Two Novel Grey System Models and Their Applications on Landslide Forecasting

Table 1

Simulation by GM() and GGM().

Time	Actual value	GM()	Actual value + 100	GM()	GGM()
1	6	6	106	106	106
2	4	4.50	104	104.15	104.50
3	7	5.03	107	104.93	105.03
4	5	5.62	105	105.72	105.62
5	6	6.28	106	106.51	106.28
6	4	7.02	104	107.31	107.02
7	10	7.85	110	108.12	107.85
8	9	8.77	109	108.93	108.77
9	11	9.80	111	109.75	109.80
10	10	10.96	110	110.57	110.96
MAPE (%)		1.36		0.098	0.10