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Erschienen in:
2008 | OriginalPaper | Buchkapitel
Variable Dependencies of Quantified CSPs
verfasst von : Marko Samer
Erschienen in: Logic for Programming, Artificial Intelligence, and Reasoning
Verlag: Springer Berlin Heidelberg
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Quantified constraint satisfaction extends classical constraint satisfaction by a linear order of the variables and an associated existential or universal quantifier to each variable. In general, the semantics of the quantifiers does not allow to change the linear order of the variables arbitrarily without affecting the truth value of the instance. In this paper we investigate variable dependencies that are caused by the influence of the relative order between these variables on the truth value of the instance. Several approaches have been proposed in the literature for identifying such dependencies in the context of quantified Boolean formulas. We generalize these ideas to quantified constraint satisfaction and present new concepts that allow a refined analysis.