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  "Description": "Approaches a group sparse solution of an underdetermined\nlinear system. It implements the proximal gradient algorithm to\nsolve a lower regularization model of group sparse learning.\nFor details, please refer to the paper \"Y. Hu, C. Li, K. Meng,\nJ. Qin and X. Yang. Group sparse optimization via l_{p,q}\nregularization. Journal of Machine Learning Research, to\nappear, 2017\".",
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