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Train/test split
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635.
Purpose of Test Set
easy
What is the primary purpose of holding out a test set during model development?
A
To detect data leakage by comparing training and test error at each stage of development
B
To ensure the model is not exposed to duplicate samples that appear in both splits
C
To tune hyperparameters by comparing model performance across different configurations during the model selection process
D
To provide an unbiased estimate of model performance on unseen data after all training decisions are made
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