarchy of context morphisms, which includes dual bonds, scale measures, and infomorphisms. Finally, we employ the well-known means of Stone duality to unify the topological and the FCA-based approach. A notion of logical consequence relation with a suggestive proof theoretical reading is introduced as a morphism between deductive systems, and special instances of these relations are identified with morphisms from topology, FCA, and lattice theory. Especially, scale measures are recognized as topologically continuous mappings, and infomorphisms are identified both with coherent maps and with Lindenbaum algebra homomorphisms.
author: id2107instance
howpublished: Master's thesis, Technische Universität Dresden
is about: id132instance
is about: id133instance
is about: id36instance
is about: id58instance
is about: id94instance
month: February
title: Morphisms in Logic, Topology, and Formal Concept Analysis
year: 2005

id919instance
type: InProceedings
type: Publication
address: Porto/Portugal
author: id1876instance
author: id2072instance
booktitle: Proceedings of the CAiSE´05 WORKSHOPS
month: June
number: 2
pages: 321-333
title: Ontology based Business Process Description
year: 2005

id91instance
type: InProceedings
type: Publication
abstract: The combination of Semantic Web and Peer-to-Peer is highly innovative with prospective benefits to the the individualization of work views as well as to the facilitation of knowledge sharing between peers. SWAP will tackle the semantic challenges brought up by this novel combination such that knowledge finding and sharing is effectively possible.
address: London
author: id6instance
author: id80instance
author: id83instance
author: id66instance
author: id81instance
author: id82instance
author: id84instance
booktitle: 4th European Workshop on Image Analysis for Multimedia Interactive Services (WIAMIS'03), London
has project: id30instance
is about: id102instance
is about: id104instance
is about: id123instance
is about: id29instance
is about: id79instance
month: April
note: 9.-11.4.2003
pages: 557-562
title: SWAP: ONTOLOGY-BASED KNOWLEDGE MANAGEMENT WITH PEER-TO-PEER
year: 2003

id921instance
type: InProceedings
type: Publication
address: 9.-11. Mai 2005 in Bonn
author: id1876instance
author: id2072instance
author: id217instance
booktitle: 11.IuK-Jahrestagung 2005
title: Das Fachportal io-port.net –Fachinformationssystem für die Informatik
year: 2005

id922instance
type: Misc
type: Publication
author: id2053instance
author: id20instance
author: id98instance
has project: id42instance
has project: id49instance
howpublished: Demo at ESWC2005
is about: id71instance
is about: id80instance
month: May
title: Text2Onto - A Framework for Ontology Learning and Datadriven Change Discovery
year: 2005

id923instance
type: InProceedings
type: Publication
author: id38instance
author: id99instance
booktitle: WM2005: Professional Knowledge Management, Experiences and Visions
month: April
pages: 663-670
title: Einführung eines Wissensinformationssystems in ein KMU, mit Pilotprojekt
year: 2005

id924instance
type: InProceedings
type: Publication
abstract: Large information repositories as digital libraries, online shops, etc. rely on a taxonomy of the objects under consideration to structure the vast contents and facilitate browsing and searching (e.g., ACM topic classification for computer science literature, Amazon product taxonomy, etc.). As in heterogenous communities users typically will use different parts of such an ontology with varying intensity, customization and personalization of the ontologies is desirable. Of particular interest for supporting users during the personalization are collaborative filtering systems which can produce personal recommendations by computing the similarity between own preferences and the one of other people. In this paper we adapt a collaborative filtering recommender system to assist users in the management and evolution of their personal ontology by providing detailed suggestions of ontology changes. Such a system has been implemented in the context of Bibster, a peer-to-peer based personal bibliography management tool. Finally, we report on an experiment with the Bibster community that shows the performance improvements over non-personalized recommendations.
author: id14instance
author: id2023instance
author: id2040instance
author: id20instance
booktitle: Proceedings of the Second European Semantic Web Conference, Heraklion, Greece, 2005
has project: id42instance
has project: id49instance
is about: id123instance
is about: id79instance
month: May
pages: 486-499
series: LNCS
title: Collaborative and Usage-driven Evolution of Personal Ontologies
volume: 3532
year: 2005

id925instance
type: InProceedings
type: Publication
author: id2023instance
author: id53instance
booktitle: Proceedings of the Second European Semantic Web Conference, Heraklion, Greece, 2005
has project: id42instance
month: May
pages: 182-197
series: Lecture Notes in Computer Science
title: Consistent Evolution of OWL Ontologies
volume: 3532
year: 2005

id926instance
type: Publication
type: TechnicalReport
author: id2065instance
author: id2078instance
author: id6instance
author: id79instance
has project: id50instance
has project: id51instance
is about: id136instance
is about: id69instance
title: Semantic Management of Web Services
year: 2005

id927instance
type: InProceedings
type: Publication
address: Dresden
author: id28instance
author: id2instance
author: id78instance
booktitle: Proceedings zur Konferenz INFOS' 05
is about: id20instance
month: September
pages: 231-241
title: Effektive Java-Grundausbildung unter Einsatz eines Learning Management Systems und spezieller Werkzeuge
year: 2005

id928instance
type: InProceedings
type: Publication
author: id12instance
author: id2039instance
author: id2042instance
author: id501instance
booktitle: Mobile Datenbanken: heute, morgen und in 20 Jahren. 8. Workshop des GI-Arbeitskreises "Mobile Datenbanken und Informationssysteme" im Rahmen der BTW 2005 in Karlsruhe
month: February
pages: 11-20
title: Kontextsensitives mobiles Marketing
year: 2005

id929instance
type: Article
type: Publication
abstract: This paper presents a framework for ontology evolution tailored to Digital Libraries, which makes use of two different sources for change detection and propagation, the usage of ontologies by users and the changes of available data. After presenting the logical architecture of the evolution framework, we first illustrate how to deal with usage-driven changes, that is changes derived from the actual usage of ontologies. Second, we describe the generation of data-driven ontology changes based on the constant flow of documents coming into Digital Libraries. The proposed framework for ontology ontology evolution, which is currently applied and evaluated in case studies, significantly reduces the costs of ontology updates and improves the quality of the ontology with respect to the users’ requirements.
author: id2023instance
author: id2053instance
author: id20instance
has project: id42instance
has project: id49instance
is about: id102instance
is about: id71instance
is about: id79instance
journal: Journal of Knowledge Management
month: October
number: 5
pages: 97-107
title: Management of Dynamic Knowledge
volume: 9
year: 2005

id92instance
type: InProceedings
type: Publication
abstract: The combination of Semantic Web and Peer-to-Peer is highly innovative with prospective benefits to the the individualization of work views as well as to the facilitation of knowledge sharing between peers. SWAP will tackle the semantic challenges brought up by this novel combination such that knowledge finding and sharing is effectively possible.
address: Bonn
author: id6instance
author: id80instance
author: id83instance
author: id7instance
author: id81instance
author: id82instance
author: id84instance
booktitle: Workshop ontologiebasiertes Wissensmanagement, WM 2003, Lucern
has project: id30instance
is about: id104instance
is about: id123instance
is about: id68instance
is about: id79instance
pages: 17-20
series: Lecture Notes in Informatics (LNI)
title: SWAP: ONTOLOGY-BASED KNOWLEDGE MANAGEMENT WITH PEER-TO-PEER
volume: P-28
year: 2003

id930instance
type: InProceedings
type: Publication
author: id2084instance
author: id2097instance
booktitle: Proceedings of the 12th Workshop on Automated Reasoning, ARW 2005, Edinburgh, UK, July 2005
has project: id42instance
has project: id43instance
has project: id50instance
is about: id105instance
is about: id129instance
is about: id58instance
is about: id79instance
month: July
title: Faster OWL Using Split Programs
year: 2005

