Error analysis: turning failures into a roadmap
Look at your failures systematically: sample, label with a taxonomy, count, and prioritise. Covers building a failure taxonomy, open coding then axial grouping, measuring annotator agreement with Cohen's kappa (runnable), and converting categories into targeted fixes and new tests.
15 min·Verified 2026-11Pro+50 XP
Aggregate scores tell you how much is wrong. Error analysis tells you what is wrong, which is what you can act on.
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