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- W1749002875 abstract "In this paper, we propose a general framework and a corresponding algorithm that are suitable for a wide class of problems with sparse regularizer and low rank regularizer. The framework allows the regularizers to be composite, non-convex and non-smooth, thus provides flexible options for modeling. We apply a recent optimization tool called “proximal average” to the regularizers. Instead of directly solving the proximal step of the composite sparse and low rank regularizer, we average the solutions from the proximal problems of each regularizers, resulting much lower per-iteration complexity. We also prove that the proposed algorithm converges to a stationary point with this simple strategy. Numerical examples validate the applicability of the framework and the effectiveness of the proposed algorithm." @default.
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- W1749002875 date "2016-01-01" @default.
- W1749002875 modified "2023-09-27" @default.
- W1749002875 title "Generalized non-convex non-smooth sparse and low rank minimization using proximal average" @default.
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- W1749002875 doi "https://doi.org/10.1016/j.neucom.2015.10.037" @default.
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