analiza aiqbench

This cheat sheet emphasizes the critical importance of encapsulating feature engineering steps within Scikit-Learn Pipelines to prevent data leakage during cross-validation. By treating preprocessing strategies as tunable hyperparameters within a unified estimator, practitioners can ensure models are evaluated on unseen data without prior exposure to validation folds. The guide highlights essential structural tools like ColumnTransformer and SimpleImputer that streamline the workflow for handling mixed data types and missing values.