trekhleb--homemade-machine-learning
Oleksii Trekhleb
10 行
218 B
Python
10 行
218 B
Python
"""Sigmoid gradient function"""
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from .sigmoid import sigmoid
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def sigmoid_gradient(matrix):
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"""Computes the gradient of the sigmoid function evaluated at z."""
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return sigmoid(matrix) * (1 - sigmoid(matrix))
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