]*>","")" /> 对称逐步超松弛预处理共轭梯度法的改进迭代格式

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对称逐步超松弛预处理共轭梯度法的改进迭代格式

林绍忠   

  1. 武汉长江科学院!武汉
  • 出版日期:1997-04-20 发布日期:1997-04-20

林绍忠. 对称逐步超松弛预处理共轭梯度法的改进迭代格式[J]. 数值计算与计算机应用, 1997, 18(4): 266-270.

IMPROVED ITERATIVE FORMAT OF SYMMETRIC SUCCESSIVE OVER RELAXATION-PRECONDITIONED CONJUGATED GRADIENT METHOD

  1. Lin Shao-zhong(Yangtze River Scientific Researeh Institute, Wuhan)
  • Online:1997-04-20 Published:1997-04-20
The symmetric successive over relaxation- preconditioned conjugated gradient method (SSOR-PCG) is a very efficient iterative method for solving large sparse linear equations.In this paper an improved iterative format 0f the SSORPCG method is pressented,which avoids the product operation of coefficient matrix and direction vector and thus saves computation work about 8%-50%.
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[1]吕涛,石济民,林振宝,区域分解算法-偏微分方程数值解法新技术,北京,科学出版社,1992,5.
[2]张丽君,金绥更,向量算法与并行算法,北京,国防工业出版社,1993,10.
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