Convergence study on the proximal alternating direction method with larger step size
Convergence study on the proximal alternating direction method with larger step size
复制标题
大步长近端交替方向法的收敛性研究
DOI:
10.1007/s11075-019-00819-2
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发表时间:
2019-11
影响因子:
2.1
通讯作者:
Ma Feng
中科院分区:
文献类型:
--
作者:
Ma Feng
The alternating direction method of multipliers (ADMM) is a popular method for solving separable convex programs with linear constraints, and its proximal version is an important variant. In the literature, Fortin and Glowinski proved that the step size for updating the Lagrange multiplier of the ADMM can be chosen in the open interval of zero to the golden ratio, and subsequently this result has been proved to be also valid for the proximal ADMM. In this paper, we demonstrate that the dual step size can be larger than the golden ratio when the proximal regularization is positive definite. Thus, the feasible interval of the dual step size can be further enlarged for the proximal ADMM. Moreover, we establish the exact relationship between the dual step size and the proximal parameter. We also prove global convergence and establish a worst case convergence rate in the ergodic sense for this proximal scheme with the enlarged step size. Finally, we present numerical results to demonstrate the practical performance of the method.
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DOI:
10.1117/3.975277.ch6
发表时间:
2019-01
期刊:
Essential Algorithms
影响因子:
--
作者:
Marcell Schweitzer;Denis Duesseldorf
通讯作者:
Marcell Schweitzer;Denis Duesseldorf
影响因子:
2.2
作者:
He Bingsheng;Ma Feng;Yuan Xiaoming
通讯作者:
Yuan Xiaoming
DOI:
10.1007/b97543
发表时间:
2003
期刊:
--
影响因子:
--
作者:
F. Facchinei;J. Pang
通讯作者:
F. Facchinei;J. Pang
影响因子:
1.2
作者:
R. Chan;M. Tao;Xiaoming Yuan
通讯作者:
R. Chan;M. Tao;Xiaoming Yuan
DOI:
10.1109/isit.2012.6283062
发表时间:
2012-02
期刊:
2012 IEEE International Symposium on Information Theory Proceedings
影响因子:
--
作者:
John Wright;Arvind Ganesh;Kerui Min;Yi Ma
通讯作者:
John Wright;Arvind Ganesh;Kerui Min;Yi Ma