决策树- One Branch to rule them all

Ben_Suen

Hey guys,

I've been working on a decision tree for a few days now, while we are still figuring out how to best generate it one pattern we are seeing is that almost every time one 'branch' leading to a particular leaf ends up completely dominating the tree resulting in almost 99% of the values being able to be predicted by that branch.

Is this normal? Should I be correcting/changing the data in some way to counter act this?

We have tried the Auto Model function as well and are running into the same issue.

MartinLiebig

Hi,

well.. this sometimes happens. I would'nt worry to much if the prediction accuracy is good.

What you can do is change the criterion. I know that these kind of balanced trees happen if you use accuracy as a criterion.

Best,

Martin