id931instance
type: Misc
type: Publication
abstract: dlpconvert converts the OWL/XML presentation or RDF/XML-Serialisation of a knowledgebase defined within DLP into the datalog representation.
author: id2084instance
author: id2097instance
author: id20instance
author: id2111instance
author: id57instance
has project: id42instance
has project: id49instance
has project: id50instance
has project: id62instance
howpublished: Poster at the ESWC2005
is about: id129instance
is about: id58instance
is about: id68instance
is about: id79instance
is about: id80instance
month: May
title: dlpconvert - Converting OWL DLP statements to logic programs
year: 2005

id932instance
type: Article
type: Publication
abstract: The ontology engineering methodology DILIGENT is presented, a methodology focussing on the evolution of ontologies and in particular on users and their usage of the ontology instead of the initial design, thus recognizing that knowledge is a tangible and moving target.
author: id2055instance
author: id2097instance
author: id20instance
author: id83instance
has project: id42instance
has project: id49instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id79instance
journal: Journal of Knowledge Management
month: October
number: 5
pages: 85-96
title: The DILIGENT Knowledge Processes
volume: 9
year: 2005

id933instance
type: InProceedings
type: Publication
abstract: We propose a new technique for approximate ABox reasoning with OWL DL ontologies. It comes as a side-product of recent research results on the relationship between OWL DL and disjunctive datalog [1–4]. Essentially, it relies on a new transformation of OWL DL ontologies into negation-free disjunctive datalog, and on the idea of performing standard resolution over disjunctive rules by treating them as if they were non-disjunctive ones. We analyse our reasoning approach by means of non-monotonic reasoning techniques, and present an implementation, called Screech.
author: id2084instance
author: id2097instance
booktitle: Proceedings of the 4th International Semantic Web Conference, Galway, Ireland, November 2005
has project: id42instance
has project: id43instance
has project: id50instance
has project: id62instance
is about: id105instance
is about: id129instance
is about: id130instance
is about: id17instance
is about: id55instance
is about: id58instance
is about: id79instance
month: November
pages: 383-397
series: Lecture Notes in Computer Science
title: Resolution-Based Approximate Reasoning for OWL DL
volume: 3729
year: 2005

id935instance
type: Article
type: Publication
abstract: This article provides an overview about the Semantic Web, its importance and history and an overview of recent Semantic Web Technologies which can be used to enhance Digital Libraries. The paper answers, at least partially, questions like 'What is the Semantic Web?', 'How could the Semantic Web look like?', 'Why is the Semantic Web important?', 'What are Ontologies?' and 'Where are we now?'. Several pointers to further literature and web sites complete the overview. We point out that Semantic Web Technologies are valuable add-ons for Digital Libraries. There already exist numerous academic and commercial tools which can be applied right now. The article is of particular value for newcomers in this area.
author: id20instance
author: id57instance
has project: id42instance
has project: id49instance
is about: id102instance
is about: id104instance
is about: id68instance
is about: id69instance
is about: id70instance
is about: id71instance
is about: id79instance
is about: id80instance
journal: Library Management
month: April
note: Special Issue: Semantic Web
number: 4/5
pages: 190-195
title: Semantic Web Technologies for Digital Libraries
volume: 26
year: 2005

id936instance
type: InProceedings
type: Publication
address: Munich, Germany
author: id2078instance
author: id91instance
booktitle: Proceedings of the 7th IEEE International Conference on E-Commerce Technology 2005
has project: id38instance
has project: id39instance
has project: id51instance
is about: id114instance
is about: id24instance
is about: id25instance
is about: id37instance
month: July
pages: 405--408
title: sMart - A Semantic Matchmaking Portal for Electronic Markets
year: 2005

id937instance
type: InProceedings
type: Publication
abstract: Python reached out to a wide and diverse audience in the last few years. During its evolution it combined a number of different paradigms under its hood: imperative, object-oriented, functional, listoriented, even aspect-oriented programming paradigms are allowed, but still remain true to the Python way of programming, thus retaining simplicity, readability and fun. OWL is a knowledge representation language for the definition of ontologies, standardised by the W3C. It reaps upon the power of Description Logics and allows both the definition of concepts and their interrelations as well as the description of instances. Being created as part of the notoriously known Semantic Web language stack, its dynamics and openness lends naturally to the ever evolving Python language. We will sketch the idea of an integration of OWL and Python, but not by simply suggesting an OWL library, but rather by introducing and motivating the benefits a really deep integration offers, how it can change programming, and make it even more fun.
address: Herakleion, Greece
author: id2097instance
booktitle: 1st International Workshop on Scripting for the Semantic Web SFSW 2005
has project: id42instance
has project: id49instance
is about: id129instance
is about: id68instance
is about: id69instance
is about: id79instance
is about: id80instance
is about: id85instance
month: May
series: CEUR Workshop Proceedings
title: Deep Integration of Scripting Languages and Semantic Web Technologies
volume: 135
year: 2005

id939instance
type: InProceedings
type: Publication
address: Copenhagen, Denmark
author: id91instance
author: id169instance
booktitle: 6th International Conference on Electronic Commerce and Web Technologies
has project: id38instance
has project: id51instance
is about: id119instance
is about: id79instance
is about: id80instance
is about: id82instance
month: August
pages: 348-357
series: Lecture Notes in Computer Science
title: Specification of Access Control and Certification Policies for Semantic Web Services
volume: 3590
year: 2005

id93instance
type: InProceedings
type: Publication
abstract: In the last years, the main orientation of Formal Concept Analysis (FCA) has turned from mathematics towards computer science. This article provides a review of this new orientation and analyzes why and how FCA and computer science attracted each other. It discusses FCA as a knowledge representation formalism using five knowledge representation principles provided by Davis, Shrobe, and Szolovits (1993). It then studies how and why mathematics-based researchers got attracted by computer science. We will argue for continuing this trend by integrating the two research areas FCA and Ontology Engineering.
author: id8instance
booktitle: Conceptual Structures: Integration and Interfaces, Proc. ICCS 2002
has project: id16instance
is about: id36instance
pages: 2-19
title: Formal Concept Analysis on its Way from Mathematics to Computer Science
year: 2002

id940instance
type: InProceedings
type: Publication
abstract: Multidimensional dynamic logic programs are a paradigm which allows to express (partially) hierarchically ordered evolving knowledge bases through (partially) ordered multi sets of logic programs and allowing to solve contradictions among rules in different programs by allowing rules in more important programs to reject rules in less important ones. This class of programs extends the class of dynamic logic program that provides meaning and semantics to sequences of logic programs. Recently a semantics named refined stable model semantics has fixed some counterintuitive behaviour of previously existing semantics for dynamic logic programs. However, it is not possible to directly extend the definitions and concepts of the refined semantics to the multidimensional case and hence more sophisticated principles and techniques are in order. In this paper we face the problem of defining a proper semantics for multidimensional dynamic logic programs by extending the idea of well supported model to this class of programs and by showing that this concept alone is enough for univocally characterizing a proper semantics. We then show how the newly defined semantics coincides with the refined one when applied to sequences of programs.
author: id2084instance
author: id590instance
author: id591instance
author: id592instance
booktitle: Logic Programming and Nonmonotonic Reasoning, 8th International Conference, LPNMR 2005, Diamante, Italy, September 5-8, 2005, Proceedings
has project: id43instance
has project: id50instance
is about: id129instance
is about: id130instance
is about: id53instance
month: September
pages: 356-368
series: Lecture Notes in Computer Science
title: The well-supported semantics for multidimensional dynamic logic programs
volume: 3662
year: 2005

