国际油气价格与汇率动态相依关系研究:基于一种新的时变最优Copula模型

被引:11
作者
姬强 [1 ]
刘炳越 [1 ,2 ]
范英 [3 ]
机构
[1] 中国科学院科技政策与管理科学研究所能源与环境政策研究中心
[2] 中国科学技术大学统计与金融系
[3] 北京航空航天大学经济管理学院
关键词
尾部相依; 跨市场协同运动; 时变最优Copula模型;
D O I
10.16381/j.cnki.issn1003-207x.2016.10.001
中图分类号
F224 [经济数学方法]; F416.22 [石油、天然气工业]; F831.6 [国际金融关系];
学科分类号
0701 ; 070104 ;
摘要
本文提出一个新的时变最优Copula模型,可以准确识别二元时间序列任意时点最优的相依结构。该模型构造了半旋转copula以刻画非对称的反向相依关系,并引入独立性的无分布检验证实相依关系的存在性。同时,我们对能源商品市场(原油、天然气)、外汇市场间动态相依关系进行了实证分析,实证结果表明跨市场相依结构类型确实是时变的,突发事件往往是相依结构突变的主因。另外,时变最优Copula模型的主要优势在于不仅能够捕捉相依方向和相依强度的动态性,还能有效捕捉相依结构类型的动态性。
引用
收藏
页码:1 / 9
页数:9
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