Abstract
We describe a novel method for reducing a pair of large matrices \(\{A,B\}\) to a pair of small matrices \(\{H,K\}\). The method is an extension of Golub–Kahan bidiagonalization to matrix pairs, and simplifies to the latter method when B is the identity matrix. Applications to Tikhonov regularization of large linear discrete ill-posed problems are described. In these problems the matrix A represents a discretization of a compact integral operator and B is a regularization matrix.
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We would like to thank Kazim Khan for discussions and the referees for suggestions.
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Michiel E. Hochstenbach: Supported by an NWO Vidi research Grant.
Lothar Reichel and Xuebo Yu: Research supported in part by NSF Grant DMS-1115385.
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Hochstenbach, M.E., Reichel, L. & Yu, X. A Golub–Kahan-Type Reduction Method for Matrix Pairs. J Sci Comput 65, 767–789 (2015). https://doi.org/10.1007/s10915-015-9990-x
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DOI: https://doi.org/10.1007/s10915-015-9990-x