Mapping problems with finite-domain variables to problems with boolean variables

  • Authors:
  • Carlos Ansótegui;Felip Manyà

  • Affiliations:
  • Computer Science Department, Universitat de Lleida, Lleida, Spain;Computer Science Department, Universitat de Lleida, Lleida, Spain

  • Venue:
  • SAT'04 Proceedings of the 7th international conference on Theory and Applications of Satisfiability Testing
  • Year:
  • 2004

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Abstract

We define a collection of mappings that transform many-valued clausal forms into satisfiability equivalent Boolean clausal forms, analyze their complexity and evaluate them empirically on a set of benchmarks with state-of-the-art SAT solvers. Our results provide empirical evidence that encoding combinatorial problems with the mappings defined here can lead to substantial performance improvements in complete SAT solvers.