Use of 'boosting' in CHAID causes error
Using a CHAID model on a flag target, enabling boosting to enhance model accuracy (while all other parameters are set to their defaults) results in the following execution error: "Warning: Error: Field $R1-Target has an incorrect storage type in the data model."
Model runs fine without boosting and $R1-Target seems like an internally calculated field ... so I don't understand what's going on.
I raised an issue with Technical Support. Turns out it is a bug when CHAID is used from auto-classifier. There is an interim fix.
I'm running Modeler 17 with Fix Pack 1 (i.e. 17.0.0.1) and the link I was sent for applying IF020 is
For anyone that thinks they are hitting this issue, log a ticket with technical support. We can help you verify you are experiencing the defect, then give you access to the fix Mauricio noted above.
This does not look like an error or warning that I have seen before and I think that you are correct in your suspicion that the $R1-Targetis an internally calculated field; probably related to the first of the component models estimated as a part of the boosting.
I would suggest that you contact our Technical Support to open a PMR for them to investigate this error.