刘建平的博客
https://www.cnblogs.com/pinard/p/6093948.html
图解最大熵
https://wanghuaishi.wordpress.com/2017/02/21/%E5%9B%BE%E8%A7%A3%E6%9C%80%E5%A4%A7%E7%86%B5%E5%8E%9F%E7%90%86%EF%BC%88the-maximum-entropy-principle%EF%BC%89/
逻辑斯谛回归与最大熵模型
http://www.hankcs.com/ml/the-logistic-regression-and-the-maximum-entropy-model.html
https://blog.csdn.net/u014688145/article/details/55003910