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非对称Possion跳——扩散模型的参数估计 被引量:4
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作者 王建稳 肖春来 《数理统计与管理》 CSSCI 北大核心 2005年第4期76-79,共4页
受有序样本聚类思想的启发,本文针对期权定价模型中的非对称Possion跳———扩散模型,提出了一种基于标的资产价格历史数据的参数估计方法,并得到了较好的结果。
关键词 跳——扩散模型 参数估计
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信用风险度量之结构型模型和简化型模型的比较与融合 被引量:1
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作者 张榆 鄢涛 《福州大学学报(哲学社会科学版)》 CSSCI 2007年第4期27-32,共6页
结构型模型认为违约是内生的,公司资产价值的变动是引起违约的唯一不确定性因素,但是,在该模型下,违约是可以预期的,不存在短期信用风险,这与实证结论不符。简化型模型克服了结构型模型与实证结论不符的缺点,但违约被假定为遵循一个外... 结构型模型认为违约是内生的,公司资产价值的变动是引起违约的唯一不确定性因素,但是,在该模型下,违约是可以预期的,不存在短期信用风险,这与实证结论不符。简化型模型克服了结构型模型与实证结论不符的缺点,但违约被假定为遵循一个外生的泊松过程,没有对违约进行明确的定义。在这两个模型的基础上,学术界提出了跳——扩散模型和不完全信息模型,对结构型模型和简化型模型进行融合。跳——扩散模型在传统的结构型模型中引入了资产价值的跳跃过程,并用简化型模型中的泊松过程来表示;不完全信息模型假定投资者获得的信息是不完全的,因此短期信用风险存在,并在传统的结构型模型中引入简化型模型中的违约强度。 展开更多
关键词 信用风险 结构型模型 简化型模型 跳——扩散模型 不完全信息模型
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Valuation of equity-indexed annuities with regime-switching jump diffusion risk and stochastic mortality risk 被引量:1
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作者 QIAN LinYi WANG RongMing WANG Shuai 《Science China Mathematics》 SCIE 2012年第11期2335-2346,共12页
This paper extends the model and analysis of Lin, Tan and Yang (2009). We assume that the financial market follows a regime-switching jump-diffusion model and the mortality satisfies Levy process. We price the point... This paper extends the model and analysis of Lin, Tan and Yang (2009). We assume that the financial market follows a regime-switching jump-diffusion model and the mortality satisfies Levy process. We price the point to point and annual reset EIAs by Esscher transform method under Merton's assumption and obtain the closed form pricing formulas. Under two cases: with mortality risk and without mortality risk, the effects of the model parameters on the EIAs pricing are illustrated through numerical experiments. 展开更多
关键词 compound poisson process Levy process stochastic mortality REGIME-SWITCHING equity-indexedannuity
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Reweighted Nadaraya-Watson estimation of jump-diffusion models 被引量:4
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作者 HANIF Muhammad WANG HanChao LIN ZhengYan 《Science China Mathematics》 SCIE 2012年第5期1005-1016,共12页
In this paper,we study the nonparametric estimation of the second infinitesimal moment by using the reweighted Nadaraya-Watson (RNW) approach of the underlying jump diffusion model.We establish strong consistency and ... In this paper,we study the nonparametric estimation of the second infinitesimal moment by using the reweighted Nadaraya-Watson (RNW) approach of the underlying jump diffusion model.We establish strong consistency and asymptotic normality for the estimate of the second infinitesimal moment of continuous time models using the reweighted Nadaraya-Watson estimator to the true function. 展开更多
关键词 continuous time model Harris recurrence jump-diffusion model local time nonparametric estimation RNW estimator
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Option Pricing for Coffee Price Using Jump Diffusion Models
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作者 Tesfahun BERHANE Molalign ADAM +1 位作者 Guriju AWGICHEW Eshetu HAILE 《Journal of Resources and Ecology》 CSCD 2020年第1期111-120,共10页
In this study,we aim at developing a model for option pricing to reduce the risks associated with Ethiopian coffee price fluctuations.We used daily closed Washed Sidama class A Grade3(WSDA3)coffee price recorded in th... In this study,we aim at developing a model for option pricing to reduce the risks associated with Ethiopian coffee price fluctuations.We used daily closed Washed Sidama class A Grade3(WSDA3)coffee price recorded in the period 31 May 2011 to 30 March 2018 obtained from Ethiopia commodity exchange(ECX)market to analyse the price fluctuation.The nature of log-returns of the price is asymmetric(negatively skewed)and exhibits high kurtosis.We used jump diffusion models for modeling and option pricing the coffee price.The method of maximum likelihood is applied to estimate the parameters of the models.We used the root mean square error(RMSE)to test the validation of the models.The values of RMSE for Merton’s and double exponential jump diffusion models are 0.1093 and 0.0783,respectively.These results indicate that the models fit the data very well.We used analytical and Monte Carlo technique to find the call option pricing of WSDA3 price.Based on the empirical results,we concluded that double exponential jump diffusion model is more efficient than Merton’s model for modeling and option pricing of this coffee price. 展开更多
关键词 jump diffusion model option pricing asymmetric leptokurtic feature risk-neutral measure WSDA3 coffee price
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