隐因子分解机Factorization Machine【http://www. w2bc. com/article/113916】
https://my.oschina.net/keyven/blog/648747
http://www.cnblogs.com/hxsyl/p/5255427.html
http://blog.csdn.net/google19890102/article/details/45532745/
原文：http://www.cnblogs.com/aaronhoo/p/5924375.html