juniorScikit-Learn
What is a pipeline in Scikit-Learn?
Updated May 17, 2026
Short answer
Pipeline chains preprocessing and model steps into one workflow.
Deep explanation
It ensures consistent transformations and prevents data leakage by encapsulating steps.
Real-world example
Used in production ML systems to ensure repeatable workflows.
Common mistakes
- Applying preprocessing outside pipeline causing leakage.
Follow-up questions
- Why use pipelines?
- Can pipelines include feature selection?