Iterative descent group hard thresholding algorithms for block sparsity

Thierry Chonavel,Abdeldjalil Aïssa-El-Bey,Zahran Hajji

Signal Processing（2023）

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摘要

•We propose a novel block sparse estimation procedure based on hard thresholding (GHTA).•We prove convergence of GHTA algorithm and we show that convergence occurs at linear speed.•We illustrate the benefits of GHTA with momentum in terms of robustness and performance against ℓ2,1 or more recent ℓ2,q (0更多

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关键词

Group sparsity,Block coordinate relaxation,ℓ2,0 regularization,Sensor selection,Beamforming

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