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Evaluation of SNoW and Stat De-id on the people, locations, and organizations found in the out-of-vocabulary corpus. Highest F-measures are in bold. The F-measure differences from Stat De-id in PHI and in non-PHI are significant at α = 0.05.
| Method | Class | Precision | Recall | F-measure |
|---|---|---|---|---|
| Stat De-id | PHI | 98.04% | 96.49% | 97.26% |
| SNoW | PHI | 96.50% | 95.08% | 95.78%* |
| Stat De-id | Non-PHI | 99.67% | 99.82% | 99.74% |
| SNoW | Non-PHI | 99.53% | 99.67% | 99.60%* |
