2020-10-07
计算sigmoid函数A
import numpy as np
w=np.random.randint(6,size=(1,4))
x1=np.random.randint(6,size=(1,4))
x2=np.random.randint(6,size=(1,4))
x3=np.random.randint(6,size=(1,4))
x4=np.random.randint(6,size=(1,4))
X=np.array(【x1,x2,x3,x4】).reshape(4,4).T
b=np.random.randint(8,size=(1,1))
z=np.dot(w,X)+b
A=1/(1+np.exp(-z))
附图：