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On tractability of approximation in special function spaces

Hegland, Markus; Wasilkowski, G.W.


We consider approximation problems for a special space of d variate functions. We show that the problems have small number of active variables, as it has been postulated in the past using concentration of measure arguments. We also show that, depending on the norm for measuring the error, the problems are strongly polynomially or quasi-polynomially tractable even in the model of computation where functional evaluations have the cost exponential in the number of active variables.

CollectionsANU Research Publications
Date published: 2013
Type: Journal article
Source: Journal of Complexity
DOI: 10.1016/j.jco.2012.10.002


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