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Solving (Weighted) Partial MaxSAT by Dynamic Local Search for SAT

机译:通过动态本地搜索解决(加权)部分MaxSAT对SAT

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Partial MaxSAT (PMS) generalizes SAT and MaxSAT by introducing hard clauses and soft clauses. PMS and Weighted PMS (WPMS) have many important real world applications. Local search is one popular method for solving (W)PMS. Recent studies on specialized local search for (W)PMS have led to significant improvements. But such specialized algorithms are complicated with the concepts tailored for hard and soft clauses. In this work, we propose a dynamic local search algorithm, which exploits the structure of (W)PMS by a carefully designed clause weighting scheme. Our solver SATLike adopts a local search framework for SAT and does not need any specialized concept for (W)PMS. Experiments on PMS and WPMS benchmarks from the MaxSAT Evaluations (MSE) 2016 and 2017 show that SATLike significantly outperforms state of the art local search solvers. Also, SATLike significantly narrows the gap between the performance of local search solvers and complete solvers on industrial benchmarks, and performs better than state of the art complete solvers on the MSE2017 benchmarks.
机译:部分MaxSAT(PMS)通过引入硬块和软条款来概括SAT和MAXSAT。 PMS和加权PMS(WPMS)具有许多重要的现实世界应用。本地搜索是解决(W)PMS的一种流行方法。最近关于专业本地搜索(W)PMS的研究导致了显着的改进。但这种专业算法与难以和软条款量身定制的概念复杂化。在这项工作中,我们提出了一种动态的本地搜索算法,该算法通过精心设计的子句加权方案来利用(W)PM的结构。我们的Solver Satlike采用SAT的本地搜索框架,不需要(W)PMS的任何专门概念。来自MaxSAT评估(MSE)2016和2017的PMS和WPMS基准的实验表明,SATLIKE明显优于艺术本地搜索求解器的态度。此外,Satlike显着缩小了本地搜索求解器的性能与工业基准上的完整求解器之间的差距,并且比MSE2017基准测试的完整求解器更好。

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