A Study of Fuzzy Synthetic Evaluation for Water Quality Assessment Based on Rough Set Theory
An Yan
Zou Zhi-hong
Wang Xiao-jing
Abstract：Due to the subjectivity of selecting indexes and the difficulty of calculating parameter weights , rough set is introduced to perform attribute reduction to eliminate irrelevant and unimportant parameters . Attribute importance degree in rough set is applied to determine the weights of the parameters after attribute reduction.Then, a fuzzy synthetic evaluation is used to assess water quality .It is found that the results by this method are almost the same as those by traditional fuzzy synthetic evaluation .In addition, rough set attribute reduction and determining weights by attribute importance degree can reduce input space dimen -sions and simplify the process of water quality assessment .
Keywords：rough setattribute reductionfuzzy synthetic evaluationwater quality assessment
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 1-5 )