New Fast and Accurate Jacobi SVD Algorithm. II

This paper presents a new one-sided Jacobi SVD algorithm for triangular matrices computed by revealing QR factorizations. If used in the preconditioned Jacobi SVD algorithm, described in part one of this paper, it delivers superior performance leading to the currently fastest method for computing SV...

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Bibliographic Details
Published in:SIAM journal on matrix analysis and applications Vol. 29; no. 4; pp. 1343 - 1362
Main Authors: DRMAC, Zlatko, VESELIC, Kresimir
Format: Journal Article
Language:English
Published: Philadelphia, PA Society for Industrial and Applied Mathematics 01.01.2008
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ISSN:0895-4798, 1095-7162
Online Access:Get full text
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Summary:This paper presents a new one-sided Jacobi SVD algorithm for triangular matrices computed by revealing QR factorizations. If used in the preconditioned Jacobi SVD algorithm, described in part one of this paper, it delivers superior performance leading to the currently fastest method for computing SVD decomposition with high relative accuracy. Furthermore, the efficiency of the new algorithm is comparable to the less accurate bidiagonalization-based methods. The paper also discusses underflow issues in floating point implementation and shows how to use perturbation theory to fix the imperfectness of the machine arithmetic.
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ISSN:0895-4798
1095-7162
DOI:10.1137/05063920X