Pushing the Boundaries of Tractable Ontology Reasoning

author: David Carral, Kno.e.sis, Wright State University
published: Dec. 19, 2014,   recorded: October 2014,   views: 2111


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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.

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