Counting for Satisfiability by Inverting Resolution

  • Authors:
  • Ştefan Andrei

  • Affiliations:
  • CS Programme, Singapore-MIT Alliance, Faculty of Informatics, National University of Singapore," Al.I.Cuza" University, Iaşi, România

  • Venue:
  • Artificial Intelligence Review
  • Year:
  • 2004

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Abstract

We present a new algorithm for counting truth assignments of a clausal formula using inverse propositional resolution and its associated normalization rules. The idea is opposite of the classical resolution, and is achieved by constructing in a bottom-up manner a computation graph. This means that we successively add complementary literals to generate new bigger clauses instead of solving them. Next, we make a comparison between the classical and inverse resolution, followed by a new algorithm which combines these two techniques for solving the SAT problem.