Why Add the Target Line to a Learning Curve?
Question: Answer in one to three sentences: Why is a desired performance threshold drawn on a dev-error learning curve before extending the curve?
Sample answer: The target line gives a clear benchmark for judging the projection. By comparing the extended curve with that benchmark, you can tell whether collecting more training data is likely to move the model close enough to the goal.
Key points:
- The target provides a benchmark.
- The projected curve can be compared with that benchmark.
- This helps estimate whether extra data may be worthwhile.
Rubric: The answer should identify the target as a comparison line and connect it to deciding whether additional data could realistically reach the desired level.
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Related
What does sketching an extension of the dev-error curve help you estimate?
A trend line from past data can give an exact guarantee of the model’s future error after more training data is added.
Add the target _____ to a dev-error curve before estimating the value of more data.
Match each learning-curve element with its role when estimating the benefit of more labeled data.
Order the reasoning steps for judging whether more data is likely to reach a target performance level.
Using a Validation Curve to Judge the Value of More Data
If the validation curve reaches the target after the data set doubles, what should be concluded?
Why Add the Target Line to a Learning Curve?
Which conclusion best matches the example learning curve?
A rough learning-curve estimate can support a tentative prediction about the value of adding more training data, but it does not guarantee the outcome.