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• W2090214813 abstract "We consider a convex relaxation of sparse principal component analysis proposed by d’Aspremont et al. (SIAM Rev. 49:434–448, 2007). This convex relaxation is a nonsmooth semidefinite programming problem in which the l 1 norm of the desired matrix is imposed in either the objective function or the constraint to improve the sparsity of the resulting matrix. The sparse principal component is obtained by a rank-one decomposition of the resulting sparse matrix. We propose an alternating direction method based on a variable-splitting technique and an augmented Lagrangian framework for solving this nonsmooth semidefinite programming problem. In contrast to the first-order method proposed in d’Aspremont et al. (SIAM Rev. 49:434–448, 2007), which solves approximately the dual problem of the original semidefinite programming problem, our method deals with the primal problem directly and solves it exactly, which guarantees that the resulting matrix is a sparse matrix. A global convergence result is established for the proposed method. Numerical results on both synthetic problems and the real applications from classification of text data and senate voting data are reported to demonstrate the efficacy of our method." @default.
• W2090214813 created "2016-06-24" @default.
• W2090214813 creator A5008787209 @default.
• W2090214813 date "2013-06-01" @default.
• W2090214813 modified "2023-09-25" @default.
• W2090214813 title "Alternating Direction Method of Multipliers for Sparse Principal Component Analysis" @default.
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• W2090214813 doi "https://doi.org/10.1007/s40305-013-0016-9" @default.
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