An approach to modelling volatile financial return series using stationary d-vine copula processes combined with Lebesgue-measure-preserving transformations known as v-transforms is proposed. By developing a method of stochastically inverting v-transforms, models are constructed that can describe both stochastic volatility in the magnitude of price movements and serial correlation in their directions. In combination with parametric marginal distributions it is shown that these models can rival and sometimes outperform well-known models in the extended GARCH family.
翻译:提议采用固定的d-vine cocula 进程,加上称为 v- transforms的Lebesgue-conference-pressive-pressive 变换,来模拟波动性金融回报系列。通过开发一种对 v- transforms 进行随机反转的方法,模型的构建既能描述价格波动幅度的随机波动性,又能描述其方向上的序列关联性。与参数边际分布相结合,可以证明这些模型可以与GACCH大家庭中众所周知的模式相匹配,有时甚至优于这些模型。