Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
Hahn, U; Schulz, S.
Turning lead into gold? Feeding a formal knowledge base with informal conceptual knowledge
In: GomezPerez, A, Benjamins, VR. editors(s). KNOWLEDGE ENGINEERING AND KNOWLEDGE MANAGEMENT, PROCEEDINGS - ONTOLOGIES AND THE SEMANTIC WEB; LECTURE NOTES IN ARTIFICIAL INTELLIGENCE2473: 182-196. (ISBN: 3-540-44268-5)
Doi: 10.1007/3-540-45810-7_19
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- Co-Autor*innen der Med Uni Graz
- Schulz Stefan
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- Abstract:
- We describe an ontology engineering methodology by which conceptual knowledge is extracted from an informal medical thesaurus (UMLS) and automatically converted into a formal description logics system. Our approach consists of four steps: concept definitions are automatically generated from the UMLS source, integrity checking of taxonomic and partonomic hierarchies is performed by the terminological classifier, cycles and inconsistencies are eliminated, and incremental refinement of the evolving knowledge base is performed by a domain expert. We report on experiments with a knowledge base composed of 164,000 concepts and 76,000 relations.