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Ontobroker: Ontology Based Access to Distributed and Semi-Structured Information




Published: 1999
Herausgeber: R. Meersman et al.
Buchtitel: Database Semantics: Semantic Issues in Multimedia Systems, Proceedings TC2/WG 2.6 8th Working Conference on Database Semantics (DS-8), Rotorua, New Zealand
Verlag: Kluwer Academic Publishers, Boston
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Kurzfassung
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.

Download: Media:1999_551_Decker_Ontobroker_Ont_1.pdf,Media:1999_551_Decker_Ontobroker_Ont_1.ps



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