Cross-Validation

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• Automated Machine Learning (AML) - AutoML
• Principal Component Analysis (PCA)
• Feature Exploration/Learning
• Recursive Feature Elimination (RFE)
• Recursive Feature Elimination (RFE) for Feature Selection in Python | Jason Brownlee - Machine Learning Mastery
• Notes on Feature Preprocessing: The What, the Why, and the How | Matthew Mayo - KDnuggets

a technique for evaluating ML models by training several ML models on subsets of the available input data and evaluating them on the complementary subset of the data. Use cross-validation to detect overfitting, ie, failing to generalize a pattern Developer Guide - Amazon AWS ML