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Most Influential IJCAI 2009 Paper · 2026-03 edition

Conjunctive Query Answering In The Description Logic EL Using A Relational Database System

Carsten Lutz; David Toman; David Toman; Frank Wolter; Frank Wolter

Venue
International Joint Conference on Artificial Intelligence (IJCAI) 2009
Recognition
Most Influential IJCAI 2009 Paper (Rank No. 11)
Edition
2026-03
Impact factor
5
Certificate ID
d2ed2677739fb45b

Abstract

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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