Matrix compensation and diagonal compensation

Matrix compensation and diagonal compensation
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DOI:
10.1016/0377-0427(95)00077-1
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发表时间:
1995-11
影响因子:
2.4
通讯作者:
Hao Lu
Hao Lu
中科院分区:
数学2区
文献类型:
--
作者:
Hao Lu

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在构造正定矩阵的预条件子时,为了保持矩阵的正性,引入了矩阵补偿。将对称正定矩阵的对角补偿推广到正定矩阵。如果使用矩阵补偿来构造预处理器,则估计预处理矩阵的条件数。
Matrix compensation is introduced to preserve the positivity of matrices when we construct preconditioners for positive-definite matrices. Diagonal compensation for symmetric positive-definite matrices is generalized to positive-definite matrices. If matrix compensation is used to construct preconditioners, condition numbers of preconditioned matrices are estimated.