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

Table 5

The results of SVM for PM₁₀.

	Actual value (unit: μg/m^3)	Predictive value (unit: μg/m^3)	APE (%)
12–20	215	206	4.2
12–21	153	162	5.9
12–22	228	219	3.9
12–23	132	123	6.8
12–24	193	202	4.7
12–25	248	215	13.3
12–26	114	123	7.9
12–27	78	85	9
12–28	68	116	70.6
12–29	79	88	11.4
12–30	122	113	7.4
MAPE			13.2
12–31	200	206	3
01–01	198	184	7.1
01–02	273	161	41
01–03	299	134	55.2
MAPE			26.6