Radial Basis Function Neural Network Based on an Improved Exponential Decreasing Inertia Weight-Particle Swarm Optimization Algorithm for AQI Prediction

Table 3

The values of MSE, RMSE, and MAPE (%) of trained ouput by four models for the daily air quality index (AQI) of Xi’an.

Error	LDIW-PSO	NDIW-PSO	GLbestIW-PSO	EDIW-PSO
MSE (*𝑒^2)	3.6565	2.6560	3.5800	2.5389
RMSE	0.2239	0.1846	0.1935	0.1350
MAPE (%)	3.2143	2.9898	3.1684	2.8644