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机译:A non-convex piecewise quadratic approximation of ?_0 regularization: theory and accelerated algorithm
School of Mathematics, Physics and Statistics, Shanghai University of Engineering Science, Shanghai 201620, China;
School of Mathematics, South China University of Technology, Guangzhou 510640, China;
Department of Mathematics, Shanghai University, Shanghai 200444, China;
Iterative thresholding algorithm; Exact recovery; Sparsity optimization; Non-convex approximation; Accelerated gradient algorithm;