단일 뉴런(simple neuron)

import numpy as np

import matplotlib.pyplot as plt

X = np.arange(-1.0, 1.0, 0.2)

Y = np.arange(-1.0, 1.0, 0.2)

Z = np.zeros((10,10))

w_x = 2.5

w_y = 3.0

bias = 0.1

for i in range(10):

    for j in range(10):

       

        u = X[i]*w_x+Y[j]*w_y+bias

       

        y = 1/(1+np.exp(-u))

        Z[j][i] = y

       

plt.imshow(Z, "gray", vmin = 0.0, vmax = 1.0)

plt.colorbar()

plt.show()