The expressive power of valued constraints: Hierarchies and collapses.

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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Hlavní autoři: Cohen, D, Jeavons, P, Zivny, S
Médium: Journal article
Jazyk:English
Vydáno: 2008