Normal mixture GARCH(1,1): applications to exchange rate modelling
正态混合 GARCH(1,1):汇率建模应用AI 解读 ↓
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AI 根据所提供的论文材料归类:摘要以汇率的 GARCH 条件方差、偏度和峰度动态为研究核心,直接对应金融波动率建模方向。
正态混合 GARCH(1,1):汇率建模应用AI 解读 ↓
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Abstract Some recent specifications for GARCH error processes explicitly assume a conditional variance that is generated by a mixture of normal components, albeit with some parameter restrictions. This paper analyses the general normal mixture GARCH(1,1) model which can capture time variation in both conditional skewness and kurtosis. A main focus of the paper is to provide evidence that, for modelling exchange rates, generalized two‐component normal mixture GARCH(1,1) models perform better than those with three or more components, and better than symmetric and skewed Student's t ‐GARCH models. In addition to the extensive empirical results based on simulation and on historical data on three US dollar foreign exchange rates (British pound, euro and Japanese yen), we derive: expressions for the conditional and unconditional moments of all models; parameter conditions to ensure that the second and fourth conditional and unconditional moments are positive and finite; and analytic derivatives for the maximum likelihood estimation of the model parameters and standard errors of the estimates. Copyright © 2006 John Wiley & Sons, Ltd.
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