Compute Cost (for one variable)

10 years ago · 14c85aa85c
parent bc0eb3519f
commit 14c85aa85c
1 changed files with 5 additions and 3 deletions
--- a/ex1/computeCost.m
+++ b/ex1/computeCost.m
@ -13,9 +13,11 @@ J = 0;
 % Instructions: Compute the cost of a particular choice of theta
 %               You should set J to the cost.

+predictions = X * theta;
+errors = predictions - y;
+squared_errors = errors .^ 2;

-
-
+J = 1/(2*m) * sum(squared_errors);

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