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Factorized-Sparse-Approximate-Inverse Preconditionings of Linear Systems with Unsymmetric Matrices

✍ Scribed by A. Yu. Yeremin; A. A. Nikishin

Book ID
111595623
Publisher
Springer US
Year
2004
Tongue
English
Weight
164 KB
Volume
121
Category
Article
ISSN
1573-8795

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A two-phase preconditioning strategy of
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✍ Eun-Joo Lee; Jun Zhang πŸ“‚ Article πŸ“… 2009 πŸ› Elsevier Science 🌐 English βš– 445 KB

A two-phase preconditioning strategy based on a factored sparse approximate inverse is proposed for solving sparse indefinite matrices. In each phase, the strategy first makes the original matrix diagonally dominant to enhance the stability by a shifting method, and constructs an inverse approximati