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Entropy Message Passing
Published 16 Jun 2009 in cs.LG, cs.IT, and math.IT | (0906.2895v6)
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.
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