Recipe 02 — Diagnose Low mAP

1. Run eval_run on the checkpoint you suspect regressed.
2. Use eval_per_class to identify whether the drop is broad or concentrated.
3. Run eval_error_analysis to inspect likely causes such as small-object misses or class confusion.
4. Compare the run against a known-good baseline with eval_compare or run_compare.

This is the “why did performance fall?” recipe that turns raw metrics into next actions.