摘要
首次提出了基于广义误差分布(Generalized error d istribution,简称GED)的一类β-广义自回归条件异方差模型(Generalized Autoregressive Cond itional heteroscedastical,简称β-GARCH),给出了该模型的平稳遍历性和高阶矩的存在条件,在GED下,将时间序列尾部的特征融入到β-GARCH模型的参数估计之中,并给出了该模型估计的BHHH算法.
A new β - GARCH model with GED is proposed for modeling nonlinear time series. The conditions of stationarity and traversalability and high moments of the model are derived. The estimation of the β - GARCH parameters of the model take time series heavy- tailed nature into account,and it can be easily done through BHHH algorithm.
出处
《湖北民族学院学报(自然科学版)》
CAS
2006年第3期220-222,共3页
Journal of Hubei Minzu University(Natural Science Edition)
基金
国家自然科学基金资助项目(7047001)