Table 1 Performance (F-score) of chunkers and their combination when trained for noun-phrase and verb-phrase recognition on different training sets.
From: Training text chunkers on a silver standard corpus: can silver replace gold?
| Â | Training set for noun phrases | Training set for verb phrases | ||||
|---|---|---|---|---|---|---|
System | GENIA GSC | PennBioIE SSC | PennBioIE GSC | GENIA GSC | PennBioIE SSC | PennBioIE GSC |
Lingpipe | 75.8% | 78.5% | 78.7% | 90.6% | 91.6% | 91.9% |
OpenNLP | 80.8% | 83.9% | 84.7% | 90.7% | 93.2% | 94.8% |
Yamcha | 80.1% | 83.2% | 84.0% | 89.5% | 92.8% | 94.2% |
Combined | 84.3% | 84.5% | 87.2% | 93.7% | 93.9% | 95.5% |