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arXiv 2004.13914stat.ME
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高维PCA秩选择的广义信息准则

A generalized information criterion for high-dimensional PCA rank selection

Hung Hung, Su-Yun Huang, Ching-Kang Ing

摘要:

主成分分析(PCA)是最常用的统计方法,用于降维。应用PCA的一个重要问题是确定秩,秩是协方差阵的主特征值的数量。赤池信息准则(AIC)和贝叶斯信息准则(BIC)是最广泛使用的秩选择方法。两者都使用自由参数的数量来评估模型的复杂性。在这项工作中,我们采用广义信息准则(GIC)提出了一种新的方法PCA秩选择下的高维框架。GIC模型的复杂度考虑了协方差特征值的大小,可以更好地适应实际应用。在广义尖峰协方差模型下,得到了GIC的渐近性质,并建立了选择相合性。

英文摘要:

Principal component analysis (PCA) is the most commonly used statistical procedure for dimension reduction. An important issue for applying PCA is to determine the rank, which is the number of dominant eigenvalues of the covariance matrix. The Akaike information criterion (AIC) and Bayesian information criterion (BIC) are among the most widely used rank selection methods. Both use the number of free parameters for assessing model complexity. In this work, we adopt the generalized information criterion (GIC) to propose a new method for PCA rank selection under the high-dimensional framework. The GIC model complexity takes into account the sizes of covariance eigenvalues and can be better adaptive to practical applications. Asymptotic properties of GIC are derived and the selection consistency is established under the generalized spiked covariance model.

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