On the circumcentered-reflection method for the convex feasibility problem
On the circumcentered-reflection method for the convex feasibility problem
复制标题
凸可行性问题的外心反射法
DOI:
10.1007/s11075-020-00941-6
复制
发表时间:
2020
影响因子:
2.1
通讯作者:
Santos, Luiz-Rafael
中科院分区:
文献类型:
--
作者:
Behling, Roger;Bello-Cruz, Yunier;Santos, Luiz-Rafael
The ancient concept of circumcenter has recently given birth to the circumcentered-reflection method (CRM). CRM was first employed to solve best approximation problems involving affine subspaces. In this setting, it was shown to outperform the most prestigious projection-based schemes, namely, the Douglas-Rachford method (DRM) and the method of alternating projections (MAP). We now prove convergence of CRM for finding a point in the intersection of a finite number of closed convex sets. This striking result is derived under a suitable product space reformulation in which a point in the intersection of a closed convex set with an affine subspace is sought. It turns out that CRM skillfully tackles the reformulated problem. We also show that for a point in the affine set the CRM iteration is always closer to the solution set than both the MAP and DRM iterations. Our theoretical results and numerical experiments, showing outstanding performance, establish CRM as a powerful tool for solving general convex feasibility problems.
登录
查看更多内容
影响因子:
2.1
作者:
Heinz H. Bauschke;Hui Ouyang;Xianfu Wang
通讯作者:
Xianfu Wang
影响因子:
0.8
作者:
Heinz H. Bauschke;Hui Ouyang;Xianfu Wang
通讯作者:
Xianfu Wang
DOI:
10.1016/j.orl.2017.11.018
发表时间:
2017
期刊:
Oper. Res. Lett.
影响因子:
--
作者:
R. Behling;Yunier Bello Cruz;L. Santos
通讯作者:
L. Santos
影响因子:
3.1
作者:
Bauschke, Heinz H.;Moursi, Walaa M.
通讯作者:
Moursi, Walaa M.
影响因子:
2.1
作者:
R. Behling;Yunier Bello Cruz;L. Santos
通讯作者:
L. Santos