Support offsets in the Stacked Ensemble metalearner

Description

We don't support using offsets (offset_column) in Stacked Ensemble. You can use offsets in the base learners, but Stacked Ensemble metalearner is hardcoded and doesn't honor that. We need to check:

  • If one of the models used offset_column, that they all use it

  • If it was used, it must be included in the `training_frame` for Stacked Ensemble and then we should use it automatically.

  • This column must be copied from the training frame and added to the level-one (metalearning) frame so it’s available for the metalearner to use.

Assignee

Sebastien Poirier

Fix versions

Reporter

Erin LeDell

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Major
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