The coefficient matrix of an interpolation problem of scattered data through inverse multiquadric (IMQ) radial basis functions (RBFs) is considered. Such matrix is partially decomposed in lower-rank matrices. Then, based on such a decomposition, an ad-hoc preconditioner is proposed.
RBFs Preconditioning via Fourier Decomposition Method
Giacomini J.
2024-01-01
Abstract
The coefficient matrix of an interpolation problem of scattered data through inverse multiquadric (IMQ) radial basis functions (RBFs) is considered. Such matrix is partially decomposed in lower-rank matrices. Then, based on such a decomposition, an ad-hoc preconditioner is proposed.File in questo prodotto:
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