topic Decision Tree Induction in Discussions

Decision Tree Induction

PhDer — Fri, 09 Jun 2023 00:46:06 GMT

JMP V.15.02Pro

Hello,

I have used a Decision Tree Induction analysis, and I have a quick question. I understand that the Log Worth is related to the predictability of the analysis, but what does the 'Difference' value represent?

Thanks in advance,

PhDer

Re: Decision Tree Induction

Georg — Sat, 26 Feb 2022 11:41:59 GMT

Could not find the term "Difference",

what about using the Help Tool (Question Mark ? in the Toolbar) and pointing to that report/term?

This should lead you to the help:

The Partition Report (jmp.com)

Re: Decision Tree Induction

PhDer — Sat, 26 Feb 2022 12:44:43 GMT

Hi Georg,

Thanks for replying, I also can't find anything on "Difference".

Re: Decision Tree Induction

dale_lehman — Sat, 26 Feb 2022 13:50:31 GMT

With a continuous response variable, the Difference appears to be the difference between the 2 means for the next split in the tree. I don't know why that calculation is placed in the point in the tree above where the split is done, but if you look at the splits, you will see that each split shows the mean for each branch and the difference between these means appears with the point of the tree just above that split.

Re: Decision Tree Induction

PhDer — Sat, 26 Feb 2022 13:56:56 GMT

dale_leham,

Thanks very much for your help!