January 2022 Semi-parametric estimation of the Quintile Share Ratio index of inequality measure for heavy-tailed income distributions with index in the upper half of the unit interval
El Hadji Deme, Tchilabalo Abozou Kpanzou, Ebrima Sisawo
Afr. Stat. 17(1): 3095-3114 (January 2022). DOI: 10.16929/as/2022.3095.196

Abstract

Kpanzou (2014) proposed an asymptotic \(\alpha\) stable distribution for the nonparametric Quintile Share Ratio (QSR) estimator in the case of heavy-tailed distributions. It is well known that the heaviness of the distribution tails is controlled by an unknown parameter called tail index. To better understand the behavior of the distribution tail and the inequality of capital incomes, we introduce, in this paper, semi-parametric estimators of the QSR index which take into account the estimation of that tail index, and we study their asymptotic normality. A small simulation is conducted to illustrate the performance of our method.

Kpanzou (2014) a proposé une distribution asymptotique (\alpha\) stable de l'estimateur non paramétrique du rapport des quintiles (QSR) dans le cas des lois à queue lourdes. Il est bien connu que le comportement des queues de distribution est controlé par un paramètre inconnu appelé indice de queue. Pour mieux comprendre la lourdeur des queues de distributions et l'inégalité des revenus, nous introduisons, dans cet article, des estimateurs semi-paramétriques du QSR qui prennent en compte l'estimation de cet indice de queue et nous étudions leur normalité asymptotique. Une petite étude de simulation est réalisée pour illustrer la performance de notre méthode.

Citation

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El Hadji Deme. Tchilabalo Abozou Kpanzou. Ebrima Sisawo. "Semi-parametric estimation of the Quintile Share Ratio index of inequality measure for heavy-tailed income distributions with index in the upper half of the unit interval." Afr. Stat. 17 (1) 3095 - 3114, January 2022. https://doi.org/10.16929/as/2022.3095.196

Information

Published: January 2022
First available in Project Euclid: 18 May 2022

Digital Object Identifier: 10.16929/as/2022.3095.196

Subjects:
Primary: 62E20
Secondary: 62H12

Keywords: bias reduction , estimation , extreme value , heavy-tailed , quintile Share Ratio index

Rights: Copyright © 2022 The Statistics and Probability African Society

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Vol.17 • No. 1 • January 2022
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