id941instance
type: InCollection
type: Publication
author: id38instance
author: id99instance
booktitle: Wissen schafft Werte, Praktische Lösungsansätze zur Organisation von Wissen
is about: id29instance
month: May
pages: 11-13
title: Den Überblick behalten: Wissensprojekte in der ISB AG
year: 2005

id942instance
type: Misc
type: Publication
author: id79instance
author: id530instance
author: id593instance
author: id594instance
author: id595instance
author: id65instance
has project: id51instance
howpublished: W3C Working Draft
is about: id79instance
is about: id85instance
month: May
title: Ontology Driven Architectures and Potential Uses of the Semantic Web in Software Engineering
year: 2005

id943instance
type: InProceedings
type: Publication
author: id2065instance
author: id2078instance
author: id2084instance
author: id57instance
author: id6instance
author: id79instance
author: id91instance
author: id285instance
booktitle: Proceedings of the W3C Workshop on Frameworks for Semantics in Web Services
has project: id51instance
is about: id119instance
is about: id136instance
is about: id79instance
month: June
title: Semantic Management of Web Services using the Core Ontology of Services
year: 2005

id944instance
type: Proceedings
type: Publication
editor: id2084instance
editor: id454instance
editor: id596instance
has project: id42instance
has project: id43instance
has project: id50instance
is about: id131instance
is about: id55instance
month: August
title: Proceedings of the IJCAI-05 Workshop on Neural-Symbolic Learning and Reasoning, NeSy'05, Edinburgh, UK, August 2005
year: 2005

id945instance
type: Proceedings
type: Publication
abstract: The ICT profession has high impact on employment, business and society. The competitiveness of the European industry increasingly depends on both the effective use of ICT in industry and business and the level of knowledge, skills and competences of existing and new employees. This workshop aimed to discuss the state of play and activities of current initiatives and to draw conclusions on the way forward. The workshop is promoting relevant stakeholders to work actively together and is contributing to the current debate by inviting high level speakers and linking ongoing initiatives and activities. CEPIS organised this workshop jointly with Cedefop, the European Union Agency for the Development of Vocational Training, which is based in Thessaloniki/Greece.
editor: id2062instance
editor: id38instance
editor: id600instance
has project: id57instance
is about: id20instance
month: May
series: CEPIS Workshop Proceedings eChallenges, 28 October 2004, Vienna, Austria
title: Towards European Standards for e-Skills and Qualifications
volume: 2004
year: 2005

id946instance
type: InProceedings
type: Publication
abstract: The objective of our research project is to learn from an identified real life business case at hand in form of a running inter-organisational collaboration. The aim of the research task is to facilitate cross-organisational business processes (CBPs) under consideration of aspects of ergonomics in order to provide adequate work procedures for employees in SMEs. The chosen apporach addresses technical and human aspects, respectively. The latter are to cause severe tensions between entrepreneurs and employees working in inter-organisational settings e.g by intransparency of the whole value chain process and lack of shared vision and knowledge. Therefore, the goal is to design a holistic and interdisciplinary framework for research and to identify some leverage points for collaborational work. Starting point is the analysis of the business scenario at hand. The paper intends to present the chosen approach and wants to discuss hitherto existing lessons learned.
address: Amsterdam
author: id2062instance
author: id598instance
author: id599instance
booktitle: Innovation and the Knowledge Economy: Issues, Applications, Case Studies
has project: id53instance
is about: id98instance
title: Facilitate Successful Cross-Organisational Business Processes - A Business Case
year: 2005

id947instance
type: InProceedings
type: Publication
abstract: e-Skills certification plays a crucial role implementing and promoting high standards among ICT professionals/ practitioners and ICT end users. CEPIS studied on behalf of Cedefop the situation of e-Skills Certification in Europe. The study identified voluntary approaches offered by widely applied e-skills certifications. The operational objective for this study has been the evaluation of issues of e-skills certification at the International and European level by analysing attitudes of stakeholders towards current and future European level activities and highlighting potential solutions and recommendations to perceived problems. Based on the achieved results and outcome of the conducted study, the authors propose and illustrate a possible path towards internationally agreed certifications and recognised qualifications throughout Europe.
address: Amsterdam
author: id2062instance
author: id38instance
author: id601instance
author: id602instance
booktitle: Innovation and the Knowledge Economy: Issues, Applications, Case Studiese
has project: id57instance
is about: id20instance
month: October
title: e-Skills Certification in Europe Towards Harmonisation
year: 2005

id948instance
type: Publication
type: TechnicalReport
abstract: Multiple certification programmes and systems are known in the ICT industries and other fields of application throughout Europe. Certification and quality standards in ICT education and training are extremely important for both employments in the ICT labour market and as a basis for a sustainable professional career. CEPIS studied and compared, on behalf of Cedefop, existing approaches to e-skills certification on European level. This European study compares and analyses e-skills certification systems. It wants to compare and categorise the identified systems, underlying models and approaches, providers and procedures. The survey investigates the whole range of approaches: public and private, commercial and voluntary standards for e-skills certification. The focus lies on most widely applied systems in the respondents’ countries on the one hand and takes into consideration their potential with regard to their possible contribution to convening and implementing standards throughout Europe.
author: id2062instance
author: id38instance
author: id601instance
author: id602instance
has project: id52instance
is about: id20instance
month: March
title: e-Skills Certification in Europe: Voluntary Approaches to Setting European Level Quality Standards
year: 2005

id949instance
type: Proceedings
type: Publication
editor: id2062instance
editor: id38instance
editor: id600instance
has project: id57instance
is about: id20instance
series: CEPIS Workshop Proceedings eChallenges, 20 October 2005, Ljubljana, Slovenia - in progress
title: Promoting New Ways for Certification, Accreditation and Assessment
volume: 2005
year: 2005

id94instance
type: InProceedings
type: Publication
abstract: Formal Concept Analysis is an unsupervised learning technique for conceptual clustering. We introduce the notion of iceberg concept lattices and show their use in Knowledge Discovery in Databases (KDD). Iceberg lattices are designed for analyzing very large databases. In particular they serve as a condensed representation of frequent patterns as known from association rule mining. In order to show the interplay between Formal Concept Analysis and association rule mining, we discuss the algorithm Titanic. We show that iceberg concept lattices are a starting point for computing condensed sets of association rules without loss of information, and are a visualization method for the resulting rules.
author: id8instance
booktitle: Database and Expert Systems Applications. Proc. DEXA 2002
has project: id16instance
is about: id36instance
pages: 534-546
series: LNCS
title: Efficient Data Mining Based on Formal Concept Analysis
volume: 2453
year: 2002

id950instance
type: InProceedings
type: Publication
abstract: Performance Performance Management of collaborative business processes refers to the modeling, analyzing and monitoring of interrelated production, logistics and information processes on an operational level. In this context it is essential to figure out how critical situations can be detected in time, and how important changes can be discovered as early as possible. In particular analyzing potential exceptional states of performance indicators and matching counter measures in target-oriented simulation scenarios before implementing collaborative business processes is not supported by the current approaches. In this paper, we present a process-oriented approach to performance management of collaborative business processes, based on high-level Petri nets. By employing Petri-nets performance management as a whole can be improved. We will also demonstrate the modules and basic functions of a Petri net-based, software prototype, called INCOME2010 designed to support the complete process life cycle of process-oriented Performance Management.
address: Copenhagen, Denmark
author: id1876instance
author: id2058instance
booktitle: Proc. 16th Int. Workshop on Database and Expert Systems Applications (DEXA'05)
is about: id12instance
month: August
pages: 987-991
title: A Petri-net based Approach to Performance Management of collaborative Business Processes
year: 2005

