陈老师,您好!文献中一个多元线性回归方程出现两个R2,分别是“calibration”R2和“validation”R2,不太清楚这两个R2的区别?在SPSS输出的结果中,这两个R2分别指代什么?具体见文献截图。
文献中的内容:The regression analysis coefficients (R2) were determined as 0.87 for calibration and 0.76 for validation. There was no multi-collinearity (VIF=1.7-3.2) and the significance probability was less than 0.005. Therefore, this equationwas considered acceptable
|