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Ablation test for additional features of hybrid system. Statistically significant performance decrease over using all features is marked with *.
| Precision | Recall | F1-measure | ΔF | |
|---|---|---|---|---|
| All | 93.22 | 87.16 | 90.09 | |
| - open domain word embeddings | 93.51 | 86.23 | 89.72* | −0.37 |
| - attribute name | 92.98 | 86.89 | 89.83* | −0.26 |
| - token shape n-gram | 93.05 | 86.65 | 89.73* | −0.36 |
