Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) based on Ameliorated Entropy Weight on the Evaluation of Groundwater Quality

Technique for Order Preference by Similarity to Ideal Solution(TOPSIS) based on ameliorated entropy weight was established in order to evaluate the groundwater quality in some years objectively and accurately.In this method,entropy weight that originated from original data was put forward,which was ameliorated by the experts' factor,and an evaluation method of technique for order preference by similarity to ideal solution is constructed.A case study of the comprehensive evaluation of groundwater quality from 2005 to 2009 in C city,the change tendency of groundwater quality was attained.The process and result indicate that this method is easy in calculation,and the outcome is reasonable,and this method is worth popularizing and applying in groundwater quality evaluation.