A Monte-Carlo algorithm for Dempster-Shafer belief

  • Authors:
  • Nic Wilson

  • Affiliations:
  • Department of Computer Science, Queen Mary and Westfield College, London, UK

  • Venue:
  • UAI'91 Proceedings of the Seventh conference on Uncertainty in Artificial Intelligence
  • Year:
  • 1991

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Abstract

A very computationally-efficient Monte-Carlo algorithm for the calculation of Dempster-Shafer belief is described. If Bel is the combination using Dempster's Rule of belief functions Bel1,..., Belm, then, for subset b of the frame Θ, Bel(b) can he calculated in time linear in |Θ| and m (given that the weight of conflict is bounded). The algorithm can also be used to improve the complexity of the Shenoy-Shafer algorithms on Markov trees, and be generalised to calculate Dempster-Shafer Belief over other logics.