Results The model of the data in which outliers is detected and removed has a lower PRESS and a better fitness than that of the original data It is better to solve the outliers problem in PCR.

• 结果与未去除异常点时得到的回归方程相比较，具有较小的残差平方和，拟合效果较好。解决了主成分回归中存在异常点的问题。