within-class scatter matrix 矩阵 ; 类内散度矩阵 ; 类别内散布矩阵
between-class scatter matrix 矩阵 ; 类别间散布矩阵 ; 类间散度矩阵
scatter matrix within class 类内离散度距阵
scatter matrix between class 类间离散度距阵
First, by redefining the within class scatter matrix and the between class scatter matrix, a new null space method was presented.
首先，通过重新定义样本的类内散布矩阵和类间散布矩阵，提出了一种新的零空间法。
Firstly space transform method was used to transform initial kernel between class scatter matrix and kernel total scatter matrix, so the kernel total scatter matrix became positive definition.
利用空间变换的有关理论，使得变换后的核总体散布矩阵满足非奇异性；
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