统计研究 ›› 2011, Vol. 28 ›› Issue (5): 78-83.

• 论文 • 上一篇    下一篇

中国季度GDP的季节调整:结构时间序列方法

王群勇   

  • 出版日期:2011-05-15 发布日期:2011-05-20

Seasonal Adjustment of China Quarterly GDP

Wang Qunyong   

  • Online:2011-05-15 Published:2011-05-20

摘要: 内容提要:本文利用结构时间序列方法讨论了中国季度GDP的季节调整问题,从季节单位根、季节自相关、周期自相关等多个方面对不同季节模式的调整结果进行了比较。结论认为,随机虚拟变量形式和三角函数形式得到的调整结果非常相似;结构时间序列方法更好地捕捉到了时变季节特征,明显优于X-11和SEATS方法;非高斯稳健季节调整的结果表明,高斯结构时间序列方法具有较好的稳定性。

关键词: 关键词:季节调整, 结构时间序列, 状态空间形式, 非高斯分布

Abstract: Abstract:The paper analyzes the seasonal adjustment of GDP in China. We compare the adjustment through seasonal unit root, seasonal autocorrelation, periodic autocorrelation etc. Several important conclusions are drawn: the stochastic dummy variables form and trigonometric form get the similar results; the structural time series model captures the time-varying seasonality more precisely than X11 and SEATS; non-Gaussian model reveals that the Gaussian structural time series method is robust for seasonal adjustment.

Key words: Key words: Seasonal Adjustment, Structural Time Series, State Space Form, Non-Gaussian Distribution