A fuzzy method for groundwater quality evaluation introduced with weight of sample difference

The typical traditional fuzzy method is of some defects,because of the determinate weight only representing the relationship between indicator value and groundwater quality standard,which can not display the difference between indicator values of samples in one region. It is likely to result in a lower grade for the groundwater quality if one indicator of a sample possesses a high amount. In this study,different generalized weighted distances on the full consideration of the advantages of tradit...