Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/123456789/164
Title: A robust estimator of the proportional hazard transform for massive data
Authors: Tami, Omar
Rassoul, Abdelaziz
Ould Rouis, Hamid
Keywords: PHT; robust estimator; median of the mean; empirical likelihood (EL); statistical tests; MSC 2010: 62E20; 62P05
Issue Date: 2022
Series/Report no.: P22-07;
Abstract: In this paper, we explore the idea of grouping under the massive data framework, to propose a median-of-means non-parametric type estimator for the Proportional Hazard Transform (PHT), which has been widely used in finance and insurance. Under certain conditions on the growth rate of subgroups, the consistency and asymptotic normality of the proposed estimators are investigated. Furthermore, we construct a new method to test PHT based on the empirical likelihood method for the median in order to avoid any prior estimate of the variance structure for the proposed estimator, as it is difficult to estimate and often causes much inaccuracy. Numerical simulations and real-data analysis are designed to show the present estimator’s performance. The results confirm that the new put-forward estimator is quite robust with respect to outliers.
URI: http://localhost:8080/xmlui/handle/123456789/164
Appears in Collections:Publications électroniques

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