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利率相依的离散时间保险风险模型的破产问题 总被引:3,自引:0,他引:3
本文对利率具有一阶自回归的离散时间风险模型进行了研究,得到了破产前最大盈余的分布,破产前盈余、破产后赤字与破产前最大盈余的联合分布以及首达某一水平x的时间分布的递推公式. 相似文献
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该文讨论了索赔时间间隔与索赔量相关且带干扰的风险模型. 借助拉普拉斯变换研究了此模型的破产时刻、破产前瞬间盈余及破产时赤字三者的联合分布,得到了此联合分布拉普拉斯变换的一个分析表达式并讨论了当初始盈余值趋于无穷大时,此联合分布的渐近表达式. 相似文献
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本文应用M arkov骨架过程方法,研究了带干扰的理赔为一般到达的保险风险模型,得到了破产时间与破产时刻前后资产盈余的联合分布以及破产时间的分布. 相似文献
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本文主要研究常利率下的 Erlang(2 )风险模型的破产前瞬间盈余分布 ,破产时赤字分布 ,以及它们的联合分布 . 相似文献
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考虑了一类离散相依的风险模型,该模型假设主索赔以一定的概率引起两种副索赔,而第一种副索赔有可能延迟发生.通过引入一个辅助模型,分别得出了该风险模型初始盈余为0时破产前盈余与破产时赤字的联合分布的表达式、初始盈余为"时破产前盈余和破产时赤字的联合分布的递推公式、初始盈余为0时的破产概率,以及初始盈余为"时的破产概率求解方... 相似文献
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稀疏过程的三特征的联合分布函数 总被引:1,自引:0,他引:1
本文考虑一类人寿保险,保费到达为Po isson过程,索赔到达为p-稀疏过程,我们推导三特征的联合分布函数;破产时间,破产概率,破产前的盈余,破产赤字,并由这联合分布得破产概率的显示表达式. 相似文献
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我们考虑既带有随机干扰又带有确定投资回报的风险过程, 得到了破产前瞬间盈余的分布$F_{\delta}(u,x)$及破产前瞬间盈余和破产时赤字的联合分布$H_{\delta}(u,x,y)$所满足的积分表达, 连续性及二次连续可微性和积分--微分方程. 同时, 只有随机干扰的风险模型下的破产前瞬间盈余的分布及破产前瞬间盈余和破产时赤字的联合分布所满足的性质也被得到. 已有文献中的诸多有关结果均可以通过令我们结论中的某些参数特殊化为零而得到. 相似文献
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Chun-sheng ZHANG Lian-zeng ZHANG Rong WUDepartment of Mathematics Nankai University Tianjing China 《应用数学学报(英文版)》2002,18(1):153-160
Abstract In the present paper surplus process perturbed by diffusion are considered.The distributions ofthe surplus immediately before and at ruin corresponding to the probabilities of ruin caused by oscillation andruin caused by a claim are studied.Some joint distribution densities are obtained.Techniques from martingaletheory and renewal theory are used. 相似文献
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In this paper, we study absolute ruin questions for the perturbed compound Poisson risk process with investment and debit
interests by the expected discounted penalty function at absolute ruin, which provides a unified means of studying the joint
distribution of the absolute ruin time, the surplus immediately prior to absolute ruin time and the deficit at absolute ruin
time. We first consider the stochastic Dirichlet problem and from which we derive a system of integro-differential equations
and the boundary conditions satisfied by the function. Second, we derive the integral equations and a defective renewal equation
under some special cases, then based on the defective renewal equation we give two asymptotic results for the expected discounted
penalty function when the initial surplus tends to infinity for the light-tailed claims and heavy-tailed claims, respectively.
Finally, we investigate some explicit solutions and numerical results when claim sizes are exponentially distributed. 相似文献
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In this paper, we study a discrete time risk model with random interest rate. The convergence of the discounted surplus process is proved by using martingale techniques, an expression of ruin probability is obtained, and bounds for ruin probability are included. In the second part of the paper, the distribution of surplus immediately after ruin, the distribution of surplus just before ruin, the joint distribution of the surplus immediately before and after ruin, and the distribution of ruin time are discussed. 相似文献
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The Asymptotic Estimate of Absolute Ruin Probabilities in the Renewal Risk Model with Constant Force of Interest 下载免费PDF全文
In this paper, absolute ruin problems
for a kind of renewal risk model with constant interest force are
studied. For certain situations of the claim distribution with heavy
tail, consider the surplus of the arrival time, and discrete the
surplus process, then use the method of renewal function and
convolution, we present the asymptotic properties of absolute ruin
probability when the initial surplus tends to infinity. 相似文献
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考虑一类具有相依结构的离散时间风险过程,其中利率和保费收入过程为两个不同的自回归移动平均模型.利用更新递归方法,得到了破产前盈余与破产后赤字的联合分布和破产持续时间分布的递归计算公式. 相似文献
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In this paper, we discuss the insurance risk models of general arrrival of claims with con-stant interest force, prove that the surplus process {Xб(Tn), n≥0} at claim occurrence times T. is ahomogeneous Markov skeleton one,and give the distribution of surplus assets prior to and ruin andthe joint distrubutions of the ruin time and them. 相似文献
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On the analysis of the Gerber-Shiu discounted penalty function for risk processes with Markovian arrivals 总被引:1,自引:0,他引:1
Soohan Ahn 《Insurance: Mathematics and Economics》2007,41(2):234-249
In this paper, we consider an insurance risk model governed by a Markovian arrival claim process and by phase-type distributed claim amounts, which also allows for claim sizes to be correlated with the inter-claim times. A defective renewal equation of matrix form is derived for the Gerber-Shiu discounted penalty function and solved using matrix analytic methods. The use of the busy period distribution for the canonical fluid flow model is a key factor in our analysis, allowing us to obtain an explicit form of the Gerber-Shiu discounted penalty function avoiding thus the use of Lundberg’s fundamental equation roots. As a special case, we derive the triple Laplace transform of the time to ruin, surplus prior to ruin, and deficit at ruin in explicit form, further obtaining the discounted joint and marginal moments of the surplus prior to ruin and the deficit at ruin. 相似文献