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TreeNets: A framework for anytime evaluation of belief networks

  • N. Jitnah
  • A. Nicholson
Accepted Papers
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1244)

Abstract

We present a new framework for evaluation of belief networks (BNs). It consists of two steps: (1) transforming a belief network into a tree structure called a treeNet (2) performing anytime inference by searching the treeNet. The root of the treeNet represents the query node. Whenever new evidence is incorporated, the posterior probability of the query node is re-calculated, using a variation of the polytree message-passing algorithm. The treeNet framework is geared towards anytime evaluation. Evaluating the treeNet is a tree search problem and we investigate different tree search strategies. Using a best-first method, we can to increase the rate of convergence of the anytime result.

Keywords

uncertainty Bayesian Networks anytime algorithms practical reasoning graphical models 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • N. Jitnah
    • 1
  • A. Nicholson
    • 1
  1. 1.Department of Computer ScienceMonash UniversityClaytonAustralia

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