Table 2. Precision and recall results from validation of multiple age classification models.
| Age Group | Tweet Language Use Only | Twitter Handle Metadata Only | Tweet Language Use and Twitter Handle Metadata | WWBP Words | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Precision | Recall | F1 | Precision | Recall | F1 | Precision | Recall | F1 | Precision | Recall | F1 | |
| 13–17 | 69% | 71% | 70% | 59% | 51% | 55% | 71% | 75% | 73% | 62% | 72% | 67% |
| 18–24 | 78% | 74% | 76% | 61% | 78% | 68% | 80% | 73% | 76% | 77% | 65% | 71% |
| 25 or older | 60% | 65% | 65% | 47% | 17% | 25% | 63% | 73% | 67% | 52% | 59% | 55% |
| Overall | 72% | 72% | 72% | 58% | 60% | 57% | 74% | 74% | 74% | 68% | 67% | 67% |
WWBP = World Well Being Project [4].