Short Answer

What distinct purpose does each portion of the split dev set serve?

Question: Answer in one to three sentences, distinguishing the role of the manually examined portion from the role of the hands-off portion.

Sample answer: The manually examined portion supports error analysis, though it will be overfit more rapidly. The hands-off portion can be used to tune parameters and helps show when manual error analysis has caused overfitting to the examined portion.

Key points:

  • Examined portion: manual error analysis.
  • Unexamined portion: parameter tuning.
  • The split helps detect overfitting of the examined portion.

Rubric: The answer should distinguish manual error analysis from hands-off parameter tuning and mention the examined portion's greater overfitting risk or the split's diagnostic value.

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Updated 2026-07-19

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