{"type":"ScholarlyArticle","title":"Read-Once Resolution for Unsatisfiability-Based Max-SAT Algorithms","authors":[{"name":"Federico Heras","slug":"federico-heras","given":"Federico","family":"Heras","affiliation":""},{"name":"João P. Marques Silva","slug":"joao-p-marques-silva","given":"João P. Marques","family":"Silva","affiliation":""}],"abstract":"This paper proposes the integration of the resolution rule for Max-SAT with unsatisfiability-based Max-SAT solvers. First, we show that the resolution rule for Max-SAT can be safely applied as dictated by the resolution proof associated with an unsatisfiable core when such proof is read-once, that is, each clause is used at most once in the resolution process. Second, we study how this property can be integrated in an unsatisfiability-based solver. In particular, the resolution rule for Max-SAT is applied to read-once proofs or to read-once subparts of a general proof. Finally, we perform an empirical investigation on structured instances from recent Max-SAT evaluations. Preliminary results show that the use of read-once resolution substantially improves the performance of the solver.","doi":"10.5591/978-1-57735-516-8/IJCAI11-103","url":"https://ijcai.org/proceedings/2011/103","pdf":"https://ijcai.org/proceedings/2011/0103.pdf","markdown":"https://ijcai.org/proceedings/2011/103.md","bibtex":"https://ijcai.org/proceedings/2011/bibtex/103","volume":{"slug":"2011","title":"Proceedings of the Twenty-Second International Joint Conference on Artificial Intelligence","short_title":"IJCAI 2011","url":"https://ijcai.org/proceedings/2011/","year":2011,"location":"Barcelona, Catalonia, Spain","dates":"16–22 July 2011","editors":"Toby Walsh","isbn":"978-1-57735-512-0; 978-1-57735-513-7; 978-1-57735-514-4; 978-1-57735-515-1; 978-1-57735-516-8","publisher":"AAAI Press/International Joint Conferences on Artificial Intelligence","doi_prefix":""},"section":null,"track":"","number":103,"pages":{"first":572,"last":576},"keywords":[],"videos":[],"references":[],"license_note":"Copyright International Joint Conferences on Artificial Intelligence."}