1、自然语言处理中 perplexity(困惑度)的讲解:https://blog.youkuaiyun.com/index20001/article/details/78884646
数学意义困惑度讲解:https://blog.youkuaiyun.com/jiaqiang_ruan/article/details/77989459?locationNum=2&fps=1
2、N-gram模型详解:https://blog.youkuaiyun.com/taoqick/article/details/70755688
3、log-linear模型详解:https://www.cnblogs.com/ironstark/p/5040191.html
https://blog.youkuaiyun.com/h2026966427/article/details/79930917
4、probability-wiki:https://en.wikipedia.org/wiki/Probability(和静态机器翻译有关)