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  • 2010-2014  (1)
  • 2005-2009  (3)
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  • 2010-2014  (1)
  • 2005-2009  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Bingley : Emerald
    Journal of knowledge management 9 (2005), S. 85-96 
    ISSN: 1367-3270
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Information Science and Librarianship
    Notes: Purpose - Aims to present the ontology engineering methodology DILIGENT, a methodology focussing on the evolution of ontologies instead of the initial design, thus recognizing that knowledge is a tangible and moving target. Design/methodology/approach - First describes the methodology as a whole, then detailing one of the five main steps of DILIGENT. The second part describes case studies, either already performed or planned, and what we learned (or expect to learn) from them. Findings - With the case studies it was discovered the strengths and weaknesses of DILIGENT. During the evolution of ontologies, arguments need to be exchanged about the suggested changes. Identifies those kind of arguments which work best for the discussion of ontology changes. Research implications - DILIGENT recognizes ontology engineering methodologies like OnToKnowledge or Methontology as proven useful for the initial design, but expands them with its strong focus on the user-centric further development of the ontology and the provided integration of automatic agents in the process of ontology evolution. Practical implications - With DILIGENT the experience distilled from a number of case studies and offers the knowledge manager a methodology to work in an ever-changing environment. Originality/value - DILIGENT is the first methodology to put focus not on the initial development of the ontology, but on the user and his usage of the ontology, and on the changes introduced by the user. We take the user's own view seriously and enable feedback towards the evolution of the ontology, stressing the ontology's role as a shared conceptualisation.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Bingley : Emerald
    Journal of knowledge management 9 (2005), S. 97-107 
    ISSN: 1367-3270
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Information Science and Librarianship
    Notes: Purpose - 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. Design/methodology/approach - 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. Findings - The proposed framework for ontology ontology evolution, which is currently applied and evaluated in the case studies, significantly reduces the costs of ontology updates and improves the quality of the ontology with respect to the users' requirements. Practical implications - The management of dynamic knowledge is crucial for many knowledge management applications. Our approach for usage-driven and data-driven change discovery not only assures the consistency of ontologies modeling dynamic knowledge, but also reduces the burden of manual ontology engineering. Originality/value - This paper presents the first approach towards a common framework for ontology evolution based on usage-driven and data-driven change discovery.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Bingley : Emerald
    Library management 26 (2005), S. 190-195 
    ISSN: 0143-5124
    Source: Emerald Fulltext Archive Database 1994-2005
    Topics: Information Science and Librarianship
    Notes: Purpose - The purpose of this article is to provide 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. Design/methodology/approach - 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. Findings - Semantic Web technologies are valuable add-ons for digital libraries. There already exist numerous academic and commercial tools which can be applied right now. Practical limitations/implications - The overview of Semantic Web technologies cannot be complete in such an article, therefore we limit ourselves to the most prominent technologies available. However, following the pointers given readers can easily find more information. Originality/value - The article is of particular value for newcomers in this area.
    Type of Medium: Electronic Resource
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  • 4
    Title: Semantic Web : Grundlagen
    Author: Hitzler, Pascal
    Contributer: Krötzsch, Markus , Rudoplph, Sebastian , Sure, York
    Publisher: Berlin :Springer,
    Year of publication: 2010
    Pages: 277 S.
    ISBN: 978-3-540-33993-9
    Type of Medium: Book
    Language: German
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