The expressive power of valued constraints: hierarchies and collapses

The expressive power of valued constraints: hierarchies and collapses

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In this paper we investigate the ways in which a fixed collection of valued constraints can be combined to express other valued constraints. We show that in some cases a large class of valued constraints, of all possible arities, can be expressed by using valued constraints of a fixed finite arity....

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Bibliographic Details
Main Authors: Cohen, D, Jeavons, P, Živný, S
Format: Report
Published: Computing Laboratory‚ University of Oxford 2015
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