Acceleration techniques for level bundle methods in weakly smooth convex constrained optimization
Acceleration techniques for level bundle methods in weakly smooth convex constrained optimization
复制标题
弱光滑凸约束优化中水平束方法的加速技术
DOI:
10.1007/s10589-020-00208-9
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发表时间:
2020
影响因子:
2.2
通讯作者:
Zhang, Wei
中科院分区:
文献类型:
--
作者:
Chen, Yunmei;Ye, Xiaojing;Zhang, Wei
We develop a unified level-bundle method, called accelerated constrained level-bundle (ACLB) algorithm, for solving constrained convex optimization problems. where the objective and constraint functions can be nonsmooth, weakly smooth, and/or smooth. ACLB employs Nesterov’s accelerated gradient technique, and hence retains the iteration complexity as that of existing bundle-type methods if the objective or one of the constraint functions is nonsmooth. More importantly, ACLB can significantly reduce iteration complexity when the objective and all constraints are (weakly) smooth. In addition, if the objective contains a nonsmooth component which can be written as a specific form of maximum, we show that the iteration complexity of this component can be much lower than that for general nonsmooth objective function. Numerical results demonstrate the effectiveness of the proposed algorithm.
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影响因子:
--
作者:
YunMei, CHEN;Wei, ZHANG
通讯作者:
Wei, ZHANG
影响因子:
1.1
作者:
W. Oliveira
通讯作者:
W. Oliveira
影响因子:
1.8
作者:
Yunier Bello Cruz;W. Oliveira
通讯作者:
W. Oliveira
影响因子:
3.1
作者:
Csaba I. Fábián;Christian Wolf;Achim Koberstein;L. Suhl
通讯作者:
L. Suhl