Literatur zur Informationserschließung

Diese Datenbank enthält über 40.000 Dokumente zu Themen aus den Bereichen Formalerschließung – Inhaltserschließung – Information Retrieval.

© 2015 W. Gödert, TH Köln, Institut für Informationswissenschaft / Powered by litecat, BIS Oldenburg (Stand: 28. April 2022)

Suchergebnisse

• 1
  Bruijn, J. de ; Fensel, D.: Ontologies and their definition.
  In: Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates. London : Taylor & Francis, 2009. S.3997-4007.
  
  Abstract: This entry introduces ontologies as a potential "silver bullet" for knowledge management, enterprise application integration, and e-commerce. Ontologies enable knowledge sharing and knowledge reuse. The degree to which an ontology is machine-understandable, its formality, is determined by the language used for the specification of the ontology. There exists a trade-off between the expressiveness of an ontology language and the modeling support it provides for the ontology developer. This entry also describes how different knowledge representation formalisms, together with the Web languages XML and RDF, have influenced the development of the Web ontology language OWL.
  
  Inhalt: Digital unter: http://dx.doi.org/10.1081/E-ELIS3-120039479. Vgl.: http://www.tandfonline.com/doi/book/10.1081/E-ELIS3.
  
  Themenfeld: Wissensrepräsentation
  
  
• 2
  Fensel, D.: Ontologies : a silver bullet for knowledge management and electronic commerce.2nd ed., rev. and extended.
  Berlin : Springer, 2004. X, 162 S.
  ISBN 3-540-00302-0
  
  Abstract: The author systematically introduces the notion of ontologies to the non-expert reader and demonstrates in detail how to apply this conceptual framework for improved intranet retrieval of corporate information and knowledge and for enhanced Internetbased electronic commerce. He also describes ontology languages (XML, RDF, and OWL) and ontology tools, and the application of ontologies. In addition to structural improvements, the second edition covers recent developments relating to the Semantic Web, and emerging web-based standard languages.
  
  Themenfeld: Information Resources Management
  
  LCSH: Database management ; Electronic commerce ; Semantic Web
  RSWK: Wissenstechnik / Inferenz ; World Wide Web / Datenbanksystem / Abfrage / Inferenz ; Electronic Commerce / Agent / XML
  DDC: 005.74 ; 004.67/8 22
  LCC: QA76.9.D3F46 2003
  RVK: ST 300 Informatik / Monographien / Künstliche Intelligenz / Allgemeines ; ST 304 Informatik / Monographien / Künstliche Intelligenz / Automatisches Programmieren, Deduction and theorem proving, Wissensrepräsentation ; QP 345 Wirtschaftswissenschaften / Allgemeine Betriebswirtschaftslehre / Unternehmensführung / Organisation / Informationswesen. Informationssysteme
  
• 3
  Fensel, D. ; Staab, S. ; Studer, R. ; Harmelen, F. van ; Davies, J.: ¬A future perspective : exploiting peer-to-peer and the Semantic Web for knowledge management.
  In: Towards the semantic Web: ontology-driven knowledge management. Eds.: J. Davies, u.a. Chichester : Wiley, 2004. S.245-264.
  
  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. In this chapter, we describe our vision in terms of a set of future steps that need to be taken to bring the results described in earlier chapters to their full potential.
  
  Themenfeld: Wissensrepräsentation ; Semantic Web
  Anwendungsfeld: Informationswirtschaft
  
  
• 4
  Fensel, D. ; Harmelen, F. van ; Horrocks, I.: OIL and DAML+OIL : ontology languages for the Semantic Web.
  In: Towards the semantic Web: ontology-driven knowledge management. Eds.: J. Davies, u.a. Chichester : Wiley, 2004. S.11-31.
  
  Abstract: This chapter discusses OIL and DAML1OIL, currently the most prominent ontology languages for the Semantic Web. The chapter starts by discussing the pyramid of languages that underlie the architecture of the Semantic Web (XML, RDF, RDFS). In section 2.2, we briefly describe XML, RDF and RDFS. We then discuss in more detail OIL and DAML1OIL, the first proposals for languages at the ontology layer of the semantic pyramid. For OIL (and to some extent DAML1OIL) we discuss the general design motivations (Section 2.3), describe the constructions in the language (Section 2.4), and the various syntactic forms of these languages (Section 2.5). Section 2.6 discusses the layered architecture of the language, section 2.7 briefly mentions the formal semantics, section 2.8 discusses the transition from OIL to DAML+OIL, and section 2.9 concludes with our experience with the language to date and future development in the context of the World Wide Web Consortium (W3C). This chapter is not intended to give full and formal definitions of either the syntax or the semantics of OIL or DAML1OIL. Such definitions are already available elsewhere: http://www.ontoknowledge.org/oil/ for OIL and http://www.w3.org/submission/2001/12/ for DAML1OIL.
  
