Short-Term Air Quality Prediction Based on Fractional Grey Linear Regression and Support Vector Machine

Table 9

The results of the hybrid model for PM₁₀.

	Actual value (unit: μg/m^3)	Predictive value (unit: μg/m^3)	APE (%)
12–20	130	123	5.4
12–21	78	85	9.0
12–22	90	69	23.3
12–23	79	69	12.7
12–24	56	56	0
12–25	60	55	8.3
12–26	56	49	12.5
12–27	52	63	21.2
12–28	34	62	82.4
12–29	25	40	60.0
12–30	49	42	14.3
MAPE			22.6
12–31	57	57	0
01–01	77	81	5.2
01–02	85	87	2.4
01–03	85	85	0
MAPE			1.9