机器学习
http://blog.jobbole.com/67616/
http://blog.csdn.net/baigoocn/article/details/38437901
http://www.360doc.com/content/14/0818/12/15077656_402798025.shtml
http://www.cnblogs.com/hellochennan/p/5423740.html
http://mp.weixin.qq.com/s?__biz=MjM5OTAzMjc4MA==&mid=2650065956&idx=1&sn=05ad29dd7696d4b033d0706630045d11&chksm=bec1ce8789b647914180c30f3810134bfa30231abed7b0986f86628eaafab895cd119691a34f&scene=21#wechat_redirect