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arXiv 2202.04100math.STmath.PRstat.TH
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矩阵变量$T$分布的局部正态逼近和概率距离界及其对Hotelling $T$统计量的应用

Local normal approximations and probability metric bounds for the matrix-variate $T$ distribution and its application to Hotelling's $T$ statistic

Frédéric Ouimet

摘要:

在本文中,我们开发的中心矩阵变量$T$密度与中心矩阵变量正常密度具有相同的协方差的比率的局部展开。近似值用于推导相应的诱导测量之间的几个概率距离(如全变差和Hellinger距离)的上界。这项工作将Shafiei & Saberali(2015)和Ouimet(2022)关于单变量学生分布的一些结果扩展到矩阵变量设置。

英文摘要:

In this paper, we develop local expansions for the ratio of the centered matrix-variate $T$ density to the centered matrix-variate normal density with the same covariances. The approximations are used to derive upper bounds on several probability metrics (such as the total variation and Hellinger distance) between the corresponding induced measures. This work extends some of the results of Shafiei & Saberali (2015) and Ouimet (2022) for the univariate Student distribution to the matrix-variate setting.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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