通径分析与灰色关联分析的比较

Comparison of Path coefficent Analysis and Grey system Relevant Analysis

利用两组试验数据对通径分析与灰色关联度分析进行了比较。结果表明：通径分析是在考虑自变数间相互关系的基础上进行的，而灰色关联分析未考虑自变数间的关系。采用两种方法分析同一数据得出的自变量相对重要性位次不同，但关联度位序与相关系数绝对值的位次基本一致。

The data from two experiments were used to compare Path coefficent Analysis(PCA)and Grey system Relevant Analysis(GSRA).The results showed that PCA revealed the relations between depedent variable and indepedent variable based on the interactions among indepedent variables.And in GSRA,the interactions among of indepedent variables were not considered.The two methods drew different conclusions from same data.And the grey interconnect grade was comparable with the correlation coefficent in order.