https://blog.csdn.net/w450468524/article/details/54885773
numpy数组中按照特征值对特征向量进行排序
https://www.cnblogs.com/lucas-zhao/p/11697203.html
argsort
https://www.jb51.net/article/174648.htm
正态分布、正态分布采样
https://blog.csdn.net/u010758410/article/details/78158781
standardscaler
https://www.cnblogs.com/lvdongjie/p/11349701.html
normalization
