Divide and conquer: Towards faster pseudo-boolean solving
2018 (English)In: IJCAI'18: Proceedings of the 27th International Joint Conference on Artificial Intelligence, International Joint Conferences on Artificial Intelligence , 2018, p. 1291-1299Conference paper, Published paper (Refereed)
Abstract [en]
The last 20 years have seen dramatic improvements in the performance of algorithms for Boolean satisfiability-so-called SAT solvers-and today conflict-driven clause learning (CDCL) solvers are routinely used in a wide range of application areas. One serious short-coming of CDCL, however, is that the underlying method of reasoning is quite weak. A tantalizing solution is to instead use stronger pseudo-Boolean (PB) reasoning, but so far the promise of exponential gains in performance has failed to materialize-the increased theoretical strength seems hard to harness algorithmically, and in many applications CDCL-based methods are still superior. We propose a modified approach to pseudo-Boolean solving based on division instead of the saturation rule used in [Chai and Kuehlmann'05] and other PB solvers. In addition to resulting in a stronger conflict analysis, this also improves performance by keeping integer coefficient sizes down, and yields a very competitive solver as shown by the results in the Pseudo-Boolean Competitions 2015 and 2016.
Place, publisher, year, edition, pages
International Joint Conferences on Artificial Intelligence , 2018. p. 1291-1299
Series
IJCAI International Joint Conference on Artificial Intelligence, ISSN 1045-0823
Keywords [en]
Application area, Boolean satisfiability, Conflict analysis, Divide and conquer, Exponential gain, Integer coefficient, Performance of algorithm, Theoretical strength, Artificial intelligence
National Category
Computer Systems
Identifiers
URN: urn:nbn:se:kth:diva-314582DOI: 10.24963/ijcai.2018/180ISI: 000764175401060Scopus ID: 2-s2.0-85049675778OAI: oai:DiVA.org:kth-314582DiVA, id: diva2:1674948
Conference
27th International Joint Conference on Artificial Intelligence, IJCAI 2018, 13 July 2018 through 19 July 2018, Stockholm, Sweden
Note
QC 20220622
Part of proceedings: ISBN 978-099924112-7
2022-06-222022-06-222022-06-25Bibliographically approved