The dual step size of the alternating direction method can be larger than 1.618 when one function is strongly convex
The dual step size of the alternating direction method can be larger than 1.618 when one function is strongly convex
复制标题
当一个函数是强凸函数时,交替方向法的双步长可以大于1.618
DOI:
10.3934/jimo.2020016
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发表时间:
2021
影响因子:
1.3
通讯作者:
Wu Jian
中科院分区:
文献类型:
--
作者:
Ma Feng;Shu Jiansheng;Li Yaxiong;Wu Jian
The alternating direction method of multipliers (ADMM) is one of the most well-known optimization scheme for solving linearly constrained separable convex problem. 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. But, it is still unknown whether the dual step size can be larger than the golden ratio. In this paper, for the case where one function term is strongly convex and the associate coefficient matrix is full column rank, we present an affirmative answer to the above question. We then derive an exact relationship between the modulus and the dual step size. Our analysis deepens the understanding of the convergence properties of the ADMM.
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影响因子:
6.4
作者:
F. Bach;Rodolphe Jenatton;J. Mairal
通讯作者:
F. Bach;Rodolphe Jenatton;J. Mairal
影响因子:
2.7
作者:
ECKSTEIN, J;BERTSEKAS, DP
通讯作者:
BERTSEKAS, DP
影响因子:
2.7
作者:
Hong, Mingyi;Luo, Zhi-Quan
通讯作者:
Luo, Zhi-Quan
DOI:
10.1115/1.3169136
发表时间:
1985-09
期刊:
Journal of Applied Mechanics
影响因子:
--
作者:
R. Glowinski;J. Oden
通讯作者:
R. Glowinski;J. Oden
影响因子:
6.3
作者:
Zaiwen Wen;D. Goldfarb;W. Yin
通讯作者:
Zaiwen Wen;D. Goldfarb;W. Yin