Gradient boosting tune -to improve misclassification rate

[M23]

Hi,

I am building GB in SAS eminer with event rate of 3.7% ,after tunning for many iteration  model miscllasification rate remain constant no change in the rate,any options/ method to tune and reduce the rate.

Thank you 

[WendyCzika]

You can try using a smaller value for the Leaf Fraction property to possibly improve your model.  And if you have more than 20K observations in your training data, you can also try increasing the Node Sample property.

[M23]

Thank you Wendy.