Interpolation in the limit of increasingly flat radial basis functions

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Interpolation in the Limit of Increasingly Flat Radial Basis Functions

Many types of radial basis functions, such as multiquadrics, contain a free parameter. In the limit where the basis functions become increasingly flat, the linear system to solve becomes highly ill-conditioned, and the expansion coefficients diverge. Nevertheless, we find in this study that limiting interpolants often exist and take the form of polynomials. In the 1-D case, we prove that with s...

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ژورنال

عنوان ژورنال: Computers & Mathematics with Applications

سال: 2002

ISSN: 0898-1221

DOI: 10.1016/s0898-1221(01)00295-4