Table 5. Evaluation of IPSO-LSTM model prediction results, comparing target stock independent prediction with matching stock prediction.

Stocks	Prediction type	MAPE	RMSE	MAE	R 2
Hengrui-Huana	independent	0.0059	0.2584	0.2388	0.9705
	matching	0.0034	0.1799	0.1332	0.9857
Fuxing-Hengrui	independent	0.0086	0.3729	0.3072	0.9630
	matching	0.0050	0.2131	0.1808	0.9879
Fuxing-Huana	independent	0.0086	0.3729	0.3072	0.9630
	matching	0.0040	0.2036	0.1466	0.9890
Renfu-Chengdu	independent	0.0054	0.1363	0.1182	0.9897
	matching	0.0036	0.1020	0.0757	0.9942
Huahai-Renfu	independent	0.0043	0.1292	0.0893	0.9782
	matching	0.0037	0.0955	0.0754	0.9881

Notes.

Mean absolute percentage error, MAPE; root mean square error, RMSE; mean absolute error, MAE; coefficient of determination, R².