Build a leakage-safe end-to-end scikit-learn pipeline with preprocessing, modeling, and tuning in one reproducible object.
## CONTEXT Scattering preprocessing across notebook cells before the train/test split is the most common source of data leakage and irreproducible results. The professional pattern is a single scikit-learn Pipeline (often with ColumnTransformer) that bundles imputation, scaling, encoding, and the estimator, so the…
Premium Prompt
Unlock this prompt — and all 25,000+ expert-crafted prompts — with Pro.
Unlock with Pro