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arxiv: 1712.04903 · v1 · pith:NZEMHTX7new · submitted 2017-12-13 · 💻 cs.IT · math-ph· math.IT· math.MP· math.ST· stat.TH

A short characterization of relative entropy

classification 💻 cs.IT math-phmath.ITmath.MPmath.STstat.TH
keywords entropyrelativecharacterizationknownq-logarithmicaxiomaticallybeenbefore
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We prove characterization theorems for relative entropy (also known as Kullback-Leibler divergence), q-logarithmic entropy (also known as Tsallis entropy), and q-logarithmic relative entropy. All three have been characterized axiomatically before, but we show that earlier proofs can be simplified considerably, at the same time relaxing some of the hypotheses.

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