Information-based complexity
Asymptotically optimal weighted numerical integration
Journal of Complexity
Optimal integration of Lipschitz functions with a Gaussian weight
Journal of Complexity
Complexity of weighted approximation over R
Journal of Approximation Theory
Delayed curse of dimension for Gaussian integration
Journal of Complexity
Worst case complexity of multivariate Feynman-Kac path integration
Journal of Complexity
Randomly shifted lattice rules for unbounded integrands
Journal of Complexity - Special issue: Information-based complexity workshops FoCM conference Santander, Spain, July 2005
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We study the worst case complexity of weighted approximation and integration for functions defined over Rd. We assume that the functions have all partial derivatives of order up to r uniformly bounded in a weighted Lp-norm for a given weight function ψ. The integration and the error for approximation are defined in a weighted sense for another given weight ρ. We present a necessary and sufficient condition on weight functions ρ and ψ for the complexity of the problem to be finite. Under additional conditions, we show that the complexity of the weighted problem is proportional to the complexity of the corresponding classical problem defined over a unit cube and with ρ = ψ = 1. Similar results have been obtained recently for scalar functions (d = 1) and for multivariate functions under restriction that ψ = 1 and p = ∞.