Train/Test/Validation Splits — Roadmap Step & Resources
Why data must be split before training, and what each split is for
- Level: advanced
- Estimated time: 1 days
- Roadmap: Machine Learning
Interview questions
- Why do you need a separate validation set in addition to a test set?
Study resources
- train_test_split (Article) — The official scikit-learn documentation for train_test_split.
- Train Test Validation Split Explained (Video) — A practical explanation of why models need separate train, validation and test sets.
Part of
- Model Evaluation & Validation — section
- Machine Learning roadmap — the full learning path