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• W4377292034 abstract "The theme of the present paper is numerical integration of $C^r$ functions using randomized methods. We consider variance reduction methods that consist in two steps. First the initial interval is partitioned into subintervals and the integrand is approximated by a piecewise polynomial interpolant that is based on the obtained partition. Then a randomized approximation is applied on the difference of the integrand and its interpolant. The final approximation of the integral is the sum of both. The optimal convergence rate is already achieved by uniform (nonadaptive) partition plus the crude Monte Carlo; however, special adaptive techniques can substantially lower the asymptotic factor depending on the integrand. The improvement can be huge in comparison to the nonadaptive method, especially for functions with rapidly varying $r$th derivatives, which has serious implications for practical computations. In addition, the proposed adaptive methods are easily implementable and can be well used for automatic integration." @default.
• W4377292034 created "2023-05-23" @default.
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• W4377292034 date "2023-05-22" @default.
• W4377292034 modified "2023-10-18" @default.
• W4377292034 title "Monte Carlo integration of $$C^r$$ functions with adaptive variance reduction: an asymptotic analysis" @default.
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• W4377292034 doi "https://doi.org/10.1007/s10543-023-00972-0" @default.
• W4377292034 hasPublicationYear "2023" @default.
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