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权重对水质模糊综合评价的影响
引用本文:王涛,魏亚妮,钱会.权重对水质模糊综合评价的影响[J].南水北调与水利科技,2010,8(2):87-90.
作者姓名:王涛  魏亚妮  钱会
作者单位:长安大学环境科学与工程学院,西安,710054
基金项目:教育部,国家外国专家局“Ⅲ学科创新引智计划”项目(B08039)
摘    要:权重的计算在水质评价中是一个最为关键的环节,计算权重的方法不同,水质评价结果往往差异很大。现选取了单项评价指标权重法、综合权重法以及熵权法三种不同的权重计算法,分别详述了其计算原理和方法,并在基于这三种权重计算法的基础上采用模糊综合评判法对实例进行分析,最终通过对比得出结论:基于单项评价指标权重法的模糊综合评判法对单个超标因子比较敏感;基于综合权重法和熵权法的模糊综合评判法则综合考虑了各个指标因子对评价结果的影响,能够较全面的反映水质的实际情况,评价结果几乎一致,且相对较好。

关 键 词:水质评价  权重  模糊综合评判法  单项评价指标权重法  综合权重法  熵权法

Influence of Different Weights on Fuzzy Comprehensive Evaluation Method for Water Quality
WANG Tao,WEI Ya-ni,QIAN Hui.Influence of Different Weights on Fuzzy Comprehensive Evaluation Method for Water Quality[J].South-to-North Water Transfers and Water Science & Technology,2010,8(2):87-90.
Authors:WANG Tao  WEI Ya-ni  QIAN Hui
Affiliation:School of Environmental Science and Engineering/a>;Chang'an University/a>;Xi'an 710054/a>;China
Abstract:The calculation of weight is one of the most critical aspects in water quality evaluation. Water quality evaluation results are usually different due to different methods of weight calculation.This article has selected three methods of weight calculation:single item index method of weight; synthesis index method of weight; entropy method of weight.After the expatiation of theories and means,we analyzed example by using the fuzzy comprehensive evaluation method based on these three kinds of methods of weight...
Keywords:water quality evaluation  weight  fuzzy comprehensive evaluation method  single item index method of weight  synthesis index method of weight  entropy method of weight  
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