产生两类样本，每类样本两个特征。计算每类数据的均值点，并且把两个均值点连成一线段，用垂直平分该线段的直线作为分类边界。 随机给出一个样本并判别类别。 -Produce two types of samples, two samples of each type of feature. Calculating the mean of each type of data points, and the two average points in a line segment, the segm