Convergence analysis of a block preconditioned steepest descent eigensolver with implicit deflation
Convergence analysis of a block preconditioned steepest descent eigensolver with implicit deflation
复制标题
具有隐式紧缩的块预处理最陡下降本征求解器的收敛性分析
DOI:
10.1002/nla.2498
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发表时间:
2023
影响因子:
4.3
通讯作者:
Neymeyr, Klaus
中科院分区:
文献类型:
--
作者:
Zhou, Ming;Bai, Zhaojun;Cai, Yunfeng;Neymeyr, Klaus
Gradient‐type iterative methods for solving Hermitian eigenvalue problems can be accelerated by using preconditioning and deflation techniques. A preconditioned steepest descent iteration with implicit deflation (PSD‐id) is one of such methods. The convergence behavior of the PSD‐id is recently investigated based on the pioneering work of Samokish on the preconditioned steepest descent method (PSD). The resulting non‐asymptotic estimates indicate a superlinear convergence of the PSD‐id under strong assumptions on the initial guess. The present paper utilizes an alternative convergence analysis of the PSD by Neymeyr under much weaker assumptions. We embed Neymeyr's approach into the analysis of the PSD‐id using a restricted formulation of the PSD‐id. More importantly, we extend the new convergence analysis of the PSD‐id to a practically preferred block version of the PSD‐id, or BPSD‐id, and show the cluster robustness of the BPSD‐id. Numerical examples are provided to validate the theoretical estimates.
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影响因子:
0.9
作者:
Yunfeng Cai;Z. Bai;J. Pask;N. Sukumar
通讯作者:
N. Sukumar
DOI:
10.1137/040620643
发表时间:
2006
期刊:
SIAM J. Numer. Anal.
影响因子:
--
作者:
E. Ovtchinnikov
通讯作者:
E. Ovtchinnikov
影响因子:
1.1
作者:
A. Knyazev;A. L. Shorokhodov
通讯作者:
A. L. Shorokhodov
影响因子:
1.1
作者:
E. Ovtchinnikov
通讯作者:
E. Ovtchinnikov
影响因子:
1.3
作者:
M. Zhou;K. Neymeyr
通讯作者:
K. Neymeyr