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Approximation of Relations by Propositional Formulas: Complexity and Semantics

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Abstraction, Reformulation, and Approximation (SARA 2002)

Part of the book series: Lecture Notes in Computer Science ((LNAI,volume 2371))

Abstract

Selman and Kautz introduced the notion of approximation of a theory and showed its usefulness for knowledge compilation and on-line reasoning. We study here the complexity of the main computational problems related to the approximation of relations (sets of possible worlds) by propositional formulas, and the semantics of reasoning with these approximations (deduction and abduction). The classes of formulas that we consider are those of (reverse-)Horn, bijunctive and affine formulas, which are the most interesting for storing knowledge.

Concerning the computation of approximations, we survey and complete the results that can be found in the literature, trying to adopt a unified point of view. On the contrary, as far as we know this paper is the first real attempt to study the semantics of abduction with the bounds of a theory.

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Author information

Authors and Affiliations

  1. GREYC, Université de Caen, bd. Mal Juin, F-14032, Caen Cedex, France

    Bruno Zanuttini

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  1. Bruno Zanuttini
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Editor information

Editors and Affiliations

  1. College of Computing, Georgia Institute of Technology, 801 Atlantic Dr NW, Atlanta, GA, 30332-0280, USA

    Sven Koenig

  2. Department of Computing Science, Universtity of Alberta, 2-21 Athabasca Hall, Edmonton, Alberta, T6G 2E8, Canada

    Robert C. Holte

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Zanuttini, B. (2002). Approximation of Relations by Propositional Formulas: Complexity and Semantics. In: Koenig, S., Holte, R.C. (eds) Abstraction, Reformulation, and Approximation. SARA 2002. Lecture Notes in Computer Science(), vol 2371. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-45622-8_18

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  • DOI: https://doi.org/10.1007/3-540-45622-8_18

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-43941-7

  • Online ISBN: 978-3-540-45622-3

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