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中国管理科学 ›› 2008, Vol. 16 ›› Issue (3): 1-7.

• 论文 •    下一篇

多项式Copula方法对市场相关结构的分析

镇磊, 尹留志, 方兆本   

  1. 中国科学技术大学统计与金融系, 安徽合肥230026
  • 收稿日期:2007-03-12 修回日期:2008-04-10 出版日期:2008-06-30 发布日期:2008-06-30
  • 作者简介:镇磊(1983- ),男(汉族),湖北人,中国科技大学,博士研究生,研究方向:金融工程.

An Analysis to Dependence Patterns in a Polynomial Copula Approach

ZHEN Lei, YIN Liu-zhi, FANG Zhao-ben   

  1. Dept. of Statistics & Finance, University of Science & Technology of China, Hefei 230026, China
  • Received:2007-03-12 Revised:2008-04-10 Online:2008-06-30 Published:2008-06-30

摘要: Copula函数的出现解决了如何为描述市场相关性的问题,同时也为构建多元函数的联合分布提供了一种可行的方法。然而由于高维copula函数的拟合相对比较困难,本文首次通过对高维copula的Bernstein多项式展开,建立关于市场相关结构的多参数线性模型。然后将沪深两市的指数经过GARCH处理后,作为经验数据带入进行多项式回归。从而验证了运用多项式逼近来描述市场相关结构的方法是可行的。

关键词: 多项式Copula, Bernstein Copula, 相关结构, 契比雪夫多项式

Abstract: The development of copulas resolves the problem of description of dependence patterns,and it is a practicable method to construct multivariate probability distribution function.Because of the difficulty in approximation of mufti-dimensional copula,we study the modeling on dependence patterns of markets firstly with a mufti parametric linear regression framework equipped with the Bernstein polynomial expansion to the mufti-dimensional copula and estimate it with empirical data of Shanghai&Shenzhen Stock Market Comprising Indexes filtered with GARCH.Our result shows that.it is a feasible approach to describing the dependence patterns with the polynomial approximation.

Key words: polynomial copula, bernstein copula, dependence pattern, hebyshev polynomial

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