Enriched Krylov subspace methods for ill-posed problems (Q1863587)
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scientific article; zbMATH DE number 1880080
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Enriched Krylov subspace methods for ill-posed problems |
scientific article; zbMATH DE number 1880080 |
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Enriched Krylov subspace methods for ill-posed problems (English)
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11 March 2003
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If a linear system is ill-posed, there may be a few eigenvectors with small eigenvalues. Krylov subspace methods are accelerated if directions are added that model the directions of those eigenvectors. The resulting matrices are low rank updates of matrices that are found in standard Krylov space methods. Detailed numerical examples conclude the paper.
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conjugate gradient method
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Tikhonov regularization
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numerical examples
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