An Implicit Wavelet Sparse Approximate Inverse Preconditioner
An Implicit Wavelet Sparse Approximate Inverse Preconditioner
复制标题
隐式小波稀疏近似逆预处理器
DOI:
10.1137/s1064827503423500
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发表时间:
2005
期刊:
影响因子:
--
通讯作者:
Ke Chen
中科院分区:
文献类型:
--
作者:
S. Hawkins;Ke Chen
Wavelet-based sparse approximate inverse preconditioners are considered for the linear system Ax=b. The preconditioners are good sparse approximations to the inverse of A computed by taking advantage of the compression obtained by working in a wavelet basis. When the representation of A in a single scale basis (for example, a finite element basis) is available, the formulation presented obviates computation of the representation of A in the wavelet basis and removes the associated costs. Efficient application for both sparse and dense A is considered.
DOI:
10.1137/1.9780898718003
发表时间:
2003-05
期刊:
--
影响因子:
--
作者:
Y. Saad
通讯作者:
Y. Saad