Reduced rank regression via adaptive nuclear norm penalization.

Reduced rank regression via adaptive nuclear norm penalization.
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DOI:
10.1093/biomet/ast036
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发表时间:
2013-12-04
期刊:
影响因子:
2.7
通讯作者:
Chan KS
Chan KS
中科院分区:
数学2区
文献类型:
--
作者:
Chen K;Dong H;Chan KS

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We propose an adaptive nuclear norm penalization approach for low-rank matrix approximation, and use it to develop a new reduced rank estimation method for high-dimensional multivariate regression. The adaptive nuclear norm is defined as the weighted sum of the singular values of the matrix, and it is generally non-convex under the natural restriction that the weight decreases with the singular value. However, we show that the proposed non-convex penalized regression method has a global optimal solution obtained from an adaptively soft-thresholded singular value decomposition. The method is computationally efficient, and the resulting solution path is continuous. The rank consistency of and prediction/estimation performance bounds for the estimator are established for a high-dimensional asymptotic regime. Simulation studies and an application in genetics demonstrate its efficacy.
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