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Allow stacking pandas dataframes in ColumnTransformer?
See original GitHub issueRight now we make it easy to overwrite _hstack in ColumnTransformer, but I wonder if we should try to be more generic in the first place. I don’t think without something like nep 37 we can do fully generic stacking, but maybe we can already allow stacking pandas dataframes?
I can think of few cases where all the transformers output pandas dataframes but you want to output a numpy array in the ColumnTransformer. This would be a backward incompatible change, so we’d probably need to make it optional (or deprecate the current behavior). Wdyt?
Issue Analytics
- State:
- Created 2 years ago
- Reactions:1
- Comments:5 (5 by maintainers)
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Sorry, perhaps I mis-parsed your language. You’re saying “You’d rarely want a numpy array from transformers outputting dataframes”.
I think stacking frames into frames is good, at least where the indexes are all identical. we could put it into 1.0 without deprecation if we really want.
I think that’s what we are assuming at the moment