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sunilkumardash9/cost_function.py

Created January 30, 2022 12:05
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cost_function.py
def cost_func(self,theta):
z = dot(X,theta)
cost0 = y.T.dot(log(self.sigmoid(z)))
cost1 = (1-y).T.dot(log(1-self.sigmoid(z)))
cost = -(sum(cost1 + cost0))/len(y)
return cos
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