ICode9

有四个激活函数 import matplotlib.pyplot as plt import numpy as np x = np.linspace(-10,10) y_sigmoid = 1/(1+np.exp(-x)) y_tanh = (np.exp(x)-np.exp(-x))/(np.exp(x)+np.exp(-x)) fig = plt.figure() #plot sigmoid ax = fig.add_subplot(221) ax.plot(x,y_sigmoid) a