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arXiv 0704.3683cs.CCmath.CO
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加权布尔型CSP的复杂性

The Complexity of Weighted Boolean #CSP

Martin Dyer, Leslie Ann Goldberg, Mark Jerrum

摘要:

本文给出了加权布尔约束满足问题实例的配分函数计算复杂性的一个二分法。该问题由非负函数的有限集合F参数化,该非负函数可以用于将权重分配给问题实例的配置(可行解)。经典的约束满足问题对应于0,1值函数的特殊情况。我们证明了配分函数,即所有配置的权重之和,可以在多项式时间内计算,如果(1)F中的每个函数都是"乘积型“,或(2)F中的每个函数都是"纯仿射”。对于每一个其他的固定集合F,计算配分函数是FP^{#P}-完全的。

英文摘要:

This paper gives a dichotomy theorem for the complexity of computing the partition function of an instance of a weighted Boolean constraint satisfaction problem. The problem is parameterised by a finite set F of non-negative functions that may be used to assign weights to the configurations (feasible solutions) of a problem instance. Classical constraint satisfaction problems correspond to the special case of 0,1-valued functions. We show that the partition function, i.e. the sum of the weights of all configurations, can be computed in polynomial time if either (1) every function in F is of ``product type'', or (2) every function in F is ``pure affine''. For every other fixed set F, computing the partition function is FP^{#P}-complete.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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