兰州大学机构库

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A restrictive preconditioner for the system arising in half-quadratic regularized image restoration 期刊论文
Applied Mathematics Letters, 2021, 卷号: 115
Authors:  Zhao, Pei-Pei;  Huang, YM(黄玉梅)
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Conjugate gradient method  Linear systems  Matrix algebra  Newton-Raphson method  Numerical methods  Restoration  Ill conditioned problems  Image restoration problem  Numerical experiments  Preconditioned matrix  Regularization methods  Spectral properties  Structured systems  Symmetric positive definite  
复对称问题、线性互补问题和线性离散不适定问题的四种数值解法研究 学位论文
, 兰州: 兰州大学, 2020
Authors:  张维红
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复对称线性系统  线性互补问题  线性离散不适定问题  迭代方法  收敛性  
Conjugate gradient method preconditioned with modified block SSOR iteration for multiplicative half-quadratic image restoration 期刊论文
CALCOLO, 2020, 卷号: 57, 期号: 3
Authors:  Zhao, Pei-Pei;  Huang, YM(黄玉梅)
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Image restoration  Multiplicative half-quadratic regularization  Newton method  Preconditioners  
图像Retinex问题的方法及应用 学位论文
, 兰州: 兰州大学, 2020
Authors:  杨雪
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Retinex理论  Retinex问题  反射图像  光照图像  变分方法  线性互补问题  模系迭代方法  高动态范围图像  交替迭代法  秩最小化  矩阵填充  图像配准  
A Modulus Iteration Method for SPSD Linear Complementarity Problem Arising in Image Retinex 期刊论文
ADVANCES IN APPLIED MATHEMATICS AND MECHANICS, 2020, 卷号: 12, 期号: 2, 页码: 579-598
Authors:  Yang, Xue;  Huang, YM(黄玉梅)
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Linear complementarity problem  modulus iteration method  image retinex  symmetric positive semi-definite  
几类离散非线性偏微分方程及其约束优化问题的迭代解法 学位论文
, 兰州: 兰州大学, 2020
Authors:  李瑞霞
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鞍点问题  PDE 约束优化问题  预处理  矩阵分裂  Krylov 子空间方法  谱分析  
On C-To-R-Based Iteration Methods for a Class of Complex Symmetric Weakly Nonlinear Equations 期刊论文
MATHEMATICS, 2020, 卷号: 8, 期号: 2
Authors:  Zeng, Min-Li;  Zhang, GF(张国凤)
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weakly nonlinear equations  C-to-R preconditioner  local convergence  Picard iteration  complex symmetric matrix  
Robust additive block triangular preconditioners for block two-by-two linear systems 期刊论文
NUMERICAL ALGORITHMS, 2019, 卷号: 82, 期号: 2, 页码: 503-537
Authors:  Liang, Zhao-Zheng;  Zhang, GF(张国凤)
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Block two-by-two linear system  Preconditioning  Spectral analysis  Iterative method  Optimization  
Parameterized GSOR Method for a Class of Complex Symmetric Systems of Linear Equations 期刊论文
JOURNAL OF MATHEMATICAL STUDY, 2019, 卷号: 52, 期号: 1, 页码: 18-29
Authors:  Wu, YJ(伍渝江);  Zhang, Wei-Hong;  Li, Xi-An;  Yang, Ai-Li
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Complex linear systems  symmetric positive definite  spectral radius  convergence  preconditioning  
Tempered分数阶拉普拉斯的有限差分逼近 学位论文
硕士, 兰州: 兰州大学, 2018
Authors:  闫耀强
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Tempered分数阶拉普拉斯  有限差分  双二次插值  收敛阶