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arXiv 0902.3583math.COmath.PR
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随机k-SAT的一种改进算法

A better algorithm for random k-SAT

Amin Coja-Oghlan

摘要:

设F是n个变量m个子句的均匀分布随机k-SAT公式。我们提出了一个多项式时间算法,该算法在约束密度m/n<(1-eps_k)2^k \ln(k)/k,其中eps_k->0的情况下,以高概率找到F的满意分配.以前没有已知的有效算法来找到具有超过m/n=1.817.2^k/k的非零概率的解[Frieze and Suen,J. of Algorithms 1996]。

英文摘要:

Let F be a uniformly distributed random k-SAT formula with n variables and m clauses. We present a polynomial time algorithm that finds a satisfying assignment of F with high probability for constraint densities m/n<(1-eps_k)2^k\ln(k)/k, where eps_k->0. Previously no efficient algorithm was known to find solutions with non-vanishing probability beyond m/n=1.817.2^k/k [Frieze and Suen, J. of Algorithms 1996].

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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