Table 4.
Evaluation results of AutoSentenceParser and the Snowball model.
| Parser | Total extracted | Removed | TP | Precision | Recall | F-score | |
|---|---|---|---|---|---|---|---|
| AutoSentenceParser | N/A | 212 | 53 | 115 | 72.3% | 55.0% | 62.5% |
| Snowball | 95% | 12 | 0 | 12 | 100.0% | 5.7% | 10.9% |
| Snowball | 90% | 25 | 0 | 25 | 100.0% | 12.0% | 21.4% |
| Snowball | 85% | 39 | 0 | 39 | 100.0% | 18.7% | 31.5% |
| Snowball | 80% | 67 | 5 | 59 | 95.2% | 28.2% | 43.5% |
| Snowball | 75% | 101 | 6 | 89 | 93.7% | 42.6% | 58.6% |
| Snowball | 70% | 123 | 12 | 102 | 91.9% | 48.8% | 63.8% |
| Snowball | 65% | 141 | 20 | 107 | 88.4% | 51.2% | 64.8% |
| Snowball | 60% | 157 | 27 | 106 | 81.5% | 50.7% | 62.5% |
| Snowball | 55% | 169 | 34 | 107 | 79.3% | 51.2% | 62.2% |
| Snowball | dynamic | 147 | 21 | 113 | 89.7% | 54.1% | 67.5% |
The fourth column “Removed” is the number of records that is deleted during post processing.