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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Graph-Based Ontology Classification in OWL 2 QL
verfasst von : Domenico Lembo, Valerio Santarelli, Domenico Fabio Savo
Erschienen in: The Semantic Web: Semantics and Big Data
Verlag: Springer Berlin Heidelberg
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Ontology classification is the reasoning service that computes all subsumption relationships inferred in an ontology between concept, role, and attribute names in the ontology signature. OWL 2 QL is a tractable profile of OWL 2 for which ontology classification is polynomial in the size of the ontology TBox. However, to date, no efficient methods and implementations specifically tailored to OWL 2 QL ontologies have been developed. In this paper, we provide a new algorithm for ontology classification in OWL 2 QL, which is based on the idea of encoding the ontology TBox into a directed graph and reducing core reasoning to computation of the transitive closure of the graph. We have implemented the algorithm in the
QuOnto
reasoner and extensively evaluated it over very large ontologies. Our experiments show that
QuOnto
outperforms various popular reasoners in classification of OWL 2 QL ontologies.