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arXiv 1302.3302math.STstat.TH
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高维数据似然比检验的渐近功效

Asymptotic power of likelihood ratio tests for high dimensional data

Cheng Wang, Longbing Cao, Baiqi Miao

摘要:

本文研究了当样本维数p大于样本量n时,同一性检验的似然比检验(LRT)的渐近功效。给出了LRT在备选方案下的渐近分布,并导出了幂的显式表达式。进行了模拟研究,比较LRT与其他测试。所有这些研究表明,LRT是一个强大的测试,以检测零附近的特征值。关键词:协方差阵,高维数据,同一性检验,似然比检验,功效

英文摘要:

This paper considers the asymptotic power of likelihood ratio test (LRT) for the identity test when the dimension p is large compared to the sample size n. The asymptotic distribution of LRT under alternatives is given and an explicit expression of the power is derived. A simulation study is carried out to compare LRT with other tests. All these studies show that LRT is a powerful test to detect eigenvalues around zero. Key words and phrases: Covariance matrix, High dimensional data, Identity test, Likelihood ratio test, Power

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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