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Table 9 Performance of the ensemble system on the test set.

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 71.5 64.8 68.0 73.1 64.6 68.6
+ Missed terms added & extended stop-word list 81.0 72.1 76.3 82.5 71.6 76.7
+ Removal of overlapping terms 84.6 71.7 77.6 85.8 71.2 77.8