What is the purpose of the ColumnTransformer in scikit-learn and how does it work?

Data Science with Python Hard

Data Science with Python — Hard

What is the purpose of the ColumnTransformer in scikit-learn and how does it work?

Key points

  • ColumnTransformer enables multiple transformations on different subsets of columns
  • It concatenates the transformed columns into a single feature matrix
  • Useful for streamlining preprocessing steps in a scikit-learn Pipeline

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