Machine Learning Course Notes (CS229), Andrew Ng, 2022 (Stanford University) - Offers a rigorous academic introduction to machine learning, covering the definition and role of models, and the difference from learning algorithms.
User Guide: Glossary, Scikit-learn developers, 2024 (Scikit-learn project) - Defines core terms like 'estimator' (their term for algorithm), 'model,' and 'transformer,' providing a practical context for these concepts.