
FOLLOWUS
1.Tsinghua National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China
2.Department of Automation, Tsinghua University, Beijing 100084, China
[ "Ding-cheng FENG, fdc08@mails.tsinghua.edu.cn" ]
Feng CHEN, E-mail: fdc08@mails.tsinghua.edu.cn
[ "Wen-li XU, xuwl@tsinghua.edu.cn" ]
收稿:2012-06-11,
修回:2012-11-12,
纸质出版:2012-12
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Learning robust principal components from L1-norm maximization[J]. 信息与电子工程前沿(英文), 2012,13(12):901-908.
Ding-cheng FENG, Feng CHEN, Wen-li XU. Learning robust principal components from L1-norm maximization[J]. Frontiers of Information Technology & Electronic Engineering, 2012, 13(12): 901-908.
Learning robust principal components from L1-norm maximization[J]. 信息与电子工程前沿(英文), 2012,13(12):901-908. DOI: 10.1631/jzus.C1200180.
Ding-cheng FENG, Feng CHEN, Wen-li XU. Learning robust principal components from L1-norm maximization[J]. Frontiers of Information Technology & Electronic Engineering, 2012, 13(12): 901-908. DOI: 10.1631/jzus.C1200180.
Principal component analysis (PCA) is fundamental in many pattern recognition applications. Much research has been performed to minimize the reconstruction error in L1-norm based reconstruction error minimization (L1-PCA-REM) since conventional L2-norm based PCA (L2-PCA) is sensitive to outliers. Recently
the variance maximization formulation of PCA with L1-norm (L1-PCA-VM) has been proposed
where new greedy and non greedy solutions are developed. Armed with the gradient ascent perspective for optimization
we show that the L1-PCA-VM formulation is problematic in learning principal components and that only a greedy solution can achieve robustness motivation
which are verified by experiments on synthetic and real-world datasets.
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