A primal-dual fixed point algorithm for minimization of the sum of three convex separable functions
A primal-dual fixed point algorithm for minimization of the sum of three convex separable functions
复制标题
最小化三个凸可分函数之和的原对偶不动点算法
DOI:
10.1186/s13663-016-0543-2
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发表时间:
2015-12
影响因子:
--
通讯作者:
Zhang Xiaoqun
中科院分区:
文献类型:
--
作者:
Chen Peijun;Huang Jianguo;Zhang Xiaoqun
Many problems arising in image processing and signal recovery with multi-regularization and constraints can be formulated as minimization of a sum of three convex separable functions. Typically, the objective function involves a smooth function with Lipschitz continuous gradient, a linear composite nonsmooth function, and a nonsmooth function. In this paper, we propose a primal-dual fixed point (PDFP) scheme to solve the above class of problems. The proposed algorithm for three-block problems is a symmetric and fully splitting scheme, only involving an explicit gradient, a linear transform, and the proximity operators which may have a closed-form solution. We study the convergence of the proposed algorithm and illustrate its efficiency through examples on fused LASSO and image restoration with non-negative constraint and sparse regularization.
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影响因子:
2.1
作者:
Krol A;Li S;Shen L;Xu Y
通讯作者:
Xu Y
DOI:
10.1016/s0168-2024(08)x7003-1
发表时间:
1983
期刊:
--
影响因子:
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影响因子:
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通讯作者:
Combettes, Patrick L.
DOI:
10.1145/1835804.1835847
发表时间:
2010-07
期刊:
Proceedings of the 16th ACM SIGKDD international conference on Knowledge discovery and data mining
影响因子:
--
作者:
Jun Liu;Lei Yuan;Jieping Ye
通讯作者:
Jun Liu;Lei Yuan;Jieping Ye
影响因子:
14.9
作者:
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通讯作者:
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