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Logic Journal of IGPL Advance Access published online on November 6, 2009
Logic Journal of IGPL, doi:10.1093/jigpal/jzp056
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© The Author 2009. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Combining totalitarian and Ceteris Paribus semantics in database preference queries

Rui da Silva Neves

CLLE, MDR, Université Toulouse-II, 5 Allées Machado, 31058 Toulouse Cedex 9, France.
E-mail: neves{at}univ-tlse2.fr

Souhila Kaci

Université Lille-Nord de France, Artois, CRIL, CNRS UMR 8188 - IUT de Lens, F-62307, France.
E-mail: kaci{at}cril.fr


  Abstract

Preference queries from databases aim to retrieve the best answers w.r.t. user's requirements. The integration of preferences in database queries has known many advances in the last decade. Most of works however are based on comparative preference statements obeying more or less strong semantics. Representing and reasoning about comparative preference statements has also been widely investigated in Artificial Intelligence. In this paper, we bridge the two frameworks and develop a simple and unified framework to reason about preferences in database queries. Our framework is based on insights from non-monotonic reasoning.

Key Words: Preferences • database queries


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