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- W2126989419 abstract "Abstract Preconditioning techniques are widely used to speed up the convergence of iterative methods for solving large linear systems with sparse or dense coefficient matrices. For certain application problems, however, the standard block diagonal preconditioner makes the Krylov iterative methods converge more slowly or even diverge. To handle this problem, we apply diagonal shifting and stabilized singular value decomposition (SVD) to each diagonal block, which is generated from the multilevel fast multiple algorithm (MLFMA), to improve the stability and efficiency of the block diagonal preconditioner. Our experimental results show that the improved block diagonal preconditioner maintains the computational complexity of MLFMA, converges faster and also reduces the CPU cost." @default.
- W2126989419 created "2016-06-24" @default.
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- W2126989419 date "2010-11-01" @default.
- W2126989419 modified "2023-09-22" @default.
- W2126989419 title "Stabilizing block diagonal preconditioners for complex dense matrices in electromagnetics" @default.
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- W2126989419 doi "https://doi.org/10.1016/j.amc.2010.06.056" @default.
- W2126989419 hasPublicationYear "2010" @default.
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