Controlled stratification for quantile estimation

Abstract : In this paper we propose and discuss variance reduction techniques for the estimation of quantiles of the ouput of a complex model with random input parameters. These techniques are based on the use of a reduced model, such as a metamodel or a response surface. The reduced model can be used as a control variate; or a rejection method can be implemented to sample the realizations of the input parameters in prescribed relevant strata; or the reduced model can be used to determine a good biased distribution of the input parameters for the calibration of an importance sampling strategy. The different strategies are analyzed, the asymptotic variances are computed and compared, which shows the benefit of an adaptive controlled stratification method. This method is applied to a real example (computation of the peak cladding temperature during a large-break loss of coolant accident in a nuclear reactor).
Liste complète des métadonnées

Cited literature [28 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00256644
Contributor : Bertrand Iooss <>
Submitted on : Friday, February 15, 2008 - 11:25:30 PM
Last modification on : Friday, March 22, 2019 - 1:42:08 AM
Document(s) archivé(s) le : Thursday, May 20, 2010 - 10:19:04 PM

Files

article_can_gar_ioo.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-00256644, version 1
  • ARXIV : 0802.2426

Citation

Claire Cannamela, Josselin Garnier, Bertrand Iooss. Controlled stratification for quantile estimation. Annals of Applied Statistics, Institute of Mathematical Statistics, 2008, 2 (4), pp.1554-1580. ⟨hal-00256644⟩

Share

Metrics

Record views

604

Files downloads

224