Application of fuzzy matter-element model for water quality evaluation

Based on fuzzy matter-element analysis and combined with concept of euclid approach degree, fuzzy matter-element model was established to evaluate quality of the water. The quality of water evaluation was achieved through calculating euclid approach degree between the compound fuzzy matter element to the standard (the best) fuzzy matter-element. Adopting method entropy to weights, whereby avoiding the subjectivity determined by the weight, The model was applied to evaluate water quality of Yuzhou municipality, the results show applying the model to evaluate water quality is reasonable and feasible ,the approach is simply and convenient to operate, and provided a new effective method for the comprehension evaluation of water quality.