id951instance
type: InProceedings
type: Publication
address: Oranjestad, Aruba
author: id1876instance
author: id2058instance
author: id2070instance
booktitle: 8th IASTED International Conference on Computers and Advanced Technology in Education (CATE 2005)
month: August
pages: 347-352
title: Management of E-Learning Processes with high-level Petri Nets
year: 2005

id952instance
type: Article
type: Publication
abstract: Structuring of text document knowledge frequently appears either by ontologies and metadata or by automatic (un-)unsupervised text categorization. This paper describes our integrated framework OTTO (OnTology-based Text mining framewOrk). OTTO uses text mining to learn the target ontology from text documents and uses then the same target ontology in order to improve the effectiveness of both supervised and unsupervised text categorization approaches.
author: id14instance
author: id2079instance
author: id6instance
author: id98instance
is about: id111instance
is about: id134instance
is about: id71instance
is about: id93instance
journal: LDV Forum - GLDV Journal for Computational Linguistics and Language Technology
month: May
note: Alexander Mehler, Andreas Wolff (eds.)
number: 1
pages: 87-112
title: An Ontology-based Framework for Text Mining
volume: 20
year: 2005

id953instance
type: InProceedings
type: Publication
author: id1876instance
author: id1954instance
booktitle: Proc. Int. Symposium on Leveraging Applications of Formal Methods, ISoLA 2004, Paphos/Cyprus, Department of Computer Science, University of Cyprus, Technical Report
month: November
number: TR-2004-6
pages: 35-42
title: Workflow Services: A Petri Net-Based Approach to Web Services
year: 2004

id954instance
type: Proceedings
type: Publication
address: Bonn
editor: id1876instance
editor: id603instance
editor: id604instance
series: LNI
title: EMISA 2004 - Informationssysteme im E-Business und E-Government
volume: P-56
year: 2004

id955instance
type: Article
type: Publication
abstract: The specification of an information system should include a description of structural system aspects as well as a description of the system behavior. In this article, we show how this can be achieved by high-level Petri nets—namely, the so-called NR/T-nets (Nested-Relation/Transition Nets). In NR/T-nets, the structural part is modeled by nested relations, and the behavioral part is modeled by a novel Petri net formalism. Each place of a net represents a nested relation scheme, and the marking of each place is given as a nested relation of the respective type. Insert and delete operations in a nested relational database (NF2-database) are expressed by transitions in a net. These operations may operate not only on whole tuples of a given relation, but also on “subtuples” of existing tuples. The arcs of a net are inscribed with so-called Filter Tables, which allow (together with an optional logical expression as transition inscription) conditions to be formulated on the specified (sub-) tuples. The occurrence rule for NR/T-net transitions is defined by the operations union, intersection, and “negative” in lattices of nested relations. The structure of an NR/T-net, together with the occurrence rule, defines classes of possible information system procedures, i.e., sequences of (possibly concurrent) operations in an information system.
author: id1876instance
author: id1885instance
is about: id41instance
journal: ACM Transactions on Information Systems
number: 4
pages: 380-420
title: Information System Behavior Specification by High-Level Petri Nets
volume: 14
year: 1996

id956instance
type: Article
type: Publication
abstract: Dieser Beitrag beleuchtet Petri-Netze aus der Sicht der Angewandten Informatik und der Wirtschaftsinformatik. Grundprinzipien der Modellierung mit Petri-Netzen werden erläutert, verschiedene Klassen von Petri-Netzen werden vorgestellt, und Anwendungen bei der Modellierung betrieblicher Abläufe werden skizziert. In Analogie zur Datenmodellierung wird ein 3-Schichten-Modell für die Modellierung betrieblicher Abläufe vorgestellt, das durchgängig auf Petri-Netzen basiert.
author: id1876instance
author: id1966instance
is about: id124instance
journal: Wirtschaftsinformatik
number: 4
pages: 359-367
title: Petri-Netze in der Angewandten Informatik - Einführung, Grundlagen und Perspektiven
volume: 38
year: 1996

id957instance
type: Article
type: Publication
author: id1876instance
is about: id41instance
journal: Decision Support Systems
pages: 31-53
title: An Integrated Approach for the Specification of Processes and Related Complex Structured Objects in Business Applications
volume: 17
year: 1996

id958instance
type: InProceedings
type: Publication
address: Bonn
author: id28instance
author: id31instance
author: id99instance
booktitle: Information Systems Technology and its Applications
month: May
number: P-63
series: LNI
title: Evolution of Petrinet Modeled Knowledge Intensive Processes
year: 2005

id959instance
type: Misc
type: Publication
abstract: The Web Rule Language WRL is a rule-based ontology language for the Semantic Web. The language is located in the Semantic Web stack next to the Description Logic based Ontology language OWL. WRL defines three variants, namely Core, Flight and Full. The Core variant marks the common fragment between WRL and OWL. WRL-Flight is a Datalog-based rule language. WRL-Full is a full-fledged rule language with function symbols and negation under the Well-Founded Semantics.
author: id2084instance
author: id57instance
author: id510instance
author: id583instance
author: id605instance
author: id606instance
author: id607instance
author: id608instance
author: id609instance
has project: id42instance
has project: id43instance
has project: id50instance
howpublished: W3C Member Submission, 09 September 2005
is about: id105instance
is about: id129instance
is about: id58instance
is about: id69instance
is about: id79instance
month: September
title: Web Rule Language (WRL)
year: 2005

id95instance
type: InProceedings
type: Publication
abstract: In this paper, we report about the current state of ToscanaJ, the latest member of the family of Toscana programs, that have been used for conceptual data analysis and knowledge discovery. After presenting the tool itself, we shortly describe the planned Tockit framework surrounding ToscanaJ, that will provide an Open Source toolset for programs based on Formal Concept Analysis and the planning for future development.
author: id8instance
author: id85instance
author: id86instance
booktitle: Advances in Formal Concept Analysis for Knowledge Discovery in Databases. Proc. Workshop FCAKDD of the 15th European Conference on Artificial Intelligence (ECAI 2002). Lyon, France, July 23, 2002
has project: id16instance
is about: id36instance
title: ToscanaJ: An Open Source Tool for Qualitative Data Analysis
year: 2002

id960instance
type: Misc
type: Publication
author: id2084instance
author: id610instance
author: id611instance
has project: id50instance
howpublished: SmartWeb internal report
is about: id129instance
is about: id69instance
is about: id79instance
month: June
title: Zur Wahl der Inferenzmaschine in SmartWeb
year: 2005

id962instance
type: InProceedings
type: Publication
address: Graz, Austria
author: id28instance
author: id31instance
author: id99instance
booktitle: 5th International Conference on Knowledge Management
month: June
pages: 357-364
title: A Genetic Algorithm Approach to Self-Organizing Knowledge Intensive Processes
year: 2005

