Forecasting of Wastewater Discharge and the Energy Consumption in China Based on Grey Model

Table 3

Deviation indexes of forecasting results for different forecasting methods.

Method	MAPE(%)	MAE	MSE
FGM(1,1) model	11.05	7.928	113.49
OFGM(1, 1) model	10.58	6.8850	84.2164