Air Pollutant Concentration Forecasting Using Long Short-Term Memory Based on Wavelet Transform and Information Gain: A Case Study of Beijing

Table 3

The results of feature selection.

	PM10	PM2.5	NO2	SO2	O3	CO
1	NO2	SO2	PM2.5	PM2.5	PM10	PM2.5
2	SO2	PM10	PM10	NO2	PM2.5	PM10
3	CO	CO	SO2	CO	CO	O3