期刊
DIGITAL SIGNAL PROCESSING
卷 132, 期 -, 页码 -出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.dsp.2022.103794
关键词
Feature selection; Energy preserving; Graph regularization; Self-representation
资金
- National Natural Science Founda-tion of China
- Fundamental Research Funds for the Central Universities
- [61703360]
- [2242021k30014]
- [2242021k30059]
Feature selection is a fundamental and challenging topic in machine learning and pattern recognition, and unsupervised feature selection methods have received extensive attention. In this article, a novel latent energy preserving embedding method is proposed for unsupervised feature selection, which utilizes self-representation learning strategy and graph Laplacian for mining manifold information and selects features using l(2,1)-norm. Extensive experiments on real-world datasets validate the effectiveness of the proposed method.
As is a fundamental yet challenging topic in machine learning and pattern recognition, feature selection has received much attention. Since data are often unlabeled in real-world applications, unsupervised feature selection (UFS) methods have aroused extensive attention. In this article, we present a novel latent energy preserving embedding (LEPE) method for UFS. First, we rewrite subspace learning into the form of energy preserving. Then, a novel self-representation learning strategy is utilized in the feature selection framework, in which the low-rank and sparse constraints are imposed on the representation matrix. In addition, we utilize a graph Laplacian to mine the manifold information of data. Meanwhile, we use an l(2,1)-norm for feature selection. To validate the effectiveness of the proposed LEPE method, we conduct extensive experiments on six real-world datasets. Experimental results illustrate the effectiveness of the proposed method. (C) 2022 Elsevier Inc. All rights reserved.
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