TABLE 8.

Comparison of model performance evaluation indicators on different set (%).

Set	Model	Precision	Recall	F1 score
Validation Set	BiLSTM-CRF	88.54	91.25	89.87
	BERT-BiLSTM-CRF	89.05	92.30	90.64
	ALBERT-BiLSTM-CRF	91.47	92.83	92.14
Test Set	BiLSTM-CRF	88.20	91.23	89.69
	BERT-BiLSTM-CRF	88.02	91.70	89.82
	ALBERT-BiLSTM-CRF	89.88	92.55	91.19