Embeddings of Label Components for Sequence Labeling:A Case Study of Fine-grained Named Entity Recognition
Table 5: Comparison between the baseline and proposed models for the labels at each hierarchical layer.
['[EMPTY]', 'Top', 'Second', 'Third']
The proposed model with summation (Proposed:Sum) outperformed the other models in all the hierarchical categories. For the labels at the top layer, in particular, Proposed:Sum achieved an improvement of the F1 scores by a large margin on the Japanese dataset.