What Should Improve First Before Validation Results Are Expected to Move?
Question: A model has 18% training error, but the target training error is 6%. What should you improve first before expecting validation or test performance to improve?
Sample answer: You should improve the model's training-set performance first.
Key points:
- Improve training-set performance first.
- Do not expect validation or test results to improve much while training error remains high.
Rubric: The answer must identify training-set performance, or equivalently reducing training error, as the first metric to improve.
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What Should Improve First Before Validation Results Are Expected to Move?