FAQ
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Data Labeling
How Do You Ensure Data Labeling Accuracy?
Accuracy comes from layering multiple checks into the annotation process rather than relying on any single safeguard.
Core Accuracy Methods
- Double-pass annotation, where two specialists label the same data point independently and a senior Subject Matter Expert resolves any discrepancies
- QA audits, where a dedicated team reviews a percentage of completed work and assigns individual and team-wide quality scores
- Ongoing feedback, using those scores to guide daily coaching and targeted retraining
- A high ratio of managers and auditors to annotators, so quality doesn't slip as volume increases
Clients typically receive periodic reports with detailed accuracy metrics, giving full visibility into how the data was labeled. This kind of layered QA is central to how BUNCH runs annotation projects at any scale.
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