On the fusion of probabilistic networks

  • Authors:
  • Salem Benferhat;Faiza Titouna

  • Affiliations:
  • Université Lille-Nord de France Artois, CRIL, CNRS, UMR, Lens;Université Badji Mokhtar, Annaba, Algeria

  • Venue:
  • IEA/AIE'11 Proceedings of the 24th international conference on Industrial engineering and other applications of applied intelligent systems conference on Modern approaches in applied intelligence - Volume Part I
  • Year:
  • 2011

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Abstract

This paper deals with the problem of merging multiple-source uncertain information in the framework of probability theory. Pieces of information are represented by probabilistic (or bayesian) networks, which are efficient tools for reasoning under uncertainty. We first show that the merging of probabilistic networks having the same graphical (DAG) structure can be easily achieved in polynomial time. We then propose solutions to merge probabilistic networks having different structures. Lastly, we show how to deal with the sub-normalization problem which reflects the presence of conflicts between different sources.