《Long-time trajectorial large deviations for affine stochastic volatility
models and application to variance reduction for option pricing》
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作者:
Zorana Grbac, David Krief, Peter Tankov
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最新提交年份:
2018
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英文摘要:
This work extends the variance reduction method for the pricing of possibly path-dependent derivatives, which was developed in (Genin and Tankov, 2016) for exponential L\\\'evy models, to affine stochastic volatility models (Keller-Ressel, 2011). We begin by proving a pathwise large deviations principle for affine stochastic volatility models. We then apply a time-dependent Esscher transform to the affine process and use Varadhan\'s lemma, in the fashion of (Guasoni and Robertson, 2008) and (Robertson, 2010), to approximate the problem of finding the Esscher measure that minimises the variance of the Monte-Carlo estimator. We test the method on the Heston model with and without jumps to demonstrate the numerical efficiency of the method.
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中文摘要:
这项工作将(Genin和Tankov,2016)中针对指数L掼evy模型开发的可能路径依赖衍生品定价的方差缩减方法扩展到仿射随机波动率模型(Keller-Ressel,2011)。我们首先证明了仿射随机波动率模型的路径大偏差原理。然后,我们将时间相关的Esscher变换应用于仿射过程,并以(Guasoni和Robertson,2008)和(Robertson,2010)的方式使用Varadhan引理来近似寻找最小化蒙特卡罗估计量方差的Esscher测度的问题。我们在有无跳跃的Heston模型上验证了该方法的数值效率。
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分类信息:
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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一级分类:Quantitative Finance 数量金融学
二级分类:Mathematical Finance 数学金融学
分类描述:Mathematical and analytical methods of finance, including stochastic, probabilistic and functional analysis, algebraic, geometric and other methods
金融的数学和分析方法,包括随机、概率和泛函分析、代数、几何和其他方法
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