Entropic approach to E. Rios central limit theorem for W2 transport distance

نویسنده

  • Sergey G. Bobkov
چکیده

The central limit theorem is considered with respect to the transport distance W2. We discuss an alternative approach to a result of E. Rio, based on a Berry–Esseen-type bound for the entropic distance to the normal distribution. © 2013 Elsevier B.V. All rights reserved. Let X and Z be random variables with distributions F and G, having finite second moments. The Kantorovich distance W2(F ,G) between F and G, also called the quadratic Wasserstein distance, is defined by W 2 2 (F ,G) = W 2 2 (X, Z) = inf  E (X ′ − Z ′)2 : X ′ ∼ F , Z ′ ∼ G  , (1) where the infimum is taken over all random variables X ′ and Z ′ with distributions F and G, respectively. More precisely, W 2 2 (F ,G) = inf π  ∞

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تاریخ انتشار 2013