分类算法将Iris分为三种类型(Setosa, Versicolour, Virginica),找出特征属性占比较大的几个属性，然后对数据进行降维以便于聚类分析，最终将数据分类。(The classification algorithm divides Iris into three types (Setosa, Versicolour, Virginica) to find a few attributes of characteristic attributes, and then reduce the data to facilitate clustering analysis, and finally classify the data.)