Table 3. Prediction accuracy of each combined model.

Model		Evaluation
	MAPE	RMSE	R2
Attention-BiLSTM	4.20%	65,760.45	0.90
PSO-Attention-BiLSTM	2.53%	41,293.93	0.95
APSO-Attention-BiLSTM	0.90%	13,563.87	0.99