A multivariate Ornstein-Uhlenbeck type stochastic volatility model

A multivariate Ornstein-Uhlenbeck type stochastic volatility model
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多元 Ornstein-Uhlenbeck 型随机波动率模型

DOI:
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发表时间:
2009
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通讯作者:
R. Stelzer
R. Stelzer
中科院分区:
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文献类型:
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作者:
Christian Pigorsch;R. Stelzer

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利用Ornstein-Uhlenbeck型半正定过程,建立了一个多变量Ornstein-Uhlenbeck型随机波动率模型.我们得到了许多重要的统计和概率性质,例如完整的二阶结构和状态空间表示。值得注意的是,我们的许多结果被证明是有效的更一般的一类多变量随机波动率模型,这是由一个平稳和平方可积协方差矩阵过程。我们的研究结果,使估计和过滤的波动,我们最后证明了我们的模型的一个简短的实证说明。
Using positive semidefinite processes of Ornstein-Uhlenbeck type a multivariate Ornstein-Uhlenbeck (OU) type stochastic volatility model is introduced. We derive many important statistical and probabilistic properties, e.g. the complete second order structure and a state-space representation. Noteworthy, many of our results are shown to be valid for the more general class of multivariate stochastic volatility models, which are driven by a stationary and square-integrable covariance matrix process. For the OU type stochastic volatility our results enable estimation and filtering of the volatility which we finally demonstrate with a short empirical illustration of our model.