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Short Answer

What are the main roles of a development set?

Question: What three kinds of decisions can a development set help you make when building a learning system?

Sample answer: A development set helps you adjust hyperparameters, choose among input features, and make other design choices for the model.

Key points:

  • Adjust hyperparameters.
  • Choose input features.
  • Make other design choices for the learning system.

Rubric: The response must correctly name all three roles of the development set.

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Updated 2026-08-12

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