Exploiting Inference Rules to Compute Lower Bounds for MAX-SAT Solving
MetadataShow full item record
In this paper we present a general logical framework for (weighted) MAX-SAT problem, and study properties of inference rules for branch and bound MAX-SAT solver. Several rules, which are not equivalent but ?-equivalent, are proposed, and we show that ?-equivalent rules are also sound. As an example, we show how to exploit inference rules to achieve a new lower bound function for a MAX-2-SAT solver. Our new function is admissible and consistently better than the well-known lower bound function. Based on the study of inference rules, we implement an efficient solver and the experimental results demonstrate that our solver outperforms the most efficient solver that has been implemented very recently [Heras and Larrosa, 2006], especially for large instances.
Copyright 2007 International Joint Conference on Artificial Intelligence. The attached file is reproduced here in accordance with the copyright policy of the publisher. Please refer to the Conference's website for access to the definitive, published version.