Consequence-based Reasoning for Description Logics with Disjunction, Inverse Roles, Number Restrictions, and Nominals

Consequence-based Reasoning for Description Logics with Disjunction, Inverse Roles, Number Restrictions, and Nominals

David Tena Cucala, Bernardo Cuenca Grau, Ian Horrocks

Proceedings of the Twenty-Seventh International Joint Conference on Artificial Intelligence
Main track. Pages 1970-1976. https://doi.org/10.24963/ijcai.2018/272

We present a consequence-based calculus for concept subsumption and classification in the description logic ALCHOIQ, which extends ALC with role hierarchies, inverse roles, number restrictions, and nominals. By using standard transformations, our calculus extends to SROIQ, which covers all of OWL 2 DL except for datatypes. A key feature of our calculus is its pay-as-you-go behaviour: unlike existing algorithms, our calculus is worst-case optimal for all the well-known proper fragments of ALCHOIQ, albeit not for the full logic.
Keywords:
Knowledge Representation and Reasoning: Automated Reasoning and Theorem Proving
Knowledge Representation and Reasoning: Description Logics and Ontologies