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On convergence conditions of waveform relaxation methods for linear differential-algebraic equations 期刊论文
JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS, 2011, 卷号: 235, 期号: 8, 页码: 2790-2804
作者:  Bai, Zhong-Zhi;  Yang, Xi
收藏  |  浏览/下载:89/0  |  提交时间:2018/07/30
Differential-algebraic equations  Laplace transform  Waveform relaxation method  Convergence theory  
Preconditioned Iterative Methods for Algebraic Systems from Multiplicative Half-Quadratic Regularization Image Restorations 期刊论文
NUMERICAL MATHEMATICS-THEORY METHODS AND APPLICATIONS, 2010, 卷号: 3, 期号: 4, 页码: 461-474
作者:  Bai, Zhong-Zhi;  Huang, Yu-Mei;  Ng, Michael K.;  Yang, Xi
收藏  |  浏览/下载:105/0  |  提交时间:2018/07/30
Edge-preserving  image restoration  multiplicative half-quadratic regularization  Newton method  preconditioned conjugate gradient method  constraint preconditioner  eigenvalue bounds  
On HSS-based iteration methods for weakly nonlinear systems 期刊论文
APPLIED NUMERICAL MATHEMATICS, 2009, 卷号: 59, 期号: 12, 页码: 2923-2936
作者:  Bai, Zhong-Zhi;  Yang, Xi
收藏  |  浏览/下载:95/0  |  提交时间:2018/07/30
System of weakly nonlinear equations  HSS iteration method  Inner/outer iteration scheme  Nonlinear iteration scheme  Local convergence  
On semi-convergence of parameterized Uzawa methods for singular saddle point problems 期刊论文
LINEAR ALGEBRA AND ITS APPLICATIONS, 2009, 卷号: 431, 期号: 5-7, 页码: 808-817
作者:  Zheng, Bing;  Bai, Zhong-Zhi;  Yang, Xi
收藏  |  浏览/下载:103/0  |  提交时间:2018/07/30
Saddle point problem  Singular matrix  Parameterized Uzawa method  Semi-convergence  Optimal iteration parameters  Semi-convergence factor