Prediction of Air Quality Based on Hybrid Grey Double Exponential Smoothing Model

Table 3

The forecasting results of PM_2.5 concentration.

Date	CFES	AAES	Hybrid model	ES
Parameter
1-Dec	32	32	32	32
2-Dec	46.00	45.99	45.99	43.20
3-Dec	68.96	54.58	61.03	54.88
4-Dec	85.78	70.00	77.07	71.10
5-Dec	77.01	64.78	70.27	70.37
6-Dec	62.26	55.27	58.40	63.16
7-Dec	56.00	53.64	54.70	60.06
8-Dec	77.06	77.93	77.54	70.50
9-Dec	100.27	102.52	101.51	98.57
10-Dec	102.71	105.38	104.18	104.47
MAPE	9.83%	2.69%	5.81%	5.60%
11-Dec	93.85	109.91	102.71	112.01
12-Dec	97.84	115.27	107.45	119.56
13-Dec	101.66	121.03	112.34	127.10
MAPE	9.18%	7.16%	0.97%	10.98%