Méthodologie de transformation d'un thesaurus en une ontologie de domaine

Information Retrieval techniques make use of terms that are automatically extracted from documents; these terms are used to give information access. In this paper we propose an approach to enrich semantically this extraction by adding knowledge from thesauri. More specifically, the methodology we promote in this paper aims at transforming a thesaurus into a domain ontology which will then be used to semantically index documents (indexes are concepts rather than terms). We also propose techniques that implement this transformation as well as an evaluation in the field of astronomy.

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