Hi @holyeightmonk and welcome to the KNIME forum!
Below you will find a possible solution to predefine which columns should be used to calculate the regression statistics using the -Numeric Scorer- node:
In this simple example, the column names are “petal width” and “Prediction (petal length)” and they are defined using a -Variable Creator- node, as showed in the snapshot above.
Then you will need to configure the -Numeric Scorer- node using the “flow Variables” tab in the -Numeric Scorer- node configuration menu, as follows:
Once you have done that, the configuration menu should show the following highlighted message:
A dummy workflow example is attached below:
20211227 Pikairos How to set the column of numeric scorer automatically.knwf (195.3 KB)
Hope this helps.
Best
Ael