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Cross-Validation & Overfitting

Know whether your model will actually work on new data

0% · 0 of 4 steps completed · ~90 min · Diagnose overfitting and validate with cross-validation
1
Overfitting Demo
Watch train vs validation accuracy diverge as depth grows
2
Bias-Variance Tradeoff
Underfit, good fit, overfit -- three regimes visualised
3
K-Fold Cross-Validation
Reliable performance estimates with cross_val_score
4
Validation Curve
Automated parameter sweep with validation_curve()