  Themenfeld: Semantic Web ; Wissensrepräsentation
  Objekt: DAML ; OIL
  
  
• 5
  Klein, M. ; Ding, Y. ; Fensel, D. ; Omelayenko, B.: Ontology management : storing, aligning and maintaining ontologies.
  In: Towards the semantic Web: ontology-driven knowledge management. Eds.: J. Davies, u.a. Chichester : Wiley, 2004. S.47-69.
  
  Abstract: Ontologies need to be stored, sometimes aligned and their evolution needs to be managed. All these tasks together are called ontology management. Alignment is a central task in ontology re-use. Re-use of existing ontologies often requires considerable effort: the ontologies either need to be integrated, which means that they are merged into one new ontology, or the ontologies can be kept separate. In both cases, the ontologies have to be aligned, which means that they have to be brought into mutual agreement. The problems that underlie the difficulties in integrating and aligning are the mismatches that may exist between separate ontologies. Ontologies can differ at the language level, which can mean that they are represented in a different syntax, or that the expressiveness of the ontology language is dissimilar. Ontologies also can have mismatches at the model level, for example, in the paradigm, or modelling style. Ontology alignment is very relevant in a Semantic Web context. The Semantic Web will provide us with a lot of freely accessible domain specific ontologies. To form a real web of semantics - which will allow computers to combine and infer implicit knowledge - those separate ontologies should be aligned and linked. ; Support for evolving ontologies is required in almost all situations where ontologies are used in real-world applications. In those cases, ontologies are often developed by several persons and will continue to evolve over time, because of changes in the real world, adaptations to different tasks, or alignments to other ontologies. To prevent that such changes will invalidate existing usage, a change management methodology is needed. This involves advanced versioning methods for the development and the maintenance of ontologies, but also configuration management, that takes care of the identification, relations and interpretation of ontology versions. All these aspects come together in integrated ontology library systems. When the number of different ontologies is increasing, the task of storing, maintaining and re-organizing them to secure the successful re-use of ontologies is challenging. Ontology library systems can help in the grouping and reorganizing ontologies for further re-use, integration, maintenance, mapping and versioning. Basically, a library system offers various functions for managing, adapting and standardizing groups of ontologies. Such integrated systems are a requirement for the Semantic Web to grow further and scale up. In this chapter, we describe a number of results with respect to the above mentioned areas. We start with a description of the alignment task and show a meta-ontology that is developed to specify the mappings. Then, we discuss the problems that are caused by evolving ontologies and describe two important elements of a change management methodology. Finally, in Section 4.4 we survey existing library systems and formulate a wish-list of features of an ontology library system.
  
  Themenfeld: Wissensrepräsentation
  
  
• 6
  Davies, J. ; Fensel, D. ; Harmelen, F. van: Conclusions: ontology-driven knowledge management : towards the Semantic Web?.
  In: Towards the semantic Web: ontology-driven knowledge management. Eds.: J. Davies, u.a. Chichester : Wiley, 2004. S.265-266.
  
  Abstract: The global economy is rapidly becoming more and more knowledge intensive. Knowledge is now widely recognized as the fourth production factor, on an equal footing with the traditional production factors of labour, capital and materials. Managing knowledge is as important as the traditional management of labour, capital and materials. In this book, we have shown how Semantic Web technology can make an important contribution to knowledge management.
  
  Themenfeld: Wissensrepräsentation ; Semantic Web
  
  
• 7
  Fensel, D.: Ontologies : a silver bullet for knowledge management and electronic commerce.
  Berlin : Springer, 2001. IX,138 S.
  ISBN 3-540-41602-1
  
  Abstract: Ontologies have been developed and investigated for quite a while now in artificial intelligente and natural language processing to facilitate knowledge sharing and reuse. More recently, the notion of ontologies has attracied attention from fields such as intelligent information integration, cooperative information systems, information retrieval, electronic commerce, and knowledge management. The author systematicaliy introduces the notion of ontologies to the non-expert reader and demonstrates in detail how to apply this conceptual framework for improved intranet retrieval of corporate information and knowledge and for enhanced Internet-based electronic commerce. In the second part of the book, the author presents a more technical view an emerging Web standards, like XML, RDF, XSL-T, or XQL, allowing for structural and semantic modeling and description of data and information.
  
  Themenfeld: Information Resources Management
  
  LCSH: Database management ; Electronic commerce ; Semantic Web
  RSWK: Wissenstechnik / Inferenz ; World Wide Web / Datenbanksystem / Abfrage / Inferenz ; Electronic Commerce / Agent / XML ; Datenbankverwaltung / Ontologie (BVB) ; Ontologie / Wissensmanagement / Electronic Commerce (BVB)
  BK: 54.72 / Künstliche Intelligenz
  DDC: 005.74 21 ; 004.678
  LCC: QA76.9.D3F46 2001
  RVK: QP 345 Wirtschaftswissenschaften / Allgemeine Betriebswirtschaftslehre / Unternehmensführung / Organisation / Informationswesen. Informationssysteme ; QP 650 ; ST 300