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1.
吴传菊  王成健 《数学杂志》2014,34(2):309-318
本文研究了常数利率下,保费收入为复合Poisson过程,理赔到达过程为一般更新过程的风险模型.利用离散化的方法,获得了该风险模型的破产概率、破产时余额分布及破产前瞬间余额分布的级数展开式,推广了文[1]和文[2]中的相关结果.  相似文献   

2.
吴传菊  王成健 《数学杂志》2014,34(2):309-318
本文研究了常数利率下, 保费收入为复合Poisson 过程, 理赔到达过程为一般更新过程的风险模型. 利用离散化的方法, 获得了该风险模型的破产概率、破产时余额分布及破产前瞬间余额分布的级数展开式, 推广了文[1] 和文[2] 中的相关结果.  相似文献   

3.
离散时间的双Poisson模型的破产概率   总被引:6,自引:0,他引:6  
本文在离散复合Poisson风险模型的基础上,研究保费的收取也为一个Poisson过程的模型, 在保费收取量和理赔量都离散取整数值时,我们运用转移概率推导出了保险公司在有限时间内破产的概率以及最终破产概率的级数表达式和矩阵表达式.  相似文献   

4.
对于一类推广的复合Poisson风险模型,利用破产概率所满足的一个瑕疵更新方程以及离散寿命分布类的性质获得了关于最终破产概率的函数型上界估计.  相似文献   

5.
本文将双复合Poisson风险模型推广到资金利率和通货膨胀率下带干扰的新模型,运用鞅分析方法获得了其破产概率所满足的Lundberg不等式及其一般表达式。  相似文献   

6.
本文给出了复合Poisson盈余过程在其个体理赔量服从两个指数分布的混合 分布时破产概率的显示解,并研究了此情形下破产概率的Lundberg界.作为应用,给出 了一种计算一般复合Poisson盈余过程破产概率的近似方法.  相似文献   

7.
带干扰的双复合Poisson风险模型   总被引:1,自引:0,他引:1  
蔡高玉  耿显民 《大学数学》2007,23(1):110-112
对古典风险模型进行推广,主要研究保费收入过程为带干扰双复合Poisson过程的风险模型,运用鞅的方法得出了破产概率满足的Lundburg不等式.  相似文献   

8.
该文将经典风险模型推广到非时齐复合Poisson风险模型.首先,运用经典方法和时变方法,计算了该模型下的破产特征量,且得到了更新方程的解析表达式.其次,定义了时变后相应模型的一个广义的Gerber-Shiu函数,验证了时变方法对非时齐Poisson风险模型的有效性.最后,当单次索赔量服从指数分布时,计算了相应的破产概率和Gerber-Shiu函数.  相似文献   

9.
近年来,许多文献对经典风险模型及推广后的风险模型作了研究,并得出许多有用的结论.一般的文献都是假定保险公司的破产限为零.但在实际的保险业务中,当保险公司的盈余低于某一限度(破产限)时,保险公司就要调整政策或宣布破产.本文研究了带干扰的双Cox风险模型和带干扰的双Poisson风险模型在变破产限下的破产概率,得出了破产概率所满足的不等式,而且研究了当破产限为某一特殊函数时,破产概率所满足的不等式和具体的解析式.  相似文献   

10.
索赔次数为复合Poisson-Geometric过程的风险模型及破产概率   总被引:38,自引:1,他引:37  
本文引入一类复合Poisson-Geometric分布,这类分布包括两个参数,是普通Poisson分布的一种推广,并在保险中有其实际的应用背景;基于此分布产生一个计数过程,称之为复合Poisson-Geometric过程.本文着重研究了索赔次数为复合Poisson-Geometric过程的风险模型,这种模型是经典风险模型的一个推广.针对此模型,本文给出了破产概率公式及更新方程.作为特例,当索赔额服从指数分布时,给出了破产概率的显式表达式.  相似文献   

11.
本文先引入带干扰的双复合poisson风险模型,并利用正态近似和平移伽玛近似,将其推广为带干扰的连续型风险模型,最终得到破产概率公式及它的一个上界.  相似文献   

12.
本文考虑了常利力下带干扰的双复合Poisson风险过程, 借助微分和伊藤公式, 分别获得了无限时和有限时生存概率的积分微分方程. 当保费服从指数分布时, 得到了无限时生存概率的微分方程.  相似文献   

13.
双复合Poisson风险模型   总被引:14,自引:0,他引:14  
研究了保费收取过程是复合Po isson过程,索赔总额是复合Po isson过程的风险模型,给出了不破产概率的积分表示,以及在特殊情况下不破产概率的具体表达式,并用鞅方法得出了破产概率满足的Lundberg不等式和一般公式.  相似文献   

14.
We modify the compound Poisson surplus model for an insurer by including liquid reserves and interest on the surplus. When the surplus of an insurer is below a fixed level, the surplus is kept as liquid reserves, which do not earn interest. When the surplus attains the level, the excess of the surplus over the level will receive interest at a constant rate. If the level goes to infinity, the modified model is reduced to the classical compound Poisson risk model. If the level is set to zero, the modified model becomes the compound Poisson risk model with interest. We study ruin probability and other quantities related to ruin in the modified compound Poisson surplus model by the Gerber–Shiu function and discuss the impact of interest and liquid reserves on the ruin probability, the deficit at ruin, and other ruin quantities. First, we derive a system of integro-differential equations for the Gerber–Shiu function. By solving the system of equations, we obtain the general solution for the Gerber–Shiu function. Then, we give the exact solutions for the Gerber–Shiu function when the initial surplus is equal to the liquid reserve level or equal to zero. These solutions are the key to the exact solution for the Gerber–Shiu function in general cases. As applications, we derive the exact solution for the zero discounted Gerber–Shiu function when claim sizes are exponentially distributed and the exact solution for the ruin probability when claim sizes have Erlang(2) distributions. Finally, we use numerical examples to illustrate the impact of interest and liquid reserves on the ruin probability.   相似文献   

15.
Conditions for the convexity of compound geometric tails and compound geometric convolution tails are established. The results are then applied to analyze the convexity of the ruin probability and the Laplace transform of the time to ruin in the classical compound Poisson risk model with and without diffusion. An application to an optimization problem is given.  相似文献   

16.
This paper considers a bivariate compound Poisson model for a book of two dependent classes of insurance business. We focus on the ruin probability that at least one class of business will get ruined. As expected, general explicit expressions for this bivariate ruin probability is very difficult to obtain. In view of this, we introduce the so-called bivariate compound binomial model which can be used to approximate the finite-time survival probability of the assumed model. We then study some simple bounds for the infinite-time ruin probability via the association properties of the bivariate compound Poisson model. We also investigate the impact of dependence on the infinite-time ruin probability by means of multivariate stochastic orders.  相似文献   

17.
在随机利率风险模型中,将单险种推广为双险种,推导出风险调节系数和破产概率的一般表达式.  相似文献   

18.
In this paper we investigate the ruin probability in a general risk model driven by a compound Poisson process. We derive a formula for the ruin probability from which the Albrecher–Hipp tax identity follows as a corollary. Then we study, as an important special case, the classical risk model with a constant force of interest and loss-carried-forward tax payments. For this case we derive an exact formula for the ruin probability when the claims are exponential and an explicit asymptotic formula when the claims are subexponential.  相似文献   

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