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A randomized diversification strategy for solving satisfiability problem with long clauses

delete2017-05-11
delete10
PRE
AI
J
Jian Gao
R
Ruizhi Li
M
Minghao Yin *
DOI:10.1007/s11432-016-0258-4delete
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Abstract

Abstract

En 中文
Satisfiability problem (SAT) is a central problem in artificial intelligence due to its computational complexity and usefulness in industrial applications. Stochastic local search (SLS) algorithms are powerful to solve hard instances of satisfiability problems, among which CScoreSAT is proposed for solving SAT instances with long clauses by using greedy mode and diversification mode. In this paper, we present a randomized variable selection strategy to improve efficiency of the diversification mode, and thus propose a new SLS algorithm. We perform a number of experiments to evaluate the new algorithm comparing with the recently proposed algorithms, and show that our algorithm is comparative with others for solving random instances near the phase transition threshold.
Keywords:
SAT
local search
randomized diversification strategy
phase transition
long clause
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Journal

Science China Information Sciences cover
Science China Information Sciences
IF:
7.6
Papers:
4.9K
Citations:
8.9K

Organization

N
northeast normal university - china
Scholars:
1.2W
Papers: 9.2K
Citations: 23