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多元变量的层次化嵌套Copula模型研究

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摘要 为研究多元变量间的复杂相关关系,突破层次化Archimedean Copula模型只能选择ArchimedeanCopula函数的限制,文章提出了一般意义上的层次化嵌套Copula模型。给出了层次化嵌套Copula函数的定义、性质,以及模型构建方法和步骤。采用该方法对一投资组合建模,并与层次化Archimedean Copula建模结果对比。实证研究表明,层次化嵌套Copula模型的建模效果更好。
作者 刘澄 张玲
出处 《统计与决策》 CSSCI 北大核心 2014年第22期20-24,共5页 Statistics & Decision
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参考文献7

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