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Relevance 7/10Operations and WorkflowIntermediate6 min read
Schema Migration
Schema migration transitions labeling data from one taxonomy version to another.
Why it matters for annotators
Poor migrations create inconsistencies and broken historical comparisons.
Visual mental model
Old schema labels -> migration rules -> new schema labels.
Examples (bad vs good)
Scenario: Real annotation scenario involving Schema Migration
Bad: Labeling quickly without applying project rubric.
Good: Applying rubric criteria, documenting rationale, and escalating uncertainty.
Common mistakes
- Skipping guideline details for edge cases.
- Applying inconsistent criteria across similar samples.
- Avoiding escalation even when uncertain.
Submission checklist
- Read the latest guideline update before each batch.
- Apply rubric dimensions explicitly in each decision.
- Escalate ambiguous items with concise rationale.