PCA特征提取。LDA降维的人脸识别代码。可用作为初学者使用。-PCA feature extraction. Face recognition code LDA dimensionality reduction. Available for beginners to use.

子空间学习方法工具箱，包含PCA、LDA、LLE、ISOMAP等经典子空间分析方法(Subspace learning method toolbox, including classical subspace analysis methods such as PCA, LDA, LLE, ISOMAP and so on)