nn02 - 経済統計練習帳

import math
 
def f(xx):
    f1=1+math.exp(-1*xx)
    return 1/f1
 
 
y=[0,0,0,1,1]
x=[[2,3],[4,5],[5,2],[1,7],[2,2]]
print(x)
a=[-2,0.7,0.5]
 
ys=[0,0,0,0,0]
 
for i in range(5):
    y1=a[0]
    for j in range(2):
        y1=y1+a[j+1]*x[i][j]
    ys[i]=y1
 
print(f(ys[1]))