https://borgwang.github.io/ml/2019/07/28/gaussian-processes.html
http://www.gaussianprocess.org/gpml/chapters/RW.pdf
http://www.columbia.edu/~jwp2128/Teaching/E6892/papers/mlss2012_cunningham_gaussian_processes.pdf
https://github.com/borgwang/toys
https://www.jgoertler.com/visual-exploration-gaussian-processes/
https://mp.weixin.qq.com/s?__biz=MzA3MzI4MjgzMw==&mid=2650756950&idx=4&sn=eff13e168444e3b26205e5db7474e134&scene=0#wechat_redirect
