Add regularization to backpropagation

Merouane Atig · Merouane Atig · commit a5918b9f1f9a · 2011-11-14T00:33:49.000+01:00
diff --git a/mlclass-ex4/nnCostFunction.m b/mlclass-ex4/nnCostFunction.m
@@ -97,6 +97,8 @@
 Theta2_grad = Theta2_grad / m;
 
 
+Theta1_grad(:, 2:end) = Theta1_grad(:, 2:end) + lambda / m * Theta1(:, 2:end);
+Theta2_grad(:, 2:end) = Theta2_grad(:, 2:end) + lambda / m * Theta2(:, 2:end);
 
 
 

Original file line number	Diff line number	Diff line change
`@@ -97,6 +97,8 @@`
`97`	`97`	`Theta2_grad = Theta2_grad / m;`
`98`	`98`
`99`	`99`
	`100`	`+Theta1_grad(:, 2:end) = Theta1_grad(:, 2:end) + lambda / m * Theta1(:, 2:end);`
	`101`	`+Theta2_grad(:, 2:end) = Theta2_grad(:, 2:end) + lambda / m * Theta2(:, 2:end);`
`100`	`102`
`101`	`103`
`102`	`104`