In NIR spectroscopy, most of the variables are uninformative with respect to the given problem.In this context, the different subsets of X to be use of in the PLS regression were selected.

• 近红外光谱法在对含能材料成分的分析中采用不同波数以及不同区间的变量,并用偏最小二乘法建立数学模型。