This paper provides a comprehensive guide to model validation techniques in machine learning, focusing on methods suitable for biomedical and applied research. It details various approaches, from simple hold-out splits to complex nested group cross-validation, and compares their effectiveness across eight controlled scenarios. The research highlights potential pitfalls like normalization leakage and repeated test-set use, emphasizing that the optimal validation method depends on the specific application and intended deployment target. Reproducible templates in MATLAB and scikit-learn are provided to aid researchers. AI
IMPACT Provides researchers with best practices for ensuring the reliability and generalizability of machine learning models in critical applications.
RANK_REASON Academic paper detailing methodology. [lever_c_demoted from research: ic=1 ai=1.0]
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