Pushing the Boundaries of Tractable Ontology Reasoning

TitlePushing the Boundaries of Tractable Ontology Reasoning
Publication TypeConference Papers
Year of Publication2014
AuthorsCarral, D, Feier, C, Grau, BCuenca, Hitzler, P, Horrocks, I
Conference NameThe Semantic Web - ISWC 2014 - 13th International Semantic Web Conference, Riva del Garda, Italy, October 19-23, 2014. Proceedings, Part II
Keywordsdescription logics, OWL, Tractable Reasoning

We identify a class of Horn ontologies for which standard reasoning tasks such as instance checking and classification are tractable. The class is general enough to include the OWL 2 EL, QL, and RL profiles. Verifying whether a Horn ontology belongs to the class can be done in polynomial time. We show empirically that the class includes many real-world ontologies that are not included in any OWL 2 profile, and thus that polynomial time reasoning is possible for these ontologies.