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Polynomial Algorithms for Computing a Single Preferred Assertional-Based Repair

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Abstract

This paper investigates different approaches for handling inconsistent DL-Lite knowledge bases in the case where the assertional base is prioritized and inconsistent with the terminological base. The inconsistency problem often happens when the assertions are provided by multiple conflicting sources having different reliability levels. We propose different inference strategies based on the selection of one consistent assertional base, called a preferred repair. For each strategy, a polynomial algorithm for computing the associated single preferred repair is proposed. Selecting a unique repair is important since it allows an efficient handling of queries. We provide experimental studies showing (from a computational point of view) the benefits of selecting one repair when reasoning under inconsistency in lightweight knowledge bases.

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Notes

  1. Positive inclusion axioms are of the form \(B_1\sqsubseteq B_2.\)

  2. Available at: https://code.google.com/p/combo-obda/.

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Acknowledgements

The authors would like to thank referees for their useful remarks and comments. This work has received support from the European project H2020 Marie Sklodowska-Curie Actions (MSCA) research and Innovation Staff Exchange (RISE): AniAge (High Dimensional Heterogeneous Data based Animation Techniques for Southeast Asian Intangible Cultural Heritage Digital Content), Project Number 691215.

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Authors and Affiliations

  1. Artois University-Nord de France, CRIL CNRS UMR 8188, Artois, 62307, Lens, France

    Abdelmoutia Telli, Salem Benferhat & Karim Tabia

  2. Cardiff University, Cardiff, UK

    Zied Bouraoui

  3. Mohamed Khider University of Biskra, BP 145 RP, 07000, Biskra, Algeria

    Abdelmoutia Telli

  4. University of M’sila, BP 166 RP, 28000, M’sila, Algeria

    Mustapha Bourahla

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  1. Abdelmoutia Telli
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  2. Salem Benferhat
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  3. Mustapha Bourahla
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  4. Zied Bouraoui
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  5. Karim Tabia
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Correspondence to Salem Benferhat.

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Telli, A., Benferhat, S., Bourahla, M. et al. Polynomial Algorithms for Computing a Single Preferred Assertional-Based Repair. Künstl Intell 31, 15–30 (2017). https://doi.org/10.1007/s13218-016-0466-4

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