Computer Science – Artificial Intelligence
Scientific paper
2011-04-26
Computer Science
Artificial Intelligence
Scientific paper
A natural and established way to restrict the constraint satisfaction problem is to fix the relations that can be used to pose constraints; such a family of relations is called a constraint language. In this article, we study arc consistency, a heavily investigated inference method, and three extensions thereof from the perspective of constraint languages. We conduct a comparison of the studied methods on the basis of which constraint languages they solve, and we present new polynomial-time tractability results for singleton arc consistency, the most powerful method studied.
Chen Hubie
Dalmau Víctor
Grußien Berit
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