An Exact Expression for the Gap in the Data Processing Inequality for $f$ -Divergences
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DOI: 10.1109/tit.2019.2904508
Abstract: When two input discrete distributions pass through a memoryless channel, the data processing inequality expresses the fact that the $f$ divergence decreases. As is well known, in the case of the Kullback Leibler divergence, the… read more here.
Keywords: processing inequality; expression gap; data processing; formula ... See more keywords