统计研究 ›› 2007, Vol. 24 ›› Issue (4): 31-36.

• 论文 • 上一篇    下一篇

基于小波多分辨分析的高阶矩CAPM

许启发 王艳明   

  1. 山东工商学院统计学院
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-04-15 发布日期:2007-04-15

Research on High Moment CAPM based on Multiresolution Analysis of Wavelet

XU Qi-fa;WANG Yan-ming   

  • Received:1900-01-01 Revised:1900-01-01 Online:2007-04-15 Published:2007-04-15

摘要: 为改进传统Beta系数测量系统风险的不足,反映系统风险的动态特征,讨论了四阶矩的资本资产定价模型(CAPM)并将小波分析引入到高阶矩CAPM研究中。利用小波多分辨分析的特点,给出了小波高阶中心矩和高阶混合中心矩的定义,基于此给出了多分辨系统风险测度Beta、Gamma、Theta的计算方法和多分辨CAPM,并从行为金融理论出发,给出多分辨高阶矩CAPM的金融背景解释。实证结果支持了多分辨系统风险假说和多分辨高阶矩CAPM的成立,为构建动态投资组合分散金融风险的动态影响提供了证据。

关键词: 高阶矩, CAPM, 小波变换, 多分辨

Abstract: To advance Betas for measuring systematic risk and reflect dynamic character of risk, four moments CAPM and wavelet analysis are discussed at the same time in the paper. Based on multiresolution analysis, the definition of wavelet high central moments and high mixed central moments are put forward by us. Further more, methods for calculating Betas, Gammas and Thetas and multiresolution CAPM are established also, and the explaining is given by behavior finance theory. The empirical results hold out the hypothesis of multiresolution systematic risk and multiresolution CAPM, which provide experienced evidence for dynamic portfolio to disperse risk.

 

Key words: High Moments, CAPM, Wavelet Transform, Multiresolution