WEEK 7 Principal Component Analysis, Self-Organizing Maps, Network-Based Clustering and Hierarchical
PrincipalComponentAnalysis(PCA)-Part1mean-平均值Variance-方差:MeasureofthespreadofthedataCovariance协方差Measureoftheco-dependenceoftworandomvariables特征值和特征向量,矩阵PrincipalComponentAnalysis(PCA)-Part2▶PCAisamet