A probabilistic model of plan recognition

  • Authors:
  • Eugene Charniak;Robert Goldman

  • Affiliations:
  • Department of Computer Science, Brown University, Providence, RI;Department of Computer Science, Tulane University, New Orleans, LA

  • Venue:
  • AAAI'91 Proceedings of the ninth National conference on Artificial intelligence - Volume 1
  • Year:
  • 1991

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Abstract

Plan-recognition requires the construction of possible plans which could explain a set of observed actions, and then selecting one or more of them as providing the belt explanation. In this paper we present a formal model of the latter process based upon probability theory. Our model consists of a knowledge-base of facts about the world expressed in a first-order language, and rules for using that knowledge-base to construct a Bayesian network. The network is then evaluated to find the plans with the highest probability.