The Indefinite Model Evaluation for Groundwater Quality

In this paper, the author make the grey forecast united with the fuzzy synthetic assessment to determine the regional classification problems for regulating and planning groundwater. In this case, the following models are adopted to forecast the water quality system: GM(1, 1) model groups, GM(1, 1) residual difference model, GM(1, N), GM(1, 1) Weighted model.