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malaikannan/Sigmoid_Activiation Function

Created September 6, 2016 21:43
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Sigmoid_Activiation Function
import numpy as np
#sigmoid activation function
# This can be replaced by other activation function like RELU, Tanh etc.
def sigmoid(x,derivative=False):
if(derivative==True):
return x*(1-x)
return 1/(1+np.exp(-x))
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