NMF（非负矩阵分解）算法

开源工具

http://m.blog.csdn.net/blog/oJiMoDeYe12345/21024149

公式、matlab编码

http://www.cnblogs.com/tiandsp/archive/2012/11/13/2768597.html

http://fxy1211.blog.163.com/blog/static/68255322007826111015905/

http://blog.csdn.net/acdreamers/article/details/44663421