Local Robust Estimation of Pareto-Type Tails with Random Right Censoring

We propose a nonparametric robust estimator for the tail index of a conditional Pareto-type distribution in the presence of censoring and random covariates. The censored distribution is also of Pareto-type and the index is estimated locally within a narrow neighbourhood of the point of interest in t...

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Veröffentlicht in:Sankhya A 2021-02, Vol.83 (1), p.70-108
Hauptverfasser: Dierckx, Goedele, Goegebeur, Yuri, Guillou, Armelle
Format: Artikel
Sprache:eng
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Zusammenfassung:We propose a nonparametric robust estimator for the tail index of a conditional Pareto-type distribution in the presence of censoring and random covariates. The censored distribution is also of Pareto-type and the index is estimated locally within a narrow neighbourhood of the point of interest in the covariate space using the minimum density power divergence method. The main asymptotic properties of our robust estimator are derived under mild regularity conditions and its finite sample performance is illustrated on a small simulation study. A real data example is included to illustrate the practical applicability of the estimator.
ISSN:0976-836X
0972-7671
0976-8378
0976-836X
DOI:10.1007/s13171-019-00169-0