共查询到18条相似文献,搜索用时 93 毫秒
1.
2.
3.
带干扰的双复合Poisson风险模型 总被引:1,自引:0,他引:1
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
4.
本文将古典风险模型推广为带干扰的一类相依风险模型。在此风险模型中,保单到达过程为一Pois-son过程,而索赔到达过程为保单到达过程的P-稀疏过程。利用鞅的方法得到了破产概率和Lundberg不等式。 相似文献
5.
6.
7.
带干扰的多险种Cox风险模型的破产概率 总被引:1,自引:0,他引:1
考虑到保险公司在实际经营中收益所具有的不确定性和风险经营的多元化,建立了一个更现实的风险模型即带干扰的多险种Cox风险模型.运用鞅论得到了该模型最终破产概率的上界,并对Lundberg不等式作了推广. 相似文献
8.
带干扰的索赔次数为复合Poisson-Geometric过程的负风险和模型 总被引:2,自引:0,他引:2
引进带干扰的索赔次数为复合Poisson-Geometric过程的负风险和模型,给出该模型的破产概率所满足的积分-微分方程及解析式. 相似文献
9.
本文考虑一类带干扰的两独立险种的风险模型,其中两索赔次数过程分别为Poisson过程和Elang(2)过程.主要得出该模型的生存概率所满足的积分-微分方程和破产概率的渐近性. 相似文献
10.
带干扰的双二项风险模型的破产概率 总被引:4,自引:0,他引:4
首先将[3]的双二项风险模型推广到带干扰项的一种新模型,然后讨论了盈余过程的性质,并利用盈余过程的性质给出了有关破产概率的两个结论。 相似文献
11.
12.
13.
We consider a risk-based asset allocation problem in a Markov, regime-switching, pure jump model. With a convex risk measure of the terminal wealth of an investor as a proxy for risk, we formulate the risk-based asset allocation problem as a zero-sum, two-person, stochastic differential game between the investor and the market. The HJB dynamic programming approach is used to discuss the game problem. A semi-analytical solution of the game problem is obtained in a particular case. 相似文献
14.
本文讨论马氏环境下带随机扰动的保单数量过程与索赔次数过程Cox相关的风险模型.利用鞅方 法,给出了该风险模型的破产概率的指数上界. 相似文献
15.
Firms should keep capital to offer sufficient protection against the risks they are facing. In the insurance context methods have been developed to determine the minimum capital level required, but less so in the context of firms with multiple business lines including allocation. The individual capital reserve of each line can be represented by means of classical models, such as the conventional Cramér–Lundberg model, but the challenge lies in soundly modelling the correlations between the business lines. We propose a simple yet versatile approach that allows for dependence by introducing a common environmental factor. We present a novel Bayesian approach to calibrate the latent environmental state distribution based on observations concerning the claim processes. The calibration approach is adjusted for an environmental factor that changes over time. The convergence of the calibration procedure towards the true environmental state is deduced. We then point out how to determine the optimal initial capital of the different business lines under specific constraints on the ruin probability of subsets of business lines. Upon combining the above findings, we have developed an easy-to-implement approach to capital risk management in a multi-dimensional insurance risk model. 相似文献
16.
《Operations Research Letters》2020,48(2):130-135
We consider the utility-based portfolio selection problem in a continuous-time setting. We assume the market price of risk depends on a stochastic factor that satisfies an affine-form, square-root, Markovian model. This financial market framework includes the classical geometric Brownian motion, CEV model, and Heston’s model as special cases. Adopting the BSDE approach, we obtain closed-form solutions for the optimal portfolio strategies and value functions for the logarithmic, power, and exponential utility functions. 相似文献
17.
18.
本文研究了一类特殊的更新风险过程,其索赔时间间隔服从混合指数分布.首先,建立保险公司在时刻t的资产盈余模型,然后在该模型的基础上,根据Gerber的积分微分方程法和Laplace变换计算该公司的生存概率和赤字分布,最后分析盈余过程能顺利达到某一水平而不发生破产的概率. 相似文献