id963instance
type: InProceedings
type: Publication
abstract: Wikipedia is the biggest collaboratively created source of encyclopaedic knowledge. Growing beyond the borders of any traditional encyclopaedia, it is facing new problems of knowledge management: The current excessive usage of article lists and categories witnesses the fact that 19th century content organization technologies like inter-article references and indices are no longer sufficient for today's needs. Rather, it is necessary to allow knowledge processing in a computer assisted way, for example to intelligently query the knowledge base. To this end, we propose the introduction of typed links as an extremely simple and unintrusive way for rendering large parts of Wikipedia machine readable. We provide a detailed plan on how to achieve this goal in a way that hardly impacts usability and performance, propose an implementation plan, and discuss possible difficulties on Wikipedia's way to the semantic future of the World Wide Web. The possible gains of this endeavor are huge; we sketch them by considering some immediate applications that semantic technologies can provide to enhance browsing, searching, and editing Wikipedia.
author: id2076instance
author: id2097instance
author: id2107instance
booktitle: Proceedings of Wikimania 2005 - The First International Wikimedia Conference
has project: id42instance
has project: id43instance
is about: id137instance
is about: id68instance
is about: id70instance
is about: id79instance
is about: id80instance
is about: id81instance
month: July
title: Wikipedia and the Semantic Web - The Missing Links
year: 2005

id964instance
type: InProceedings
type: Publication
address: Bonn, Germany
author: id6instance
author: id98instance
booktitle: Proceedings of the ICML 2005 Workshop on Learning and Extending Lexical Ontologies with Machine Learning Methods
has project: id50instance
is about: id71instance
month: August
title: Learning Concept Hierarchies from Text with a Guided Agglomerative Clustering Algorithm
year: 2005

id965instance
type: Book
type: Publication
editor: id98instance
editor: id612instance
editor: id613instance
has project: id35instance
has project: id50instance
is about: id71instance
isbn: 1-58603-523-1
month: July
series: Frontiers in Artificial Intelligence
title: Ontology Learning from Text: Methods, Evaluation and Applications
volume: 123
year: 2005

id966instance
type: InProceedings
type: Publication
address: Ann Arbor, Michigan
author: id98instance
author: id614instance
booktitle: Proceedings of the ACL Workshop on Deep Lexical Acquisition
has project: id50instance
is about: id111instance
month: June
pages: 28-37
title: Automatically Learning Qualia Structures from the Web
year: 2005

id967instance
type: InCollection
type: Publication
author: id2040instance
author: id2056instance
author: id6instance
author: id98instance
booktitle: Ontology Learning from Text: Methods, Evaluation and Applications
has project: id50instance
is about: id71instance
month: July
pages: 59-73
series: Frontiers in Artificial Intelligence
title: Learning Taxonomic Relations from Heterogeneous Sources of Evidence
volume: 123
year: 2005

id968instance
type: InProceedings
type: Publication
address: Graz, Austria
author: id2023instance
author: id2053instance
author: id20instance
author: id32instance
booktitle: Proceedings of the 5th International Conference on Knowledge Management (I-KNOW 05)
has project: id30instance
has project: id42instance
has project: id55instance
is about: id117instance
is about: id123instance
month: July
pages: 104-111
title: Personalized Information Retrieval in Bibster, a Semantics-Based Bibliographic Peer-to-Peer System
year: 2005

id969instance
type: InProceedings
type: Publication
abstract: Advertising on mobile terminals is a consequential advancement of traditional methods of advertising. In this article we will discuss the special potentials and challenges of mobile advertising and introduce the MoMa-system as approach to enable personalized and context sensitive advertising while guaranteeing data protection, whereas context isn&#8217;t limited to just location.
address: Brighton, UK
author: id12instance
author: id2039instance
author: id2042instance
author: id501instance
booktitle: Proceedings of EURO mGOV 2005
has project: id34instance
is about: id59instance
pages: 445-454
title: Enabling Personalized and Context Sensitive Mobile Advertising while Guaranteeing Data Protection
year: 2005

id96instance
type: InProceedings
type: Publication
author: id88instance
author: id8instance
booktitle: Semantic Web Mining. Proc. of the Semantic Web Mining Workshop of the 13th Europ. Conf. on Machine Learning (ECML'02) / 6th Europ. Conf. on Principles and Practice of Knowledge Discovery in Databases (PKDD'02), Helsinki, August 19, 2002
has project: id32instance
is about: id79instance
title: Semantic Methods and Tools for Information Portals -- The SemIPort Project
year: 2002

id970instance
type: InProceedings
type: Publication
abstract: Mobile terminals, such as cellular phones and PDAs, have an enormous advertising potential: they are extremely popular and most people carry such devices with them all day, enabling personalized advertising. However, there is a serious danger that the Spam wave, known from e-mail communication, will spillover to mobile devices. In addition, it is important to take protection of private data seriously, because mobile terminals are also used for personal communication. In this article we discuss the special features and challenges of mobile advertising and introduce the MoMa-system for mobile advertising. MoMa supports personalized advertising using context information while guaranteeing data protection. We also name criteria for the comparison of mobile advertising systems and apply them to compare MoMa to other approaches.
address: Munich, Germany
author: id12instance
author: id2039instance
author: id2042instance
author: id501instance
booktitle: Proceedings of the 2nd IEEE International Workshop on Mobile Commerce and Services (WMCS '05)
has project: id34instance
is about: id59instance
month: July
pages: 174-182
title: Comparison of Different Approaches for Mobile Advertising
year: 2005

id971instance
type: InProceedings
type: Publication
address: Reading, UK
author: id12instance
author: id2039instance
author: id2042instance
author: id501instance
booktitle: Proceedings of 2nd International Conference on E-Business and Telecommunication Networks (ICETE 2005)
has project: id34instance
is about: id59instance
month: October
pages: 49-56
title: Advertising via Mobile Terminals
year: 2005

id972instance
type: InProceedings
type: Publication
address: Wiesbaden
author: id12instance
author: id2039instance
author: id2041instance
author: id2042instance
booktitle: Perspektiven des Mobile Business - Wissenschaft und Praxis im Dialog
has project: id34instance
is about: id59instance
month: August
pages: 19-34
title: Kontextsensitive Werbung auf mobilen Endgeräten
year: 2005

id973instance
type: InProceedings
type: Publication
address: Wiesbaden
author: id12instance
author: id2042instance
author: id615instance
booktitle: Perspektiven des Mobile Business
has project: id34instance
is about: id59instance
month: August
pages: 97-112
title: MVNO - Aussichten des deutschen Mobilfunkmarktes
year: 2005

id974instance
type: Publication
type: TechnicalReport
abstract: SEKT aims to integrate approaches from Machine Learning (ML), Human Language Technology (HLT) and Ontology and Metadata Management (OM). This deliverable is part of the SEKT bottom-up integration activities and lays the foundation for a number of deliverables (D6.6.x). It explores integration directions for these three research fields and reports on the ongoing and scheduled technical integration activities between the different software tool suites provided by the respective workpackages (WP1 - WP3).
author: id2023instance
author: id2053instance
author: id2079instance
author: id20instance
author: id617instance
author: id618instance
author: id619instance
has project: id42instance
is about: id110instance
is about: id134instance
is about: id68instance
is about: id71instance
month: July
series: 6.6.1
title: D6.6.1 Report on the integration of ML, HLT and OM
type: SEKT Deliverable
year: 2005

