tf-idf用于文档聚类，权重计算，用MATLAB实现的，自己编写非常好用！,tf-idf for Document Clustering, weight calculation, use MATLAB to achieve, I have written is very easy to use!

the mathlab source code for documents classification

PCA(主成分分析)的MATLAB源代码，包含测试例子及使用文档，该算法主要用于图像分类时特征的降维。-PCA (Principal Component Analysis) of the MATLAB source code, including test case and use the document, the algorithm is mainly used for image classification and feature dimensionality reduction.