Briefly describe what to do when a system is not doing well on the training set.
Question: In one to three sentences, describe the recommended action when a system is not performing well on the training set.
Sample answer: Listen to about 100 examples the algorithm is doing poorly on to understand the major categories of training set errors, and count the errors in different categories.
Key points:
- Review about 100 poorly-performing examples
- Count errors by category
Rubric: Full credit for mentioning the ~100 example review and categorizing/counting errors.
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