求解m矩阵线性系统的一种新的优化迭代方法

Pub Date : 2021-11-22 DOI:10.21136/AM.2021.0246-20
Alireza Fakharzadeh Jahromi, Nafiseh Nasseri Shams
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引用次数: 1

摘要

本文提出了一种求解系数矩阵为M-矩阵的线性系统的新迭代方法。该方法包括通过加速超松弛(AOR)分裂和使用泰勒近似获得的四个参数。首先,在一些标准假设下,我们建立了新方法的收敛性。然后,通过最小化迭代矩阵的Frobenius范数,我们找到了最优参数。同时,测试实例的数值结果表明,与Hermitian和偏斜Hermitian分裂(HSS)、AOR方法和AOR迭代的修改版本相比,新方法是有效的。
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A new optimized iterative method for solving M-matrix linear systems

In this paper, we present a new iterative method for solving a linear system, whose coefficient matrix is an M-matrix. This method includes four parameters that are obtained by the accelerated overrelaxation (AOR) splitting and using the Taylor approximation. First, under some standard assumptions, we establish the convergence properties of the new method. Then, by minimizing the Frobenius norm of the iteration matrix, we find the optimal parameters. Meanwhile, numerical results on test examples show the efficiency of the new proposed method in contrast with the Hermitian and skew-Hermitian splitting (HSS), AOR methods and a modified version of the AOR (QAOR) iteration.

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