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Sigmoid function of activation function

2022-04-23 11:40:00 【Hey, little black 15kg】

sigmoid function 

import matplotlib.pyplot as plt
import numpy as np


def sigmoid(x):
    return 1 / (1 + np.exp(-x))


if __name__ == '__main__':
    x = np.arange(-5, 5, 0.1)
    y = sigmoid(x)

    plt.plot(x, y)
    plt.ylim(-0.1, 1.1)
    plt.show()

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