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arXiv 1604.04845math.OC
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大规模复合材料optimization的随机坐标下降惯性原始对偶法

A stochastic coordinate descent inertial primal-dual algorithm for large-scale composite optimization

Meng Wen, Yu-Chao Tang, Jigen Peng

摘要:

考虑一种惯性原始对偶法,用于计算两个凸函数之和与另一个凸函数与一个连续线性算子的复合的极小化。利用坐标下降的思想,设计了一种随机坐标下降惯性原对偶分裂算法。此外,为了证明所提出的惯性算法的收敛性,我们首先构造了随机Krasnosel'skiii-Mann迭代算法的惯性版本,用于逼近非扩张算子的不动点集,并研究了它的收敛性。然后将随机Krasnosel'skiii-Mann迭代的惯性形式应用于邻近算子的合成,得到了随机坐标下降惯性原对偶分裂算法的收敛性.

英文摘要:

We consider an inertial primal-dual algorithm to compute the minimizations of the sum of two convex functions and the composition of another convex function with a continuous linear operator. With the idea of coordinate descent, we design a stochastic coordinate descent inertial primal-dual splitting algorithm. Moreover, in order to prove the convergence of the proposed inertial algorithm, we formulate first the inertial version of the randomized Krasnosel'skii-Mann iterations algorithm for approximating the set of fixed points of a nonexpansive operator and investigate its convergence properties. Then the convergence of stochastic coordinate descent inertial primal-dual splitting algorithm is derived by applying the inertial version of the randomized Krasnosel'skii-Mann iterations to the composition of the proximity operator.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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