First order-rewritability and containment of conjunctive queries in horn description logics

Bienvenu, M, Hansen, P, Lutz, C and Wolter, F ORCID: 0000-0002-4470-606X (2016) First order-rewritability and containment of conjunctive queries in horn description logics. In: IJCAI, 2016-7-10 - 2016-7-20, New York.

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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.

Item Type:	Conference Item (Unspecified)
Uncontrolled Keywords:	cs.AI, cs.AI, cs.DB
Depositing User:	Symplectic Admin
Date Deposited:	30 Nov 2017 08:48
Last Modified:	09 Jun 2025 14:35
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3013189