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Artificial Intelligence & Machine Learning
Q13 / 100
What is cross-validation?
Correct! Well done.
Incorrect.
The correct answer is B) A technique evaluating model performance by splitting data into k folds, training on k-1 and testing on the held-out fold, averaging across all k runs
B
Correct Answer
A technique evaluating model performance by splitting data into k folds, training on k-1 and testing on the held-out fold, averaging across all k runs
Explanation
k-fold CV gives a more reliable estimate of generalization performance. Stratified k-fold preserves class distribution. Leave-one-out (LOO) uses each sample as the test set once.
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13/100