The circumcentered-reflection method achieves better rates than alternating projections
The circumcentered-reflection method achieves better rates than alternating projections
复制标题
外心反射方法比交替投影获得更好的速率
DOI:
10.1007/s10589-021-00275-6
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发表时间:
2021
影响因子:
2.2
通讯作者:
Santos, Luiz-Rafael
中科院分区:
文献类型:
--
作者:
Arefidamghani, Reza;Behling, Roger;Bello-Cruz, Yunier;Iusem, Alfredo N.;Santos, Luiz-Rafael
We study the convergence rate of the Circumcentered-Reflection Method (CRM) for solving the convex feasibility problem and compare it with the Method of Alternating Projections (MAP). Under an error bound assumption, we prove that both methods converge linearly, with asymptotic constants depending on a parameter of the error bound, and that the one derived for CRM is strictly better than the one for MAP. Next, we analyze two classes of fairly generic examples. In the first one, the angle between the convex sets approaches zero near the intersection, so that the MAP sequence converges sublinearly, but CRM still enjoys linear convergence. In the second class of examples, the angle between the sets does not vanish and MAP exhibits its standard behavior, i.e., it converges linearly, yet, perhaps surprisingly, CRM attains superlinear convergence.
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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:
2.1
作者:
R. Behling;Yunier Bello Cruz;L. Santos
通讯作者:
L. Santos
影响因子:
2.2
作者:
Behling, Roger;Bello-Cruz, J.-Yunier;Santos, Luiz-Rafael
通讯作者:
Santos, Luiz-Rafael