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Complexity of Inconsistency-Tolerant Query Answering in Datalog+/–

  • Conference paper
On the Move to Meaningful Internet Systems: OTM 2013 Conferences (OTM 2013)

Part of the book series: Lecture Notes in Computer Science ((LNISA,volume 8185))

Abstract

The study of inconsistency-tolerant semantics for query answering in ontological languages has recently gained much attention. In this work, we consider three inconsistency-tolerant semantics recently proposed in the literature, namely: consistent query answering, the intersection (also called IAR) semantics, and the intersection of closed repairs (ICR) semantics. We study the data complexity of conjunctive query answering under these semantics for a wide set of tractable fragments of Datalog+/–. The Datalog+/– family of ontology languages covers several important description logics (DLs), bridging the gap in expressive power between database query languages and DLs as ontology languages, and extending the well-known Datalog language in order to embed DLs. Its properties of decidability of query answering and of tractability of query answering in the (data) complexity make Datalog+/– very useful in modeling real-world applications in which inconsistency-tolerant reasoning is essential.

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Authors and Affiliations

  1. Department of Computer Science, University of Oxford, UK

    Thomas Lukasiewicz, Maria Vanina Martinez & Gerardo I. Simari

Authors
  1. Thomas Lukasiewicz
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  2. Maria Vanina Martinez
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  3. Gerardo I. Simari
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Editor information

Editors and Affiliations

  1. STAR Lab, Vrije Universiteit Brussel, Bldg G/10, Pleinlaan 2, 1050, Brussels, Belgium

    Robert Meersman

  2. CRAN, University of Lorraine, Campus Sciences, BP 70239, 54506, Vandoevre-les-Nancy, France

    Hervé Panetto

  3. Computer Science and Computer Engineering, La Trobe University, 3086, Melbourne, Victoria, Australia

    Tharam Dillon

  4. Dept. of Informatics Systems, University of Klagenfurt, Universitaetsstrasse 65, 9020, Klagenfurt, Austria

    Johann Eder

  5. LIRMM, University of Montpellier II, 161 Rue Ada, 34392, Montpellier Cedex 5, France

    Zohra Bellahsene

  6. Department of Informatics, University of Hamburg, 22527, Hamburg, Germany

    Norbert Ritter

  7. Department of Computer Sciences, VU University Amsterdam, De Boelelaan 1081, 1081 HV, Amsterdam, The Netherlands

    Pieter De Leenheer

  8. Computer and Information Science Department, University of Oregon, 97403, Eugene, OR, USA

    Deijing Dou

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Lukasiewicz, T., Martinez, M.V., Simari, G.I. (2013). Complexity of Inconsistency-Tolerant Query Answering in Datalog+/–. In: Meersman, R., et al. On the Move to Meaningful Internet Systems: OTM 2013 Conferences. OTM 2013. Lecture Notes in Computer Science, vol 8185. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-41030-7_35

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  • DOI: https://doi.org/10.1007/978-3-642-41030-7_35

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-41029-1

  • Online ISBN: 978-3-642-41030-7

  • eBook Packages: Computer ScienceComputer Science (R0)

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