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- W1963492116 abstract "Recently Golub and Yuan [BIT 42 (2002) 814] proposed the ST decomposition for matrices. However, its numerical stability has not been discussed so far. Here we present preliminary investigations on the numerical behavior of the ST decomposition. We also propose modifications (modified algorithm) to improve the algorithm's numerical stability. Numerical tests of the Golub–Yuan algorithm and our modified algorithm are given for some famous test matrices. All tests include comparisons with the LU (or Cholesky) decomposition without pivoting. These numerical tests indicate that the Golub–Yuan algorithm and its modified version possess reasonable numerical stability. In particular, the modified algorithm is stable for sparse matrices. Moreover, it is more stable than the Golub–Yuan algorithm in the case of dense matrices." @default.
- W1963492116 created "2016-06-24" @default.
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- W1963492116 date "2003-11-01" @default.
- W1963492116 modified "2023-09-30" @default.
- W1963492116 title "Modified ST algorithms and numerical experiments" @default.
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- W1963492116 doi "https://doi.org/10.1016/s0168-9274(03)00059-x" @default.
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