本题感谢大神 https://blog.youkuaiyun.com/Snoopy_Yuan/article/details/64443841
#抄https://blog.youkuaiyun.com/Snoopy_Yuan/article/details/64443841
import numpy as np
import pandas as pd
inputfile='/Users/huatong/PycharmProjects/Data/xiguaexcel.xls'
data_original=pd.read_excel(inputfile)
x=data_original.values[:,1:3]
y=data_original.values[:,3]
#计算均值向量μ
u=[]
for i in range(2): #2个分类的样本分别求均值,μ0,μ1各包含两个元素,
u.ap