Feature Engineering & Pipelines

Preprocessing mistakes are the most common cause of models that look good in development and fail in production. This course covers the three forms of data leakage, shows you how sklearn Pipelines make correct preprocessing structural, and teaches you to compose ColumnTransformers for mixed-type DataFrames. You will finish with a production-grade pipeline you can serialise, deploy, and audit — including a systematic protocol for reviewing AI-generated preprocessing code.

Lessons are AI-assisted and human-reviewed. Learn more.