id975instance
type: InProceedings
type: Publication
abstract: OntoClean is a unique approach towards the formal evaluation of ontologies, as it analyses the intensional content of concepts. Although it is well documented in numerous publications, and its importance is widely acknowledged, it is still used rather infrequently due to the high costs for applying OntoClean, especially on tagging concepts with the correct meta-properties. In order to facilitate the use of OntoClean and to enable proper evaluation of it in real-world cases, we provide AEON, a tool which automatically tags concepts with appropriate OntoClean meta-properties. The implementation can be easily expanded to check the concepts for other abstract meta-properties, thus providing for the first time tool support in order to enable intensional ontology evaluation for concepts. Our main idea is using the web as an embodiment of objective world knowledge, where we search for patterns indicating concepts meta-properties. We get an automatic tagging of the ontology, thus reducing costs tremendously. Moreover, AEON lowers the risk of having subjective taggings. As part of the evaluation we report our experiences from creating a middle-sized OntoClean-tagged reference ontology.
author: id2053instance
author: id2097instance
author: id20instance
booktitle: Proceedings of the 4th International Semantic Web Conference (ISWC2005)
has project: id42instance
has project: id49instance
is about: id69instance
is about: id70instance
is about: id79instance
month: November
pages: 716-731
series: LNCS
title: Automatic Evaluation of Ontologies (AEON)
volume: 3729
year: 2005

id976instance
type: Misc
type: Publication
abstract: We present a preliminary version of the approximate OWL reasoning system SCREECH. It builds on the KAON2 system and performs OWL ABox reasoning in an approximate manner. It trades soundness of reasoning for efficiency, with resulting polynomial worst-case data complexity. It has been developed for use in time-critical applications where quick response time is more important than a full guarantee of correctness of answers. The theoretical background for the system is explained in [Hitzler and Vrandecic, Proc. ISWC 2005].
author: id2084instance
author: id2097instance
has project: id42instance
has project: id43instance
has project: id50instance
has project: id62instance
howpublished: ISWC2005 Software Demo Abstract
is about: id79instance
month: July
title: The SCREECH OWL reasoner - Scalable approximate ABox reasoning for OWL
year: 2005

id977instance
type: Article
type: Publication
abstract: bstract: We present a novel approach to the automatic acquisition of taxonomies or concept hierarchies from a text corpus. The approach is based on Formal Concept Analysis (FCA), a method mainly used for the analysis of data, i.e. for investigating and processing explicitly given information. We follow Harris' distributional hypothesis and model the context of a certain term as a vector representing syntactic dependencies which are automatically acquired from the text corpus with a linguistic parser. On the basis of this context information, FCA produces a lattice that we convert into a special kind of partial order constituting a concept hierarchy. The approach is evaluated by comparing the resulting concept hierarchies with hand-crafted taxonomies for two domains: tourism and finance. We also directly compare our approach with hierarchical agglomerative clustering as well as with Bi-Section-KMeans as an instance of a divisive clustering algorithm. Furthermore, we investigate the impact of using different measures weighting the contribution of each attribute as well as of applying a particular smoothing technique to cope with data sparseness.
author: id14instance
author: id6instance
author: id98instance
has project: id35instance
has project: id50instance
is about: id71instance
journal: Journal of Artificial Intelligence Research (JAIR)
month: August
pages: 305-339
title: Learning Concept Hierarchies from Text Corpora using Formal Concept Anaylsis
volume: 24
year: 2005

id978instance
type: InCollection
type: Publication
author: id2084instance
author: id448instance
booktitle: We Will Show Them: Essays in Honour of Dov Gabbay
is about: id129instance
is about: id131instance
is about: id134instance
is about: id55instance
is about: id58instance
month: July
pages: 167-194
title: Dimensions of neural-symbolic integration - a structured survey
volume: 1
year: 2005

id979instance
type: Article
type: Publication
abstract: Intelligent systems based on first-order logic on the one hand, and on artificial neural networks (also called connectionist systems) on the other, differ substantially. It would be very desirable to combine the robust neural networking machinery with symbolic knowledge representation and reasoning paradigms like logic programming in such a way that the strengths of either paradigm will be retained. Current state-of-the-art research, however, fails by far to achieve this ultimate goal. As one of the main obstacles to be overcome we perceive the question how symbolic knowledge can be encoded by means of connectionist systems: Satisfactory answers to this will naturally lead the way to knowledge extraction algorithms and to integrated neural-symbolic systems.
author: id2084instance
author: id448instance
author: id449instance
has project: id43instance
has project: id50instance
is about: id129instance
is about: id131instance
is about: id134instance
is about: id55instance
is about: id58instance
journal: Information
month: January
note: Invited paper
number: 1
title: The Integration of Connectionism and First-Order Knowledge Representation and Reasoning as a Challenge for Artificial Intelligence
volume: 9
year: 2006

id97instance
type: InProceedings
type: Publication
abstract: Semantic Web Mining aims at combining the two fast-developing research areas Semantic Web and Web Mining. Web Mining aims at discovering insights about the meaning of Web resources and their usage. Given the primarily syntactical nature of data Web mining operates on, the discovery of meaning is impossible based on these data only. Therefore, formalizations of the semantics of Web resources and navigation behavior are increasingly being used. This fits exactly with the aims of the Semantic Web: the Semantic Web enriches the WWW by machine-processable information which supports the user in his tasks. In this paper, we discuss the interplay of the Semantic Web with Web Mining, with a specific focus on usage mining.
author: id14instance
author: id8instance
author: id17instance
booktitle: Next Generation Data Mining. Proc. NSF Workshop, Baltimore, Nov. 2002
has project: id32instance
is about: id15instance
is about: id51instance
is about: id79instance
pages: 77-86
title: Usage Mining for and on the Semantic Web
year: 2002

id980instance
type: InProceedings
type: Publication
abstract: Im E-Learning-Umfeld haben sich Lernobjekte als eine spezielle Art von Komponenten herauskristallisiert, um Lerninhalte aller Art zu kapseln. Damit wird beabsichtigt, dass Lerninhalte strukturiert gespeichert, effizient wieder verwendet und flexibel zwischen verschiedenen E-Learning-Plattformen ausgetauscht werden können. Allerdings scheinen Lernobjekte im Hinblick auf technische, organisatorische und ökonomische Aspekte noch lange nicht so erfolgreich zu sein wie ursprünglich erhofft. Dieser Beitrag identifiziert einige der Gründe, indem Erkenntnisse aus dem Gebiet der komponentenbasierten Software-Entwicklung auf E-Learning und Lernobjekte übertragen werden.
address: Ilmenau
author: id1876instance
author: id2044instance
author: id38instance
booktitle: 9. Workshop Multimedia in Bildung und Wirtschaft
is about: id20instance
is about: id85instance
is about: id91instance
is about: id92instance
month: September
title: Lernobjekte im E-Learning - Eine kritische Beurteilung zugrunde liegender Konzepte anhand eines Vergleichs mit komponentenbasierter Software-Entwicklung
year: 2005

id981instance
type: InProceedings
type: Publication
abstract: We present semantic management of Web Services as a paradigm that is located between the two extremes of current Web Services standards descriptions and tools, which we abbreviate by WS*, and Semantic Web Services. On the one hand, WS* does not have an integrated formal model incurring high costs for managing Web Services in a declarative, but mostly manual fashion. On the other hand, the latter aims at the formal modelling of Web Services such that full automation of Web Service discovery, composition, invocation, etc., becomes possible — thereby incurring unbearably high costs for modelling. Based on a set of use cases, we identify who benefits from what kind of semantic modelling of Web Services, when and for what purposes. We present how an ontology is used in an implemented prototype.
author: id2065instance
author: id2078instance
author: id6instance
author: id79instance
booktitle: Service-Oriented Computing - ICSOC 2005: Third International Conference, Amsterdam, The Netherlands, December 12-15, 2005. Proceedings
has project: id39instance
has project: id42instance
has project: id50instance
has project: id51instance
is about: id119instance
is about: id135instance
is about: id69instance
is about: id80instance
month: December
pages: 514-519
series: Lecture Notes in Computer Science
title: Semantic Management of Web Services
volume: 3826
year: 2005

