Table 4. Comparison results.

Model	Mi-F1 score	Times
DocBERT	89.40	4 h
LSTM	86.06	2.5 h
VDCNN	90.21	3.8 h
HTTN	92.10	2.3 h
LEAM	91.75	2 h
LSAN	90.00	2 h
CNLE	93.47	1.8 h
Proposed model	94.18	1.7h