数学
https://web.stanford.edu/~jurafsky/slp3/
点击下载
https://www.probabilitycourse.com/chapter11/11_1_2_basic_concepts_of_the_poisson_process.php
Newton's Method and Fisher Scoring
https://hua-zhou.github.io/teaching/biostatm280-2017spring/slides/18-newton/newton.html
https://stackoverflow.com/questions/12066761/what-is-the-difference-between-gradient-descent-and-newtons-gradient-descent
http://www.whudj.cn/?p=1042