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arXiv 1402.2882math.PR
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具有随机波动的平稳多重自相似随机场

Stationary and multi-self-similar random fields with stochastic volatility

Almut E. D. Veraart

摘要:

本文引入了平稳的多重自相似随机场,它能解释随机波动率,并具有G型边际律。利用波动率调制的混合移动平均场构造平稳随机场,并讨论其概率性质。此外,两种方法参数化的权函数的移动平均表示:一种方法是基于傅立叶技术,旨在重现一个给定的相关结构,另一种方法是基于随机偏微分方程的思想。利用广义Lamperti变换,构造了具有G型分布的波动调制多自相似随机场.

英文摘要:

This paper introduces stationary and multi-self-similar random fields which account for stochastic volatility and have type G marginal law. The stationary random fields are constructed using volatility modulated mixed moving average fields and their probabilistic properties are discussed. Also, two methods for parameterising the weight functions in the moving average representation are presented: One method is based on Fourier techniques and aims at reproducing a given correlation structure, the other method is based on ideas from stochastic partial differential equations. Moreover, using a generalised Lamperti transform we construct volatility modulated multi-self-similar random fields which have type G distribution.

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