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Generalized Exponential Concentration Inequality for Renyi Divergence Estimation
Authors: Shashank Singh and Barnabas Poczos
Conference: Proceedings of the 31st International Conference on Machine Learning (ICML-14)
Abstract: Estimating divergences between probability distributions in a consistent way is of great importance in many machine learning tasks. Although this is a fundamental problem in nonparametric statistics, to the best of our knowledge there has been no finite sample exponential inequality convergence bound derived for any divergence estimators. The main contribution of our work is to provide such a bound for an estimator of Renyi divergence for a smooth Holder class of densities on the d-dimensional unit cube. We also illustrate our theoretical results with a numerical experiment.
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