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Moreover, different estimation methods of parameters of one of these distributions in the bivariate case classical and some new methods based in copulas are studied

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Academic year: 2022

Partager "Moreover, different estimation methods of parameters of one of these distributions in the bivariate case classical and some new methods based in copulas are studied"

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ﺺﺨﻠﻣ

ﻰ ﻠﻋ ﻮﺘﻳرﺎ ﺑ ﻊ ﻳزﻮﺗ زﺎ ﺣ مﺎ ﻤﺘها

ﻊ ﺳاو ﻦ ﻡ ﺮ ﻴﺜﻜﻝا ﻲ ﻓ تﻻﺎ ﺠﻤﻝا

, ﻲ ﻌﻴﺒﻄﻝا ﻦ ﻡ اﺬ ﻬﻝ

ﺔﻐﻴﺻ ﻦﻋ ﺚﺤﺒﻝا تاﺮﻴﻐﺘﻤﻝا ةدﺪﻌﺘﻡ

و ﻲﻓ مﻮﻬﻔﻡ ﻊﻗاﻮﻝا طﺎﺒﺗرﻻا

نﺎآ ﻼﻤﻬﻡ مﻮﻠﻌﻝا ﻲﻓ

ﺔﻳﺪﻴﻠﻘﺘﻝا ﻪﻨﻜﻝ

ﺬﺧا اﻝ ﺔﻳﺎﻨﻌ ا ﻘﺤﺘﺴﻤﻝ

ﻲﻓ ﻷا تاﻮﻨﺴﻝا ﺮ ﻴﺧ

ة . نذإ

ﻞ ﻤﻌﻝا اﺬ ه ﻲ ﻓ ,

سرﺪ ﻥ

طﺎ ﺒﺗرﻻا ﺔ ﻝاد ﻬﻥﻷ

ﺔ ﻤﻬﻡ ﺎ تاﺮ ﻴﻐﺘﻤﻝا ةدﺪ ﻌﺘﻡ تﺎ ﻌﻳزﻮﺗ ﻞﻴﻜﺸ ﺗ ﻲ ﻓ

تاذ ﺔ ﻔﻠﺘﺨﻡ

ﺸﻡﺎه تﺎﻌﻳزﻮﺗ ﺔﻴﻔﻴآ ﺔﻴ

, ﻲﻓ و سﺎﻴﻗ و ﺝﺬﻤﻥ ﺑ طﺎ ﺒﺗرﻻا ﺔ ﻦﻴ

تاﺮ ﻴﻐﺘﻤﻝا .

ﻢ ﺙ سرﺪ ﻥ

ﺾﻌﺑ

ﻝ تﺎﺒﻴآﺮﺘﻝا ﻌﻳزﻮﺘ

تﺎ ﻮﺘﻳرﺎﺑ ﻳدﺎﺣأ و دﺪ ﻌﺘﻡ ة

تاﺮ ﻴﻐﺘﻤﻝا ,

ﻳأ ﻴﺜﻜﻝا ضﺮ ﻌﻥ ﻦ

جﺰ ﻤﻝا ﺔ ﻗﻼﻌآ ﺎﻬﺼﺋﺎﺼﺧ ﻦﻡ تﺎ ﻌﻳزﻮﺘﻝﺎﺑ

ىﺮ ﺧﻷا ,

ﻢﻴ ﻘﻝا

و ىﻮﺼ ﻘﻝا طﺎ ﺒﺗرﻻا ﺔ ﻝاد

ﺔ ﻘﻓﺮﻤﻝا .

ﺎﻀ ﻳأ قﺮ ﻃ ﺮﻳﺪ ﻘﺗ ﺔ ﻔﻠﺘﺨﻡ ﻂﺋﺎ ﺳﻮﻝ

ﻲﺋﺎ ﻨﺙ ﻮﺘﻳرﺎ ﺑ ﻊ ﻳزﻮﺗ ﺮ ﻴﻐﺘﻤﻝا

ﺔ ﻳﺪﻴﻠﻘﺗ و

ىﺮﺧأ طﺎﺒﺗرﻻا ﺔﻝاد ﻰﻠﻋ ﺰﻜﺗﺮﺗ ةﺪﻳﺪﺝ ﺎﻬﺘﺳارد ﺖﻤﺗ

.

Abstract

In view of the high popularity of the univariate Pareto distributions in different domains, it is quite natural to ask for a multivariate extension, indeed, the concept of dependence, unfairly neglected in the classical actuarial science, has been receiving its merited attention in the recent years. Thus, in this work, we study the function of copula because it is interesting in construction of different multivariate distributions with arbitrary marginal, and in measuring and modeling the dependence between variables. Then, we study some kind of the univariates and multivariates Pareto distributions, which we expose several of it's distributional properties such us mixture by some distributions, the extremes values and the associate copula. Moreover, different estimation methods of parameters of one of these distributions in the bivariate case classical and some new methods based in copulas are studied.

Résumé

Compte tenu de la grande popularité des distributions de Pareto univariées dans différents domaines, il est tout naturel de demander une extension multivariée, en réalité, le concept de dépendance est négligé dans la science actuarielle classique, a été reçu son attention mérité dans les années récentes. Donc, dans ce travail, on étudie la fonction de copule puisqu'elle est intéressante dans la construction de différentes lois multivariées avec des marginales arbitraires, dans la mesure et la modélisation de la dépendance entre les variables aléatoires. Puis, on étudie quelques versions de lois Pareto univariées et mutivariées, dont on expose beaucoup de ses propriétés comme le mélange par quelques distributions, les valeurs extrêmes, et la copule associée. Aussi, différentes méthodes d'estimation des paramètres de l'une de ces lois dans le cas bivarié classiques et d'autres nouvelles méthodes basées sur les copules sont étudiées.

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