Coordinatewise Gaussianization: Theories and Applications
Coordinatewise Gaussianization: Theories and Applications
复制标题
坐标高斯化:理论与应用
DOI:
10.1080/01621459.2022.2044825
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发表时间:
2022-02
影响因子:
3.7
通讯作者:
Hui Zou
中科院分区:
文献类型:
--
作者:
Qing Mai;Di He;Hui Zou
Abstract In statistical analysis, researchers often perform coordinatewise Gaussianization such that each variable is marginally normal. The normal score transformation is a method for coordinatewise Gaussianization and is widely used in statistics, econometrics, genetics and other areas. However, few studies exist on the theoretical properties of the normal score transformation, especially in high-dimensional problems where the dimension p diverges with the sample size n. In this article, we show that the normal score transformation uniformly converges to its population counterpart even when log p=o(n/ log n). Our result can justify the normal score transformation prior to any downstream statistical method to which the theoretical normal transformation is beneficial. The same results are established for the Winsorized normal transformation, another popular choice for coordinatewise Gaussianization. We demonstrate the benefits of coordinatewise Gaussianization by studying its applications to the Gaussian copula model, the nearest shrunken centroids classifier and distance correlation. The benefits are clearly shown in theory and supported by numerical studies. Moreover, we also point out scenarios where coordinatewise Gaussinization does not help and even causes damages. We offer a general recommendation on how to use coordinatewise Gaussianization in applications. Supplementary materials for this article are available online.
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影响因子:
2.1
作者:
Fan, Ruzong;Wang, Yifan;Mills, James L.;Wilson, Alexander F.;Bailey-Wilson, Joan E.;Xiong, Momiao
通讯作者:
Xiong, Momiao
影响因子:
3.7
作者:
Johnstone IM;Lu AY
通讯作者:
Lu AY
影响因子:
1.7
作者:
Anokhin, AP;Heath, AC;Ralano, A
通讯作者:
Ralano, A
影响因子:
4.5
作者:
Li, Gaorong;Peng, Heng;Zhu, Lixing
通讯作者:
Zhu, Lixing
DOI:
10.1214/09-aoas312
发表时间:
2009-01-01
期刊:
The annals of applied statistics
影响因子:
--
作者:
Kosorok MR
通讯作者:
Kosorok MR