Core idea about dev and test data
The data you ultimately need to perform well on is _____ from the development and test sets.
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When the Development Set No Longer Matches Real User Data
If a dev/test set does not reflect the distribution the model will face after deployment, what should the team do?
True or False: A validation set drawn from a very different population than deployment data can still reliably show which model changes will help in the real world.
When the validation set does not match deployment conditions, the recommended action is to _____ the validation set.
Identify the distribution concepts used in model evaluation.
Arrange the actions a team should take when a validation set stops predicting real-world performance.
Why a Non-Representative Dev/Test Set Can Mislead Model Improvement
True or False: Evaluation data should match the conditions the final system will face in practice.
Core idea about dev and test data
Match each situation to the best action for dev/test data.
Order the reasoning steps showing why a development set that misses the real distribution should be revised.
Why mismatched evaluation data can mislead a project
Diagnose a field-to-test mismatch in apple inspection photos
What should a team do if its evaluation data no longer reflects real-world use?