Table 3.

Result of models to identify long entities

Models	P	R	F1
LSTM-CRF	82.5	73.4	72.3
GRU-CRF	80.4	72.3	75.7
BERT-CRF	85.4	76.7	76.2
BERT-LSTM-CRF	82.3	83.9	82.6
BERT-GRU-CRF	83.1	84.3	84.2
BERT-FLAT—CRF	85.6	86.2	85.2
BERT-Soft Lattice structure Transformer—CRF	90.5	91.4	91.6