Table 3 Performance (in %) of individual systems on the training material, before and after stop-word removal.
From: Recognition of chemical entities: combining dictionary-based and grammar-based approaches
| Â | Baseline | Baseline + stop-word removal | ||||
|---|---|---|---|---|---|---|
| Â | Precision | Recall | F-score | Precision | Recall | F-score |
Dictionary-based | Â | Â | Â | Â | Â | Â |
   ChEBI | 28.3 | 40.6 | 33.4 | 77.7 | 39.7 | 52.6 |
   ChEMBL | 87.9 | 18.7 | 30.8 | 88.8 | 18.7 | 30.9 |
   ChemSpider | 65.4 | 39.0 | 48.9 | 80.4 | 38.4 | 51.9 |
   DrugBank | 63.0 | 17.2 | 27.0 | 78.1 | 17.1 | 28.1 |
   HMDB | 53.2 | 34.5 | 41.8 | 81.3 | 33.9 | 47.9 |
   NPC | 46.8 | 26.7 | 34.0 | 59.7 | 26.4 | 36.6 |
   TTD | 43.9 | 14.7 | 22.1 | 82.9 | 14.4 | 24.6 |
   PubChem | 17.4 | 59.0 | 26.9 | 61.1 | 57.9 | 59.5 |
   Jochem | 64.2 | 52.5 | 57.8 | 67.1 | 52.5 | 58.9 |
   UMLS | 37.7 | 51.1 | 43.4 | 45.4 | 50.8 | 47.9 |
   ChEBI Family | 10.4 | 16.6 | 12.8 | 29.4 | 16.3 | 21.0 |
Grammar-based | Â | Â | Â | Â | Â | Â |
   Oscar | 25.1 | 63.2 | 35.9 | 28.4 | 62.4 | 39.0 |
   LeadMine | 64.9 | 47.4 | 54.8 | 74.6 | 47.1 | 57.7 |
   ChemAxon | 80.9 | 41.8 | 55.1 | 82.5 | 41.7 | 55.4 |