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Theoretically optimal datalog rewritings for OWL 2 QL ontology-mediated queries

Bienvenu, M. and Kikot, Stanislav and Kontchakov, Roman and Podolskii, V. and Zakharyaschev, Michael (2016) Theoretically optimal datalog rewritings for OWL 2 QL ontology-mediated queries. In: UNSPECIFIED (ed.) Proceedings of the 29th International Workshop on Description Logics. CEUR-WS.

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Abstract

We show that, for OWL2QL ontology-mediated queries with (i) ontologies of bounded depth and conjunctive queries of bounded treewidth, (ii) ontologies of bounded depth and bounded-leaf tree-shaped conjunctive queries, and (iii) arbitrary ontologies and bounded-leaf tree-shaped conjunctive queries, one can construct and evaluate nonrecursive datalog rewritings by, respectively, LOGCFL, NL and LOGCFL algorithms, which matches the optimal combined complexity.

Metadata

Item Type: Book Section
Additional Information: Cape Town, South Africa, April 22-25, 2016. ISSN: 1613-0073
School: Birkbeck Faculties and Schools > Faculty of Science > School of Computing and Mathematical Sciences
Depositing User: Roman Kontchakov
Date Deposited: 25 May 2016 14:36
Last Modified: 13 Jul 2025 18:08
URI: https://eprints.bbk.ac.uk/id/eprint/15317

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