问题描述：现在手头有两个组的相关系数矩阵，包括均值和方差。现在要进行多组一致性检验，怎么样对两个模型进行限制？
比如蔡华俭的那篇论文里进行的多组分析。相应的数据已添加附件。
DATA:     FILE IS net.txt;
type is MEANS STDEVIATIONS CORRELATION;
NOBSERVATIONS = 418;
VARIABLE: NAMES A



RE s1-s5;
          USEVARIABLES s1-s5;
ANALYSIS: ESTIMATOR = ML;
MODEL:    F1 BY s1-s5;
s2 with s4;
OUTPUT:   SAMPSTAT TECH1 MODINDICES;

DATA:     FILE IS paper.txt;
type is MEANS STDEVIATIONS CORRELATION;
NOBSERVATIONS = 284;
VARIABLE: NAMES ARE s1-s5;
          USEVARIABLES s1-s5;
ANALYSIS: ESTIMATOR = ML;
MODEL:    F1 BY s1-s5;
OUTPUT:   SAMPSTAT TECH1 MODINDICES;