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Solving weighted CSP by maintaining arc consistency

机译:通过保持电弧一致性来解决加权CSP

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Recently, a general definition of arc consistency (AC) for soft constraint frameworks has been proposed by T. Schiex [Proc. CP-2000, Singapore, 2000, pp. 411-424]. In this paper we specialize this definition to weighted CSP and introduce two O(ed(3)) enforcing algorithms. Then, we refine the definition and introduce a stronger form of arc consistency (AC*) along with two O(n(2)d(2) + ed(3)) algorithms. As in the CSP case, an important application of AC is to combine it with search. We empirically demonstrate that a branch and bound algorithm that maintains either AC or AC* is a state-of-the-art general solver for weighted CSP Our experiments cover binary Max-CSP and Max-SAT problems. (C) 2004 Published by Elsevier B.V.
机译:近来,T.Schiex [Proc.Natl.Acad.Sci.USA,87:3587-8877]提出了用于软约束框架的电弧一致性(AC)的一般定义。 CP-2000,新加坡,2000,第411-424页]。在本文中,我们将此定义专门用于加权CSP,并介绍了两种O(ed(3))强制执行算法。然后,我们完善定义并引入更强形式的电弧一致性(AC *)以及两种O(n(2)d(2)+ ed(3))算法。与CSP情况一样,AC的重要应用是将其与搜索结合起来。我们凭经验证明,保持AC或AC *的分支定界算法是加权CSP的最新通用求解器。我们的实验涵盖了二进制Max-CSP和Max-SAT问题。 (C)2004由Elsevier B.V.发布

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