利用Matlab编程实现主成分分析,从数学角度来看，这是一种降维处理技术-Using Matlab programming principal component analysis, from a mathematical point of view, this is a dimension reduction process technology

UDP算法是一种基于流形学习的无监督降维算法，可以用来提取特征和可视化分析。(UDP algorithm is an unsupervised dimensionality reduction algorithm based on manifold learning, which can be used to extract features and visual analysis.)

该算法利用遗传算法实现了特征波长的提取，可以有效降维(The algorithm realizes the extraction of characteristic wavelengths by genetic algorithm and can effectively reduce dimension.)

DMD降维，分析复杂非定常流动的主要特征，特征提取(dynamic mode decomposition)