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Improving local search for structured SAT formulas via unit propagation based construct and cut initialization

  • Shaowei Cai*
  • , Chuan Luo*
  • , Xindi Zhang*
  • , Jian Zhang*
  • *此作品的通讯作者
  • CAS - Institute of Software
  • University of Chinese Academy of Sciences

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

This work is dedicated to improving local search solvers for the Boolean satisfiability (SAT) problem on structured instances. We propose a construct-and-cut (CnC) algorithm based on unit propagation, which is used to produce initial assignments for local search. We integrate our CnC initialization procedure within several state-of-the-art local search SAT solvers, and obtain the improved solvers. Experiments are carried out with a benchmark encoded from a spectrum repacking project as well as benchmarks encoded from two important mathematical problems namely Boolean Pythagorean Triple and Schur Number Five. The experiments show that the CnC initialization improves the local search solvers, leading to better performance than state-of-the-art SAT solvers based on Conflict Driven Clause Learning (CDCL) solvers.

源语言英语
主期刊名27th International Conference on Principles and Practice of Constraint Programming, CP 2021
编辑Laurent D. Michel
出版商Schloss Dagstuhl- Leibniz-Zentrum fur Informatik GmbH, Dagstuhl Publishing
ISBN(电子版)9783959772112
DOI
出版状态已出版 - 1 10月 2021
活动27th International Conference on Principles and Practice of Constraint Programming, CP 2021 - Virtual, Montpellier, 法国
期限: 25 10月 202129 10月 2021

出版系列

姓名Leibniz International Proceedings in Informatics, LIPIcs
210
ISSN(印刷版)1868-8969

会议

会议27th International Conference on Principles and Practice of Constraint Programming, CP 2021
国家/地区法国
Virtual, Montpellier
时期25/10/2129/10/21

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