Technical report 3/2005

Approximation of functions by exponential sums based on the Newton-type optimisation

Wolfgang Hackbusch, Boris N. Khoromskij,and Andreas Klaus

Contact the author: Please use for correspondence this email.
Submission date: 27. Apr. 2005
Pages: 17
Download full preprint: PDF (205 kB), PS ziped (209 kB)

In this paper we describe and document an algorithm for solving the nonlinear optimisation problem by an adaptive Newton-type method arising from approximation of functions by exponential sums. The algorithm can be applied to efficient representation of multi-dimensional non-local operators and related matrices.

07.10.2017, 01:40