A New Algorithm for Parameterized MAX-SAT
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- Bliznets I., Golovnev A. (2012) A New Algorithm for Parameterized MAX-SAT. In: Thilikos D.M., Woeginger G.J. (eds) Parameterized and Exact Computation. IPEC 2012. Lecture Notes in Computer Science, vol 7535. Springer, Berlin, Heidelberg
We show how to check whether at least k clauses of an input formula in CNF can be satisfied in time O*(1.358k). This improves the bound O*(1.370k) proved by Chen and Kanj more than 10 years ago. Though the presented algorithm is based on standard splitting techniques its core are new simplification rules that often allow to reduce the size of case analysis. Our improvement is based on a simple algorithm for a special case of MAX-SAT where each variable appears at most 3 times.
Keywordsexact algorithms maximum satisfiability parameterized algorithms satisfiability
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