崔甲蓉, 朱枫怡, 刘佳敏, 许王莉. 基于经验分布函数的高维正态性检验[J]. 应用概率统计, 2020, 36(1): 41-58. DOI: 10.3969/j.issn.1001-4268.2020.01.004
引用本文: 崔甲蓉, 朱枫怡, 刘佳敏, 许王莉. 基于经验分布函数的高维正态性检验[J]. 应用概率统计, 2020, 36(1): 41-58. DOI: 10.3969/j.issn.1001-4268.2020.01.004
CUI Jiarong, ZHU Fengyi, LIU Jiamin, XU Wangli. Empirical Distribution Function Based Statistics for Testing High Dimensional Normality[J]. Chinese Journal of Applied Probability and Statistics, 2020, 36(1): 41-58. DOI: 10.3969/j.issn.1001-4268.2020.01.004
Citation: CUI Jiarong, ZHU Fengyi, LIU Jiamin, XU Wangli. Empirical Distribution Function Based Statistics for Testing High Dimensional Normality[J]. Chinese Journal of Applied Probability and Statistics, 2020, 36(1): 41-58. DOI: 10.3969/j.issn.1001-4268.2020.01.004

基于经验分布函数的高维正态性检验

Empirical Distribution Function Based Statistics for Testing High Dimensional Normality

  • 摘要: 基于经验分布函数(EDF)的Kolmogorov-Smirnov(KS), Cramer-von Mises (CM)和Anderson-Darling (AD)统计量是单变量正态性检验中常用的统计量. 本文通过变量降维方法,提出基于EDF的广义统计量来检验高维正态性.通过蒙特卡洛方法模拟了三种统计量的近似临界值,并基于单变量情形下统计量的近似分布公式研究了广义统计量在原假设下的近似分布.蒙特卡洛模拟说明在某些备择假设下, 所提出的统计量比现有方法功效更好. 最后,本章将提出的检验方法应用于实际数据验证统计量的有效性.

     

    Abstract: Kolmogorov-Smirnov (KS), Cramer-von Mises (CM) and Anderson-Darling (AD) test, which are based on empirical distribution function (EDF), are well-known statistics in testing univariate normality. In this paper, we focus on the high dimensional case and propose a family of generalized EDF based statistics to test the high-dimensional normal distribution by reducing the dimension of the variable. Not only can we approximate the corresponding critical values of three statistics by Monte Carlo method, we also can investigate the approximate distributions of proposed statistics based on approximate formulas in univariate case under null hypothesis. The Monte Carlo simulation is carried out to demonstrate that the performance of proposed statistics is more competitive than existing methods under some alternative hypotheses. Finally, the proposed tests are applied to real data to illustrate their utility.

     

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