在Johansen检验中,需要选择检验的确定性趋势假设,即“deterministic trend assumption of test”。这里的6项应该根据什么来选择呢?是根据原序列的形式,还是原序列一阶差分的形式呢?有些资料上说可以逐项尝试然后根据“相关结果”选择最优的,但是“相关结果”指的是什么呢?还望赐教!
在VAR模型中分析协整关系的分析方法越来越流行了,Eviews也在分析中广泛应用,但是,在进行协整向量的Johansen检验时总遇到5个模型如何选择的问题。看了很多教材,对此都语焉不详。于是只好再看外文。很多文章采用“Pantula principle”,这一准则的出处在《Determination of cointegration rank in the presence of a linear trend》,Oxford Bulletin of Economics and Statistics, 54(3), 1992, 383-397。很遗憾,此文原文未能找到,所以只能根据网上其他文献的表述来描述Pantula准则。
参考文献:John Beirne, Real Exchange Rate Dynamics and Monetary Integration in Crisis-Affected Regions, Journal of International and global Economic Studies,1(2),December 2008,1-25
Date: 12/04/15 Time: 13:37
Sample: 1985 2013
Included observations: 27
Series: LS LFIR LSEC LTHI
Lags interval: 1 to 1
Selected (0.05 level*) Number of Cointegrating Relations by Model
Data Trend: None None Linear Linear Quadratic
Test Type No Intercept Intercept Intercept Intercept Intercept
No Trend No Trend No Trend Trend Trend
Trace 4 1 0 1 1
Max-Eig 1 1 0 1 1
*Critical values based on MacKinnon-Haug-Michelis (1999)
Information Criteria by Rank and Model
Data Trend: None None Linear Linear Quadratic
Rank or No Intercept Intercept Intercept Intercept Intercept
No. of CEs No Trend No Trend No Trend Trend Trend