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Belief Functions: The Disjunctive Rule of Combination and the Generalized Bayesian Theorem

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Classic Works of the Dempster-Shafer Theory of Belief Functions

Part of the book series: Studies in Fuzziness and Soft Computing ((STUDFUZZ,volume 219))

Abstract

We generalize the Bayes’ theorem within the transferable belief model framework. The Generalized Bayesian Theorem (GBT) allows us to compute the belief over a space Θ given an observation x⊆ X when one knows only the beliefs over X for every θi ∈ Θ. We also discuss the Disjunctive Rule of Combination (DRC) for distinct pieces of evidence. This rule allows us to compute the belief over X from the beliefs induced by two distinct pieces of evidence when one knows only that one of the pieces of evidence holds. The properties of the DRC and GBT and their uses for belief propagation in directed belief networks are analysed. The use of the discounting factors is justfied. The application of these rules is illustrated by an example of medical diagnosis.

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Authors
  1. Philippe Smets
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Editors and Affiliations

  1. Machine Intelligence Institute, Iona College, 715 N. Avenue, New Rochelle, NY 10801-1890, USA

    Roland R. Yager (Dr.) (Dr.)

  2. Department of Management and Information Systems, University of Akron College of Business Administration, 351 Akron, OH 4325-4801, USA

    Liping Liu

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Smets, P. (2008). Belief Functions: The Disjunctive Rule of Combination and the Generalized Bayesian Theorem. In: Yager, R.R., Liu, L. (eds) Classic Works of the Dempster-Shafer Theory of Belief Functions. Studies in Fuzziness and Soft Computing, vol 219. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-44792-4_25

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  • DOI: https://doi.org/10.1007/978-3-540-44792-4_25

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-25381-5

  • Online ISBN: 978-3-540-44792-4

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