A Fast Approximation Algorithm for MIN-ONE SAT

Lei Fang, Michael S. Hsiao
2008 2008 Design, Automation and Test in Europe  
In this paper, we propose a novel approximation algorithm (Re-laxSAT) for MIN-ONE SAT. RelaxSAT generates a set of constraints from the objective function to guide the search. The constraints are gradually relaxed to eliminate the conflicts with the original Boolean SAT formula until a solution is found. The experiments demonstrate that RelaxSAT is able to handle very large instances which cannot be solved by existing MIN-ONE algorithms; furthermore, very tight bounds on the solution were obtained with one to two orders of magnitude speedup.
doi:10.1109/date.2008.4484921 dblp:conf/date/FangH08 fatcat:66q2w7chfzbs5d4bcwivuadtmi