id982instance
type: InProceedings
type: Publication
abstract: One of the major problems of large scale, distributed and evolving ontologies is the potential introduction of inconsistencies. In this paper we survey four different approaches to handling inconsistency in DL-based ontologies: consistent ontology evolution, repairing inconsistencies, reasoning in the presence of inconsistencies and multi-version reasoning. We present a common formal basis for all of them, and use this common basis to compare these approaches. We discuss the different requirements for each of these methods, the conditions under which each of them is applicable, the knowledge requirements of the various methods, and the different usage scenarios to which they would apply.
author: id2023instance
author: id20instance
author: id622instance
author: id7instance
author: id84instance
booktitle: Proceedings of the Fourth International Semantic Web Conference (ISWC2005)
has project: id42instance
is about: id79instance
month: November
pages: 353-367
series: LNCS
title: A Framework for Handling Inconsistency in Changing Ontologies
volume: 3729
year: 2005

id983instance
type: InProceedings
type: Publication
address: Borovets, Bulgaria
author: id2053instance
author: id98instance
booktitle: Proceedings of the International Conference on Recent Advances in Natural Language Processing (RANLP)
has project: id35instance
has project: id42instance
has project: id49instance
has project: id50instance
is about: id110instance
is about: id71instance
month: September
pages: 166-172
title: Towards large-scale, open-domain and ontology-based named entity classification
year: 2005

id984instance
type: Publication
type: TechnicalReport
abstract: The world is constantly changing, and so does required and available knowledge, e.g. stored in Digital Libraries. Knowledge workers heavily rely on the availability and accessibility of knowledge contained in such libraries. The sheer mass of knowledge available today, however, requires sophisticated support for searching and, often considered as equally important, personalization. In SEKT we address these challenges by using ontologies. Ontologies by nature make implicit knowledge explicit, they describe relevant parts of the world and make them machine understandable and processable. To be effective, ontologies need to change possibly as fast as the parts of the world they describe. Change discovery aims at generating implicit requirements by inducing ontology changes from existing data. In this deliverable we focus on usage-driven change discovery. Usage data is a very valuable source of contextual information, based on which the ontology can be modified in order to reflect changes in the real world, We describe a framework, in which ontology evolution and discovering potentially useful changes can be formalized as an optimization problem. We introduce the notion of an evaluation function that allows to measure the quality of an ontology with respect to given criteria. We instantiate the framework for the task of ontology pruning based on usage data, and for the task of collaborative evolution in a multi-user scenario, in which users maintain personalized ontologies. A first case study based on the Bibster system shows very promising results.
author: id2023instance
author: id20instance
has project: id42instance
is about: id70instance
is about: id79instance
month: June
series: 3.2.1
title: Usage Tracking for Ontology Evolution
type: SEKT Deliverable
year: 2005

id985instance
type: InProceedings
type: Publication
address: Montreal, Canada
author: id28instance
author: id2instance
author: id78instance
booktitle: Proceedings of World Conference on Educational Multimedia, Hypermedia and Telecommunications 2005
month: June
pages: 978-985
title: Towards a Framework for Improving the Design of Programming Exercises
year: 2005

id986instance
type: Misc
type: Publication
author: id2071instance
author: id2instance
author: id46instance
author: id78instance
howpublished: RZ News Juli/August, Seite 8 - 12
month: July
title: Online Prüfung mit ILIAS
year: 2005

id987instance
type: InProceedings
type: Publication
address: Nürnberg, Germany
author: id2071instance
author: id2instance
author: id46instance
author: id78instance
booktitle: Proceedings of the 4th International ILIAS Conference
month: October
pages: 20-24
title: Durchführung von Onlineklausuren mit ILIAS
year: 2005

id988instance
type: Publication
type: TechnicalReport
abstract: The increasing popularity of e-learning has lead to the creation of an abundance of learning material. Very often, after the initial creation, the growing amount of content also leads to a more complicated content maintenance, since updates typically occur very often and the potential variability of modifications is not limited in advance. Moreover, commonalities between different parts of material are not exploited, which often leads to redundancy. The composition of content from different sources rarely produces satisfactory results. To help remedy this situation, this paper introduces the PROduct Lines for dIgital COntent (PROLICO) approach, which applies the concept of software product lines to digital content, and in particular, to educational material in e-learning. The PROLICO approach manages explicitly the commonalities in learning material by defining common requirements, limiting variability in advance, as well as planning and coordinating reuse.
author: id1876instance
author: id2044instance
author: id38instance
is about: id106instance
is about: id117instance
is about: id124instance
is about: id140instance
is about: id20instance
is about: id56instance
is about: id85instance
is about: id88instance
is about: id91instance
is about: id92instance
is about: id99instance
month: August
note: ISBN 3-9810441-0-X
series: 501
title: Product Lines in E-Learning
year: 2005

id989instance
type: Article
type: Publication
abstract: The tremendous success of the World Wide Web is countervailed by efforts needed to search and find relevant information. For tabular structures embedded in HTML documents typical keyword or link-analysis based search fails. The Semantic Web relies on annotating resources such as documents by means of ontologies and aims to overcome the bottleneck of finding relevant information. Turning the current Web into a Semantic Web requires automatic approaches for annotation since manual approaches will not scale in general. Most efforts have been devoted to automatic generation of ontologies from text, but with quite limited success. However, tabular structures require additional efforts, mainly because understanding of table contents requires a table structures comprehension task and a semantic interpretation task, which exceeds in complexity the linguistic task. The focus of this paper is on automatic transformation and generation of semantic (F-Logic) frames from table-like structures. The presented work consists of a methodology, an accompanying implementation (called TARTAR) and a thorough evaluation. It is based on a grounded cognitive table model which is stepwise instantiated by the methodology. A typical application scenario is the automatic population of ontologies to enable query answering over arbitrary tables (e.g. HTML tables).
author: id2056instance
author: id20instance
author: id57instance
author: id98instance
author: id623instance
author: id624instance
has project: id35instance
has project: id42instance
has project: id49instance
has project: id50instance
is about: id102instance
is about: id137instance
is about: id49instance
is about: id71instance
is about: id79instance
is about: id81instance
journal: Data & Knowledge Engineering (DKE)
note: accepted for publication
title: Transforming Arbitrary Tables into F-Logic Frames with TARTAR
year: 2006

id98instance
type: Article
type: Publication
abstract: We introduce the notion of iceberg concept lattices and show their use in Knowledge Discovery in Databases (KDD). Iceberg lattices are a conceptual clustering method, which is well suited for analyzing very large databases. They also serve as a condensed representation of frequent itemsets, as starting point for computing bases of association rules, and as a visualization method for association rules. Iceberg concept lattices are based on the theory of Formal Concept Analysis, a mathematical theory with applications in data analysis, information retrieval, and knowledge discovery. We present a new algorithm called Titanic for computing (iceberg) concept lattices. It is based on data mining techniques with a level-wise approach. In fact, Titanic can be used for a more general problem: Computing arbitrary closure systems when the closure operator comes along with a so-called weight function. Applications providing such a weight function include association rule mining, functional dependencies in databases, conceptual clustering, and ontology engineering. The algorithm is experimentally evaluated and compared with B. Ganter's Next-Closure algorithm. The evaluation shows an important gain in efficiency, especially for weakly correlated data.
author: id8instance
author: id87instance
author: id88instance
author: id89instance
author: id90instance
has project: id16instance
is about: id36instance
journal: Journal on Knowledge and Data Engineering (KDE)
number: 2
pages: 189-222
title: Computing Iceberg Concept Lattices with Titanic
volume: 42
year: 2002

