calculate "max_num_of_trees_in_the_forest"

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jossyy
66 ●1 ●3 ●9

berak
32993 ●7 ●81 ●312

Hello, I am using random forest in my code. And I am not sure that how I should calculate "max_num_of_trees_in_the_forest " that is a parameter of CvRTParams() function.

I know the machine shouldnt memorize all of my train datas .

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answered Jan 22 '14

Nghia

1000 ●5 ●16

It's much easier to overfit the data with a larger max_depth than with max_num_of_trees_in_the_forest. In fact, from my experience with random forest it is safe to use a large number of trees eg. in the 30,40,50s. I would plot a graph of "accuracy vs number of trees". You should get a graph that asymptotes off for high number of trees. This should give you an idea of what number to pick.