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Title: The net Bayes premium with dependence between the risk profiles
Authors: Hernández Bastida, A.
Fernández Sánchez, M. P.
Gómez Déniz, Emilio 
UNESCO Clasification: 1209 Estadística
Keywords: Riesgo
Métodos bayesianos
Issue Date: 2009
Publisher: 0167-6687
Journal: Insurance: Mathematics and Economics 
Abstract: In Bayesian analysis it is usual to assume that the risk profiles Θ1 and Θ2 associated with the random variables "number of claims" and "amount of a single claim", respectively, are independent. A few studies have addressed a model of this nature assuming some degree of dependence between the two random variables (and most of these studies include copulas). In this paper, we focus on the collective and Bayes net premiums for the aggregate amount of claims under a compound model assuming some degree of dependence between the random variables Θ1 and Θ2. The degree of dependence is modelled using the Sarmanov-Lee family of distributions [Sarmanov, O.V., 1966. Generalized normal correlation and two-dimensional Frechet classes. Doklady (Soviet Mathematics) 168, 596-599 and Ting-Lee, M.L., 1996. Properties and applications of the Sarmanov family of bivariate distributions. Communications Statistics: Theory and Methods 25 (6) 1207-1222], which allows us to study the impact of this assumption on the collective and Bayes net premiums. The results obtained show that a low degree of correlation produces Bayes premiums that are highly sensitive.
ISSN: 0167-6687
DOI: 10.1016/j.insmatheco.2009.07.002
Source: Insurance: Mathematics and Economics[ISSN 0167-6687],v. 45, p. 247-254
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