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Compute the cost function for logistic regression

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neingeist 2014-10-14 07:40:42 +02:00
parent b863a3863e
commit 8c100a3f49
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ex2/costFunction.m
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@ -19,7 +19,7 @@ grad = zeros(size(theta));
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% Note: grad should have the same dimensions as theta
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J = 1/m * (-y'*log(sigmoid(X*theta)) - (1-y)'*log(1-sigmoid(X*theta)));