Zuzana Majdisova
Department of Computer Science and Engineering, Faculty of Applied Sciences, University of West Bohemia, Czech Republic
Vaclav Skala
Department of Computer Science and Engineering, Faculty of Applied Sciences, University of West Bohemia, Czech Republic
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Published in: Proceedings of SIGRAD 2016, May 23rd and 24th, Visby, Sweden
Linköping Electronic Conference Proceedings 127:2, p. 9-14
Published: 2016-05-30
ISBN: 978-91-7685-731-1
ISSN: 1650-3686 (print), 1650-3740 (online)
Approximation of scattered data is often a task in many engineering problems. The Radial Basis Function (RBF) approximation is appropriate for large scattered datasets in d-dimensional space. It is non-separable approximation, as it is based on a distance between two points. This method leads to a solution of overdetermined linear system of equations.
In this paper a new approach to the RBF approximation of large datasets is introduced and experimental results for different real datasets and different RBFs are presented with respect to the accuracy of computation. The proposed approach uses symmetry of matrix and partitioning matrix into blocks.
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