条件随机场-CRF (1)

[1] https://blog.youkuaiyun.com/dcx_abc/article/details/78319246
[2] https://blog.youkuaiyun.com/wangyangzhizhou/article/details/78489593
[3] https://www.cnblogs.com/Determined22/p/6915730.html
[4] https://www.cnblogs.com/JohnRain/p/9250502.html
[5] https://blog.youkuaiyun.com/weixin_41911765/article/details/82465697
[6] https://blog.youkuaiyun.com/Scythe666/article/details/82021692
[7] https://mp.weixin.qq.com/s/1KAbFAWC3jgJTE-zp5Qu6g
[8] https://www.jiqizhixin.com/articles/2018-05-23-3