id990instance
type: InProceedings
type: Publication
address: International Workshop on Modeling Inter-Organizational Systems in conjunction with OnTheMove Federated Conferences, Agia Napa (Cyprus)
author: id2058instance
author: id2072instance
booktitle: OTM 2005 workshop proceedings
month: October
pages: 495-505
series: LNCS
title: A Petri Net Based Approach For Process Model Driven Deduction Of BPEL Code
volume: 3762
year: 2005

id991instance
type: InProceedings
type: Publication
abstract: We discuss some of the recent controversies concerning the DLP fragment of OWL. We argue that it is a meaningful fragment and can serve as a basic interoperability layer between OWL and logic programming-based ontology languages.
author: id2023instance
author: id2084instance
author: id20instance
author: id2107instance
author: id57instance
booktitle: Proceedings of the Workshop OWL - Experiences and Directions, Galway, Ireland
has project: id42instance
has project: id43instance
has project: id50instance
is about: id105instance
is about: id129instance
is about: id53instance
is about: id79instance
month: November
note: Online http://ftp.informatik.rwth-aachen.de/Publications/CEUR-WS/Vol-188/sub2.pdf
series: CEUR Workshop Proceedings
title: DLP isn't so bad after all
volume: 188
year: 2005

id992instance
type: Publication
type: TechnicalReport
abstract: After 18 months of operation, cooperation and active participation on meetings in the research area of Knowledge Web is in place. In 2005 all WPs met at the Joint Knowledge Web Research meeting on 24th-25th January 2005 at Hannover, Germany and the Joint Knowledge Web Research meeting following the ESWC 2nd European Semantic Web Conference, ESWC 2005, in Heraklion, Crete 2nd-3rd May 2005. Before M12 the area managers had emphasized additionality instead of duplication of effort, and have encouraged cross collaboration between WPs, the SDK cluster, the WSMO projects and other activities. To strengthen the cross-WP-fertilization we introduced for both meetings in 2005 a new form in addition to regular WP meetings: so-called themed research meetings (aka. join sessions or concertation meetings). For each themed meeting the major topic of one research WP has been highlighted as theme, in January this had been "Web Services" and in May this had been "Language Extensions". Operationalization of a themed meeting consists of a series of bi-lateral meetings of the highlighted WP with all the remaining ones. In this deliverable we present a brief overview of the research advance achieved so far which consists of summaries of the results so far achieved in each research work package (WP2.1 Scalability, WP2.2 Heterogeneity, WP2.3 Scalability, WP2.4 Web Services and WP2.5 Language Extensions) and summaries of bi-lateral meetings among different work packages.
author: id20instance
author: id57instance
author: id530instance
author: id625instance
has project: id43instance
has project: id49instance
is about: id68instance
is about: id79instance
month: July
series: 2.6.4
title: Report on Research Advance
type: Knowledge Web Deliverable
year: 2005

id993instance
type: Publication
type: TechnicalReport
abstract: This deliverable presents T-REX, the program in Knowledge Web (KWeb) to support “Topic-oriented Research EXchange”, and gives an overview of the exchanges performed in 2004. The short-term goal of T-REX is to encourage, support and manage the exchange of researchers across KWeb members. The long-term goal of T-REX is to strengthen the European research area by establishing strong and lasting links across research organizations, e.g. visible by shared publications of KWeb members.
author: id20instance
author: id57instance
has project: id43instance
has project: id49instance
is about: id68instance
is about: id79instance
month: December
series: 2.6.2
title: Report on Research Exchange and Collaboration
type: Knowledge Web Deliverable
year: 2004

id994instance
type: Publication
type: TechnicalReport
abstract: This deliverable provides an overview about the workshops and conferences organized under the umbrella of Knowledge Web by its partners. Support of events is organized along a well-defined set of criteria which enable different levels of support.
author: id20instance
author: id57instance
author: id386instance
has project: id43instance
has project: id49instance
is about: id68instance
is about: id79instance
month: December
series: 2.6.3
title: Report on Workshop and Conference Organization
type: Knowledge Web Deliverable
year: 2004

id995instance
type: Publication
type: TechnicalReport
author: id2067instance
author: id2078instance
has project: id39instance
month: April
title: Trading Services in Ontology-driven Markets
year: 2005

id996instance
type: Publication
type: TechnicalReport
abstract: This deliverable shows examples about approximating symbolic inference engines in a Semantic Web environment. Approaches of language weakening, knowledge compilation, and approximated deduction are presented. The last one is evaluated in practical applications with mixed results.
author: id2084instance
author: id529instance
author: id530instance
author: id531instance
author: id532instance
author: id5instance
author: id61instance
author: id84instance
has project: id43instance
is about: id129instance
is about: id58instance
is about: id79instance
month: December
series: 2.1.2
title: Methods for Approximate Reasoning
type: Knowledge Web Deliverable
year: 2004

id997instance
type: InProceedings
type: Publication
address: Humboldt-Universität zu Berlin
author: id2072instance
author: id2121instance
booktitle: Proceedings des 12. Workshops Algorithmen und Werkzeuge für Petrinetze (AWPN'05)
is about: id124instance
is about: id137instance
month: September
pages: 66-71
title: Semantische Annotation von Petri-Netzen
year: 2005

id998instance
type: InProceedings
type: Publication
address: Enschede, The Netherlands
author: id2078instance
author: id626instance
author: id627instance
author: id628instance
author: id629instance
booktitle: Proceedings of the Workshop on Contract Architectures and Languages (CoALa 2005), in conjunction with the 9th IEEE International Enterprise Computing Conference (EDOC 2005)
has project: id39instance
month: September
title: A Modeling Perspective on Web Service Contracting
year: 2005

id99instance
type: InProceedings
type: Publication
abstract: Semantic Web Mining combines two fast-developing research areas: Semantic Web and Web Mining. In this connection, the intention is to improve, on the one hand, Web Mining methods by new formal semantics represented in the Web and to utilize Web Mining results, on the other hand, for building up the Semantic Web. We also present the SemIPort project, in which methods and tools for semantic information portals will be developed.
author: id14instance
author: id8instance
author: id90instance
booktitle: Proc. Arbeitskreistreffen Knowledge Discovery, Oldenburg, Sept. 2002
has project: id32instance
is about: id15instance
is about: id49instance
is about: id68instance
is about: id79instance
pages: 34-38
title: Semantic Web Mining for Building Information Portals (Position Paper)
year: 2002

id9instance
type: InCollection
type: Publication
abstract: Technology for knowledge management has so far focused on the management of knowledge containers. We present an approach that is oriented towards managing knowledge contents instead by identifying knowledge items at various levels of formality. This is done by providing various types of meta data that are tied to ontologies for conceptual interlinkage. Knowledge items are embedded into knowledge processes, which are supported by a suite of ontology-based tools. In order to handle this sort of rich knowledge process, we introduce a meta process that puts special emphasis on constructing and maintaining the ontology when introducing knowledge management systems. In order to elucidate our approach, we describe a case study about the building of CHAR, the Corporate History AnalyzeR.
author: id20instance
author: id57instance
author: id6instance
booktitle: Handbook on Knowledge Management. International Handbooks on Information Systems
has project: id11instance
is about: id102instance
is about: id103instance
is about: id104instance
is about: id68instance
is about: id70instance
note: 2002
pages: 47-68
title: Knowledge Processes and Meta Processes in Ontology-based Knowledge Management
year: 2003