Evaluating Optimized Decision Procedures for Propositional Modal K(m) Satisfiability

  • Authors:
  • Ian Horrocks;Peter F. Patel-Schneider

  • Affiliations:
  • Department of Computer Science, University of Manchester, UK. e-mail: horrocks@cs.man.ac.uk;Bell Labs Research, Murray Hill, NJ, USA. e-mail: pfps@research.bell-labs.com

  • Venue:
  • Journal of Automated Reasoning
  • Year:
  • 2002

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Abstract

Heavily optimized decision procedures for propositional modal satisfiability are now becoming available. Two systems incorporating such procedures for modal K, DLP and KSATC, are tested on randomly generated CNF formulae with several sets of parameters, varying the maximum modal depth and ratio of propositional variable to modal subformulae. The results show some easy-hard-easy behavior, but there is as yet no sharp peak as in propositional satisfiability.