A New Branching Heuristic for Propositional Satisfiability

被引:0
|
作者
Zhao, Yujuan [1 ]
Song, Zhenming [1 ]
机构
[1] Southwest Jiaotong Univ, Sch Math, Chengdu 611756, Sichuan, Peoples R China
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中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
A new algorithm of selecting branch variable is proposed,which is based on the research of propositional satisfiability algorithm. Firstly, the clause set is divided into three groups according to the length of the clause. Secondly,considering the relationship between the clause and literal dynamically and a heuristic function is defined,whose purpose is that literal has maximum function value will be selected. Examples show that the new algorithm can reduce the unnecessary search space,,then the efficiency of the whole solving is improved effectively.
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页数:3
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