Short Answer

Why is it helpful to inspect a small batch of validation errors?

Question: Answer in one to three sentences: What benefit comes from manually reviewing about 25 mistakes made by a classifier on validation examples?

Sample answer: That review begins to reveal the main patterns behind the model's failures. It gives a quick, rough picture of the most important error sources rather than a complete diagnosis.

Key points:

  • Rough picture
  • Main failure patterns
  • About 25 reviewed mistakes

Rubric: The answer must state that reviewing about 25 mistakes begins to provide a rough sense of the main error sources.

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Updated 2026-08-12

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