Conjunctive query answering in the description logic EL using a relational database system
IJCAI（2009）
摘要
Conjunctive queries (CQ) are fundamental for accessing description logic (DL) knowledge bases. We study CQ answering in (extensions of) the DL EL, which is popular for large-scale ontologies and underlies the designated OWL2-EL profile of OWL2. Our main contribution is a novel approach to CQ answering that enables the use of standard relational database systems as the basis for query execution. We evaluate our approach using the IBM DB2 system, with encouraging results.
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关键词
large-scale ontology,conjunctive query answering,novel approach,relational database system,ibm db2 system,knowledge base,cq answering,encouraging result,owl2-el profile,conjunctive query,description logic el,accessing description logic,dl el,owl,conjunctive queries,databases,description logic,database system
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