Factoring symmetric totally nonpositive matrices and inverses with a diagonal pivoting method
Factoring symmetric totally nonpositive matrices and inverses with a diagonal pivoting method
复制标题
使用对角旋转方法分解对称完全非正矩阵和逆矩阵
DOI:
10.1007/s10543-012-0404-2
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发表时间:
2012-11
影响因子:
1.5
通讯作者:
Huang, Rong
中科院分区:
文献类型:
--
作者:
Huang, Rong
In this paper, we consider how to factor symmetric totally nonpositive matrices and their inverses by taking advantage of the symmetric property. It is well-known that the Bunch-Kaufman algorithm is the most commonly used pivoting strategy which can, however, produce arbitrarily large entries in the lower triangular factor for such matrices as illustrated by our example. Therefore, it is interesting to show that when the Bunch-Parlett algorithm is simplified for these matrices, it only requiresO(n2) comparisons with the growth factor being nicely bounded by 4. These facts, together with a nicely bounded lower triangular factor and a pleasantly small relative backward error, show that the Bunch-Parlett algorithm is more preferable than the Bunch-Kaufman algorithm when dealing with these matrices.
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影响因子:
1.1
作者:
Huang, Rong
通讯作者:
Huang, Rong
DOI:
10.1137/s0895479895290371
发表时间:
1997
期刊:
SIAM J. Matrix Anal. Appl.
影响因子:
--
作者:
N. Higham
通讯作者:
N. Higham
DOI:
10.1137/s0895479804440335
发表时间:
2005-05
期刊:
SIAM J. Matrix Anal. Appl.
影响因子:
--
作者:
J. Demmel;P. Koev
通讯作者:
J. Demmel;P. Koev
DOI:
10.1137/050631537
发表时间:
2006-12
期刊:
SIAM J. Matrix Anal. Appl.
影响因子:
--
作者:
M. J. Peláez;J. Moro
通讯作者:
M. J. Peláez;J. Moro
影响因子:
2.9
作者:
J. Bunch
通讯作者:
J. Bunch