TBR-NER: Research on COVID-19 Text Information Extraction Based on Joint Learning of Topic Recognition and Named Entity Recognition

Table 4

Comparison of TBR-NER under transfer learning and TBR-NER without transfer learning.

	Topic recognition of the TBR-NER model under transfer learning	Entity recognition of the TBR-NER model under transfer learning	Topic recognition of the TBR-NER model without transfer learning	Entity recognition of the TBR-NER model without transfer learning
Accuracy rate	0.9791	0.9585	0.9709	0.9160
Loss value	3.8656	5866.963	6.0467	11850.74