网址

http://binhua.info/machinelearning/%E6%A2%AF%E5%BA%A6%E4%B8%8B%E9%99%8D%E6%B7%B1%E5%85%A5%E6%B5%85%E5%87%BA

http://www.tuicool.com/articles/ZbMBjm

http://m.blog.csdn.net/article/details?id=51039334

http://blog.csdn.net/lu597203933/article/details/46575803

http://blog.csdn.net/lu597203933/article/details/46575871