《On the Depletion Problem for an Insurance Risk Process: New Non-ruin
Quantities in Collective Risk Theory》
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作者:
Zied Ben-Salah, H\\\'el\\`ene Gu\\\'erin, Manuel Morales and Hassan Omidi
Firouzi
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最新提交年份:
2014
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英文摘要:
The field of risk theory has traditionally focused on ruin-related quantities. In particular, the socalled Expected Discounted Penalty Function has been the object of a thorough study over the years. Although interesting in their own right, ruin related quantities do not seem to capture path-dependent properties of the reserve. In this article we aim at presenting the probabilistic properties of drawdowns and the speed at which an insurance reserve depletes as a consequence of the risk exposure of the company. These new quantities are not ruin related yet they capture important features of an insurance position and we believe it can lead to the design of a meaningful risk measures. Studying drawdowns and speed of depletion for L\\\'evy insurance risk processes represent a novel and challenging concept in insurance mathematics. In this paper, all these concepts are formally introduced in an insurance setting. Moreover, using recent results in fluctuation theory for L\\\'evy processes, we derive expressions for the distribution of several quantities related to the depletion problem. Of particular interest are the distribution of drawdowns and the Laplace transform for the speed of depletion. These expressions are given for some examples of L\\\'evy insurance risk processes for which they can be calculated, in particular for the classical Cramer-Lundberg model.
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中文摘要:
传统上,风险理论领域主要关注与破产相关的数量。特别是,多年来,人们对所谓的预期贴现惩罚函数进行了深入的研究。尽管与破产有关的数量本身就很有趣,但它们似乎并没有捕捉到保护区的路径依赖性质。在本文中,我们的目的是展示提取的概率特性,以及保险准备金因公司风险敞口而耗尽的速度。这些新的数量与破产无关,但它们捕捉到了保险头寸的重要特征,我们相信这可以导致设计有意义的风险度量。研究列维保险风险过程的提取和消耗速度代表了保险数学中一个新颖且具有挑战性的概念。在本文中,所有这些概念都是在保险环境中正式引入的。此外,我们利用最近在列维过程涨落理论中的结果,导出了与耗尽问题有关的几个量的分布表达式。特别有趣的是水位下降的分布和消耗速度的拉普拉斯变换。这些表达式是针对可以计算的列维保险风险过程的一些例子给出的,特别是对于经典的Cramer-Lundberg模型。
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分类信息:
一级分类:Quantitative Finance 数量金融学
二级分类:Risk Management 风险管理
分类描述:Measurement and management of financial risks in trading, banking, insurance, corporate and other applications
衡量和管理贸易、银行、保险、企业和其他应用中的金融风险
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一级分类:Mathematics 数学
二级分类:Probability 概率
分类描述:Theory and applications of probability and stochastic processes: e.g. central limit theorems, large deviations, stochastic differential equations, models from statistical mechanics, queuing theory
概率论与随机过程的理论与应用:例如中心极限定理,大偏差,随机微分方程,统计力学模型,排队论
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