Entropy Message Passing

  • Authors:
  • V. M. Ilić;M. S. Stanković;B. T. Todorović

  • Affiliations:
  • Dept. of Inf., Univ. of Nis, Nis, Serbia;-;-

  • Venue:
  • IEEE Transactions on Information Theory
  • Year:
  • 2011

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Abstract

The paper proposes a new message passing algorithm for cycle-free factor graphs. The proposed "entropy message passing" (EMP) algorithm may be viewed as sum-product message passing over the entropy semiring, which has previously appeared in automata theory. The primary use of EMP is to compute the entropy of a model. However, EMP can also be used to compute expressions that appear in expectation maximization and in gradient-descent algorithms.