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Table 7 Performance of the ensemble system on the training material.

From: Recognition of chemical entities: combining dictionary-based and grammar-based approaches

  CDI task CEM task
Ensemble system Precision Recall F-score Precision Recall F-score
ChEBI, HMDB, LeadMine, and RegEx 70.1 63.7 66.7 70.9 62.8 66.6
+ Missed terms added to dictionary 73.4 91.0 81.3 73.8 89.4 80.9
+ False-positive terms added to stop-word list 87.6 89.4 88.5 86.4 87.6 87.0
+ Removal of overlapping terms 91.8 89.1 90.9 91.8 87.4 89.5