On convergence of the inexact Rayleigh quotient iteration with MINRES
On convergence of the inexact Rayleigh quotient iteration with MINRES
复制标题
不精确瑞利商迭代与MINRES的收敛
DOI:
10.1016/j.cam.2012.05.016
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发表时间:
2009-06
影响因子:
2.4
通讯作者:
Jia, Zhongxiao
中科院分区:
文献类型:
--
作者:
Jia, Zhongxiao
For the Hermitian inexact Rayleigh quotient iteration (RQI), we present a new general theory, independent of iterative solvers for shifted inner linear systems. The theory shows that the method converges at least quadratically under a new condition, called the uniform positiveness condition, that may allow the residual norm ξk≥1 of the inner linear system at outer iteration k+1 and can be considerably weaker than the condition ξk≤ξ<1 with ξ a constant not near one commonly used in the literature. We consider the convergence of the inexact RQI with the unpreconditioned and tuned preconditioned MINRES methods for the linear systems. Some attractive properties are derived for the residuals obtained by MINRES. Based on them and the new general theory, we make a refined analysis and establish a number of new convergence results. Let ‖rk‖ be the residual norm of approximating eigenpair at outer iteration k. Then all the available cubic and quadratic convergence results require ξk=O(‖rk‖) and ξk≤ξ with a fixed ξ not near one, respectively. Fundamentally different from these, we prove that the inexact RQI with MINRES generally converges cubically, quadratically and linearly provided that ξk≤ξ with a constant ξ<1 not near one, ξk=1−O(‖rk‖) and [Formula: see text] , respectively. The new convergence conditions are much more relaxed than ever before. The theory can be used to design practical stopping criteria to implement the method more effectively. Numerical experiments confirm our results.
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影响因子:
1.1
作者:
P. Smit;M. Paardekooper
通讯作者:
P. Smit;M. Paardekooper
影响因子:
1.1
作者:
Jörg Berns-Müller;I. Graham;A. Spence
通讯作者:
Jörg Berns-Müller;I. Graham;A. Spence
DOI:
10.1002/(sici)1099-1506(199709/10)4:5
发表时间:
1997-09
期刊:
Numer. Linear Algebra Appl.
影响因子:
--
作者:
Y. Lai;Kun-Yi Lin;Wen-Wei Lin
通讯作者:
Y. Lai;Kun-Yi Lin;Wen-Wei Lin
DOI:
--
发表时间:
1992
期刊:
Rutherford Appleton Laboratory Technical Reports
影响因子:
--
作者:
I. Duff;R. Grimes;J. G. Lewis
通讯作者:
I. Duff;R. Grimes;J. G. Lewis
影响因子:
14.3
作者:
G. Stewart
通讯作者:
G. Stewart