Scaled Bregman divergences in a Tsallis scenario

Details Scaled Bregman divergences in a Tsallis scenario Scaled Bregman divergences in a Tsallis scenario

2011-01-11

arxiv.org/abs/1101.2190v3

Physics

Condensed Matter

Statistical Mechanics

18 pages. Iterative corrections

Scientific paper

There exist two different versions of the Kullback-Leibler divergence (K-Ld) in Tsallis statistics, namely the usual generalized K-Ld and the generalized Bregman K-Ld. Problems have been encountered in trying to reconcile them. A condition for consistency between these two generalized K-Ld-forms by recourse to the additive duality of Tsallis statistics is derived. It is also shown that the usual generalized K-Ld subjected to this additive duality, known as the dual generalized K-Ld, is a scaled Bregman divergence. This leads to an interesting conclusion: the dual generalized mutual information is a scaled Bregman information. The utility and implications of these results are discussed.

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