Two Novel Grey System Models and Their Applications on Landslide Forecasting

Table 4

The result of landslide forecasting in BaZiMen area.

YYYYMM	Actual value	GM()	Actual value + 100	GM()	GGM()
2004.04	140.7	140.7	240.7	240.7	240.7
2004.05	144.4	152.72	244.4	249.79	252.72
2004.06	177.8	180.43	277.8	280.41	280.43
2004.07	218.5	213.17	318.5	314.78	313.17
2004.08	270.4	251.85	370.4	353.36	351.85
2004.09	285.2	297.54	385.2	396.68	397.54
MAPE	—	0.69	—	0.40	0.46
2004.10	300.0	351.53	400.0	445.30	451.53