我现在主要研究的是非负矩阵在特征提取方面的工作，上传几个我阅读的外国文献的，书籍源代码，在代码中有相应的文献或综述。我就上传一个low rank NMF的。压缩包里有9个文件。-I now mainly studied non-negative matrix feature extraction work, and upload a few I read foreign literature, books source code, there is a corresponding review