Abstract
Parametric models are commonly used in frequency analysis of extreme hydrological events. To estimate extreme quantiles associated to high return periods, these models are not always appropriate. Therefore, estimators based on extreme value theory (EVT) are proposed in the literature. The Weissman estimator is one of the popular EVT-based semi-parametric estimators of extreme quantiles. In the present paper we propose a new family of EVT-based semi-parametric estimators of extreme quantiles. To built this new family of estimators, the basic idea consists in assigning the weights to the k observations being used. Numerical experiments on simulated data are performed and a case study is presented. Results show that the proposed estimators are smooth, stable, less sensitive, and less biased than Weissman estimator.
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Acknowledgments
Financial support for this study was graciously provided by the Natural Sciences and Engineering Research Council (NSERC) of Canada and the Canada Research Chair Program. The authors wish to express their appreciation to the reviewers and the Editor-in-Chef for their invaluable comments and suggestions.
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Lekina, A., Chebana, F. & Ouarda, T.B.M.J. Weighted estimate of extreme quantile: an application to the estimation of high flood return periods. Stoch Environ Res Risk Assess 28, 147–165 (2014). https://doi.org/10.1007/s00477-013-0705-2
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DOI: https://doi.org/10.1007/s00477-013-0705-2