佳木斯职业学院学报
佳木斯職業學院學報
가목사직업학원학보
Journal of Juamjusi Education Institute
2015年
1期
144-144,146
,共2页
迭代法%H-矩阵%预条件矩阵%对角占优矩阵
迭代法%H-矩陣%預條件矩陣%對角佔優矩陣
질대법%H-구진%예조건구진%대각점우구진
Iterative Method%H-Matrix%Preconditioned Matrix%Diagonally Dominant matrix
对于线性方程组Ax=b,当A是严格对角占优矩阵时大部分迭代法都收敛。当A不是对角占优矩阵时,预条件技术常被采用。本文给出了一种构造预条件矩阵P和Q的方法,把一个非对角占优的H-矩阵转化为严格对角占优矩阵。
對于線性方程組Ax=b,噹A是嚴格對角佔優矩陣時大部分迭代法都收斂。噹A不是對角佔優矩陣時,預條件技術常被採用。本文給齣瞭一種構造預條件矩陣P和Q的方法,把一箇非對角佔優的H-矩陣轉化為嚴格對角佔優矩陣。
대우선성방정조Ax=b,당A시엄격대각점우구진시대부분질대법도수렴。당A불시대각점우구진시,예조건기술상피채용。본문급출료일충구조예조건구진P화Q적방법,파일개비대각점우적H-구진전화위엄격대각점우구진。
It is well-known that most iterative methods converge for linear systems whose coefficient matrix isA a strictly diagonally dominant. WhenA is not diagonally dominant, preconditioned techniques can be employed. This paper presents a met hod to establish appropriate preconditioned matricesPandQfor transforming anH-matrix which is non-diagonally dominant matrix into a diagonally dominant matrix. Numerrical examples also show the effectiveness of this method.