Caretegorical encoding preprocessing produces redunant features
- 
Caretegorical encoding preprocessing produces a lot of extra features (~10k) The example is in encoding_bug branch, oil.py
 - 
pre_proc_encoders is lost after export-import of pipelines
 
Caretegorical encoding preprocessing produces a lot of extra features (~10k) The example is in encoding_bug branch, oil.py
pre_proc_encoders is lost after export-import of pipelines