Regularized linear regression cost function

10 years ago · 6530916642
parent d93d111106
commit 6530916642
1 changed files with 7 additions and 15 deletions
--- a/ex5/linearRegCostFunction.m
+++ b/ex5/linearRegCostFunction.m
@ -19,16 +19,8 @@ grad = zeros(size(theta));
 %               You should set J to the cost and grad to the gradient.
 %

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+J =   1/(2*m) * sum(((X*theta)-y).^2) ...
+    + lambda/(2*m) * sum(theta(2:end).^2);

 % =========================================================================