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Conference Papers Year : 2016

First Order-Rewritability and Containment of Conjunctive Queries in Horn Description Logics

Abstract

We study FO-rewritability of conjunctive queries in the presence of ontologies formulated in a description logic between EL and Horn-SHIF, along with related query containment problems. Apart from providing characterizations, we establish complexity results ranging from EXPTIME via NEXPTIME to 2EXPTIME, pointing out several interesting effects. In particular, FO-rewriting is more complex for conjunctive queries than for atomic queries when inverse roles are present, but not otherwise.
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Dates and versions

lirmm-01367863 , version 1 (16-09-2016)

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  • HAL Id : lirmm-01367863 , version 1

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Meghyn Bienvenu, Peter Hansen, Carsten Lutz, Frank Wolter. First Order-Rewritability and Containment of Conjunctive Queries in Horn Description Logics. IJCAI: International Joint Conference on Artificial Intelligence, Jul 2016, New York, United States. ⟨lirmm-01367863⟩
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