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Faster OWL Using Split Programs Hitzler, Pascal Vrandecic, Denny OWL DL Approximate Reasoning Logic Programming We propose a new technique for approximate ABox reasoning with OWL DL ontologies. Essentially, we obtain substantially improved reasoning performance by disregarding non-Horn features of OWL DL. Our approach comes as a side-product of recent research results concerning a new transformation of OWL DL ontologies into negation-free disjunctive datalog, and rests on the idea of performing standard resolution over disjunctive rules by treating them as if they were non-disjunctive ones. We analyse our reasoning approach by means of non-monotonic reasoning techniques, and present an implementation, called Screech. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Pascal Hitzler and Denny Vrandecic 2006 Is Part Of Dagstuhl Seminar Proceedings, Volume 5371, Principles and Practices of Semantic Web Reasoning (2006) InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/DagSemProc.05371.5 urn:nbn:de:0030-drops-4803 https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.05371.5 eng https://creativecommons.org/licenses/by/4.0/legalcode