Predictions: include error in 'Predictions' output

[wvdvegte]

What's your use case?
When applying the Predictions widget, I'd like to visualize the prediction error for each record, for instance in a scatter plot or violin plot.

What's your proposed solution?
Prediction already calculates the error (in the case of regression, various flavors of it) and shows it in its dialog box. Should be no problem to also include it in the 'Predictions' output. Perhaps even all of the available error types in separate columns.
For classification, it may also be useful to have the probabilities per class in the output.

Are there any alternative solutions?
Yes, create an extra variable "error" using Formula (formerly Feature Constructor). But it's in fact redoing a simple calculation that was already made.