似然概率https://blog.csdn.net/u014182497/article/details/82252456
后验和先验https://blog.csdn.net/qq_23947237/article/details/78265026#fn1
协方差矩阵https://blog.csdn.net/xiao_lxl/article/details/72730000
相关博客整理
原文：https://www.cnblogs.com/oldby/p/10688843.html
