Solving large and sparse linear least-squares problems by conjugate gradient algorithms (Q1102707)
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scientific article; zbMATH DE number 4050860
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Solving large and sparse linear least-squares problems by conjugate gradient algorithms |
scientific article; zbMATH DE number 4050860 |
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Solving large and sparse linear least-squares problems by conjugate gradient algorithms (English)
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1988
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Large and sparse least squares problems are transformed into equivalent problems which have a symmetric and positivedefinite matrix by a certain decomposition technique. The conjugate gradient algorithm (CG) is applied in the solution of the later problem. Numerical examples are performed with well-known test problems. The results illustrate that the CG algorithms applied to the modified problems is very efficient for some classes of problems.
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Large and sparse least squares problems
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decomposition technique
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conjugate gradient algorithm
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Numerical examples
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