In view of the uncertainty of indexes for evaluating water quality the entropy value theory is applied to combine with fuzzy matter-element method to establish an entropy fuzzy matter-element model.
鉴于水质评价中各指标的不确定性和模糊性，将熵值理论与模糊物元建模相结合，应用于水质综合评价中，建立了基于熵权的模糊物元模型。
The analysis and real example show that the modified rough entropy method for measuring uncertainty in rough sets is more reasonable and more accurate than the classical methods.
通过分析和实例可以看出，所提出的修正粗糙熵方法可以用来更合理、更精确地测量粗糙集中的不确定性。
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