AutoML: basic support for blending, expose blending_frame param to AutoML

Description

Suggestion for basic support:

  • expose blending_frame param.

  • if blending enabled, we don't need to force keep_cross_validation_predictions to true when training base models.

  • leave CV default as is?

  • train the 2 SEs in blending mode instead of cv-stacking mode.

Alternative is to just expose a blending params:

  • automatically split the training_frame to generate a blending_frame (75/25).

  • disable CV (set nfolds to 0) for base models.

  • disable all keep_cross_validation_* params.

  • train the 2 SEs with generated blending frame.

Assignee

Sebastien Poirier

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Reporter

Sebastien Poirier

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