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Data Science Academy · Lesson

ColumnTransformer for Mixed Types

Different prep per column group.

Columns Are Not Equal

Real tables mix numbers and categories, and each kind needs different prep. One scaler for everything simply will not work. 🧩

Meet ColumnTransformer

A ColumnTransformer applies different transformers to different column groups, all in one step you can drop inside a pipeline.

All lessons in this course

  1. Why Pipelines Beat Manual Steps
  2. ColumnTransformer for Mixed Types
  3. Tune With GridSearchCV
  4. Save and Reload a Trained Pipeline
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