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arXiv 1603.01795math.STstat.MEstat.TH
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马尔可夫切换平滑转移GARCH模型

Markov Switching Smooth Transition GARCH Model

N. AleMohammad, S. Rezakhah, H. Hoseinalizadeh

摘要:

考虑了一个马尔可夫转换的非对称Gestival模型,该模型增加了负冲击的杠杆效应。研究了二阶矩的渐近行为,并计算了二阶矩的上界。通过Gibbs和griddy Gibbs抽样的baking策略被用来估计参数。最后通过两个实际数据集对模型的性能进行了研究。我们表明,该模型具有最好的样本拟合通过DIC,并提供了一个更好的预测时,负偏度是足够大的。

英文摘要:

A Markov switching asymmetric GARCH model which imposes more leverage effect of the negative shocks is considered. The asymptotic behavior of the second moment is investigated and an upper bound for it is calculated. A bayesian strategy through Gibbs and griddy Gibbs sampling is used to estimate the parameters. Finally we study the performance of the model by two real data sets. We show that this model has the best in-sample fit via DIC and provides a better forecast when the negative skewness is large enough.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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