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   asymptotic ruin probabilities in a dependent perturbed integrated risk process with application  
   
نویسنده bazyari abouzar
منبع journal of statistical modelling: theory and applications - 2025 - دوره : 6 - شماره : 1 - صفحه:59 -82
چکیده    The present paper investigates two types of perturbed integrated risk models to compute the asymptotic ruin probabilities‎: ‎(i) the risk model which is perturbed by log-return rate‎, ‎jump process‎, ‎and brownian motion process with dependent structure between the insurance risk and investment risk when the claim sizes are pairwise strong quasi-asymptotically independent‎. ‎for this model‎, ‎we assume that the heavy-tailed claim sizes and return jumps are caused by the systematic factors with an arbitrarily dependent structure; (ii) the risk model in which the underlying price process is a geometric brownian motion‎, ‎and the jump diffusion process is modeled by a dependent affine process when the claim sizes are asymptotically independent‎. ‎for both dependent models‎, ‎the asymptotic ruin probabilities are obtained using mathematical approaches‎. ‎moreover‎, ‎some numerical studies with monte carlo simulation using the farlie-gumbel-morgenstern copula as the joint distribution function of claim sizes and return jumps are provided to verify the performance of asymptotic results‎. ‎some of the results show that‎, ‎under the framework of regular variation with dependence structure‎, ‎the asymptotic finite-time ruin probability is insensitive to the claim sizes.
کلیدواژه affine process; asymptotic ruin probability; girsanov’s theorem; heavy-tailed distribution; perturbed integrated risk model
آدرس ‎persian gulf university‎, ‎faculty of intelligent systems engineering and data science‎, department of statistics‎, iran
پست الکترونیکی ab_bazyari@pgu.ac.ir
 
     
   
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