PCA(主成分分析法)、LDA(线性判别法)两种方法是主要的线性降维法，有很好的效果，希望对大家能够有用！-PCA (Principal Component Analysis), LDA (Linear Discriminant method) two methods are the main linear dimensionality reduction method, have very good results, in the hope that everyone can be usefu

主成分分析PCA降维，欧氏距离分类，训练与测试与识别完整的流程-Principal component analysis PCA dimension reduction, Euclidean distance classification, training and testing and identification process complete