中文说明：
偏最小二乘回归提供一种多对多线性回归建模的方法，特别当两组变量的个数很多，且都存在多重相关性，而观测数据的数量（样本量）又较少时，用偏最小二乘回归建立的模型具有传统的经典回归分析等方法所没有的优点。
English Description：
Partial least squares regression provides a multi to multi linear regression modeling method, especially when the number of two groups of variables is large, and there is multiple correlation, and the number of observation data (sample size) is small, the model established by partial least squares regression has the advantages that the traditional classical regression analysis methods do not have.