摘要
首先给出了描述相依结构的混合Copula模型,然后给出寻求混合Copula模型的EM算法,最后以中国股市的实际数据进行了实证分析,说明混合Copula模型是可以用来描述中国股市的相依结构.
Firstly, a mixed Copulas model is given. Then an EM algorithm which is used to get the mixed Copulas is obtained. Finally, a real data analysis for the data in Chinese stock market is conducted. The results show that the dependent structures in Chinese stock market can be depicted by mixed Copulas model.
出处
《数学的实践与认识》
CSCD
北大核心
2007年第20期14-18,共5页
Mathematics in Practice and Theory