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Compute Cost (for one variable)

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neingeist 2014-10-01 22:05:13 +02:00
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ex1/computeCost.m
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@ -13,9 +13,11 @@ J = 0;
% Instructions: Compute the cost of a particular choice of theta % Instructions: Compute the cost of a particular choice of theta
% You should set J to the cost. % You should set J to the cost.
predictions = X * theta;
errors = predictions - y;
squared_errors = errors .^ 2;
J = 1/(2*m) * sum(squared_errors);
% ========================================================================= % =========================================================================