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Cross-Validation Theory
Cross-Validation Theory
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Foundation
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Question 1 of 4
120s
foundation (2/10)
conceptual
What is k-fold cross-validation used for?
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A.
Training k separate independent models on different data subsets and combining their predictions into an ensemble
B.
Selecting the best features by testing them one at a time
C.
Estimating generalization performance by repeatedly splitting data into train and validation folds
D.
Increasing the amount of training data by duplicating samples
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