The sparseness of LS-SVM is thus obtained from the regression model to increase greatly the computation speed by way of removing most of the sample points in accordance to the Euclidian distances between input variables and sample points.

• 根据输入变量和样本点间欧氏距离的大小；去除回归模型中大部分的样本点；从而获得回归模型的“稀疏”特性；大大提高计算速度.