您的位置:首页 > 论文页面
一种预条件对角占优矩阵的构造方法
发表时间:2013-07-15 浏览量:1773 下载量:442
全部作者: | 王学忠 |
作者单位: | 河西学院数学与统计学院 |
摘 要: | 当线性方程组的系数矩阵是严格对角占优矩阵时,大部分迭代法都收敛;当它不是对角占优矩阵时,预条件技术常被采用。当系数矩阵是H-矩阵时,一种构造预条件矩阵P和Q的方法被提出,把一个非对角占优的矩阵转化为严格对角占优矩阵。数值例子也证明了所提方法是可行的。 |
关 键 词: | 计算数学;迭代法;H-矩阵;预条件矩阵;对角占优矩阵 |
Title: | A technique for constructing preconditioned diagonally dominant matrices |
Author: | WANG Xuezhong |
Organization: | School of Mathematics and Statistics, Hexi University |
Abstract: | Most iterative methods converge when the coefficient matrix of linear systems is a strictly diagonally dominant matrix. When coefficient matrix is not diagonally dominant matrix, preconditioned techniques can be employed. This paper presented a method to establish appropriate preconditioned matrices P and Q when coefficient matrix was an H-matrix, in order to transform a non-diagonally dominant matrix into a diagonally dominant matrix. Numerical example also showed the effectiveness of this method. |
Key words: | computational mathematics; iterative method; H-matrix; preconditioned matrix; diagonally dominant matrix |
发表期数: | 2013年7月第13期 |
引用格式: | 王学忠. 一种预条件对角占优矩阵的构造方法[J]. 中国科技论文在线精品论文,2013,6(13):1227-1231. |

请您登录
暂无评论