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Strong Gaussian Approximation for the Sum of Random Vectors (2106.05890v2)

Published 10 Jun 2021 in math.ST and stat.TH

Abstract: This paper derives a new strong Gaussian approximation bound for the sum of independent random vectors. The approach relies on the optimal transport theory and yields \textit{explicit} dependence on the dimension size $p$ and the sample size $n$. This dependence establishes a new fundamental limit for all practical applications of statistical learning theory. Particularly, based on this bound, we prove approximation in distribution for the maximum norm in a high-dimensional setting ($p >n$).

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