Table 4.

Comparison of training time between our system and the top performing submission in the NER task

Model type	Team	Time per training iteration (CPU)
Bi-LSTM-CRF	Worcester Polytechnic Institute [37]	480–3600 min
CRF	University of Utah	23 min

Bi bidirectional, CRF conditional random field, LSTM long short-term memory, NER named entity recognition