https://zhuanlan.zhihu.com/p/25303529
http://blog.csdn.net/rav009/article/details/12220977
http://www.cnblogs.com/Finley/p/6358097.html
http://www.cnblogs.com/en-heng/p/6164145.html
http://blog.csdn.net/whzhcahzxh/article/details/17524785
https://github.com/fxsjy/jieba/tree/v0.36
http://blog.csdn.net/liujianfei526/article/details/50640176
