Contingent planning under uncertainty via stochastic satisfiability

  • Authors:
  • Stephen M. Majercik;Michael L. Littman

  • Affiliations:
  • -;-

  • Venue:
  • AAAI '99/IAAI '99 Proceedings of the sixteenth national conference on Artificial intelligence and the eleventh Innovative applications of artificial intelligence conference innovative applications of artificial intelligence
  • Year:
  • 1999

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Abstract

We describe two new probabilistic planning techniques-- c-MAXPLAN and ZANDER--that generate contingent plans in probabilistic propositional domains. Both operate by transforming the planning problem into a stochastic satisfiability problem and solving that problem instead. C-MAXPLAN encodes the problem as an E-MAJSAT instance, while ZANDER encodes the problem as an S-SAT instance. Although S-SAT problems are in a higher complexity class than E-MAJSAT problems, the problem encodings produced by ZANDER are substantially more compact and appear to be easier to solve than the corresponding E-MAJSAT encodings. Preliminary results for ZANDER indicate that it is competitive with existing planners on a variety of problems.