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arXiv 1505.06802cond-mat.dis-nncond-mat.stat-mechcs.CC
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增长域随机约束满足问题的解空间结构

Solution space structure of random constraint satisfaction problems with growing domains

Wei Xu, Pan Zhang, Tian Liu, Fuzhou Gong

摘要:

本文研究了增长域约束满足问题(CSP)的标准原型RB模型的解空间结构。利用严格的一阶矩和二阶矩方法,证明了在可解阶段接近可满足性转变时,解被聚成指数数量的良好分离的簇,每个簇包含次指数数量的解.因此,该系统有一个集群(动力学)过渡,但没有凝聚过渡。这种相图不同于其他经典的固定区域大小的随机CSP,如随机K-可满足性(K-SAT)和图着色问题,其中存在凝聚转移,并且不同于可满足性转移。我们的结果验证了自旋玻璃理论中腔方法的非严格结果,并揭示了大量态问题解空间的结构.

英文摘要:

In this paper we study the solution space structure of model RB, a standard prototype of Constraint Satisfaction Problem (CSPs) with growing domains. Using rigorous the first and the second moment method, we show that in the solvable phase close to the satisfiability transition, solutions are clustered into exponential number of well-separated clusters, with each cluster contains sub-exponential number of solutions. As a consequence, the system has a clustering (dynamical) transition but no condensation transition. This picture of phase diagram is different from other classic random CSPs with fixed domain size, such as random K-Satisfiability (K-SAT) and graph coloring problems, where condensation transition exists and is distinct from satisfiability transition. Our result verifies the non-rigorous results obtained using cavity method from spin glass theory, and sheds light on the structures of solution spaces of problems with a large number of states.

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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