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时间:2020-03-12
《多目标综合评价中四种确定权重方法的比较与分析.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第38卷第2期湖北大学学报(自然科学版)Vol.38No.22016年3月JournalofHubeiUniversity(NaturalScience)Mar.,2016文章编号:1000-2375(2016)01-0172-07多目标综合评价中四种确定权重方法的比较与分析何超,李萌,李婷婷,彭雪,李婕,赵锦慧(湖北大学资源环境学院,湖北武汉430062)摘要:在多目标综合评价中将指标权重的专家打分法、主成分分析法、层次分析法和模糊综合评价法进行比较研究.以某市10个饮用水源地为研究对象,选取单位GDP用水量、单位水面面积COD负荷、单位水面面积TP负荷等12个评价指
2、标进行综合评价.结果表明:在多目标综合评价中,用专家打分法确定指标权重,其优点是方法操作简便,缺点是精确性比较低;用主成分分析法可避免主观随意性,能显著表现评价指标的差异性,但是计算过程比较复杂且要求基础数据精确;用层次分析法能较客观地对多指标进行综合评价,计算的权重值分布域也更宽,但层次分析法不易构造判断矩阵;模糊综合评价法是层次分析法的一种扩展,在算法上更有利于计算,且评价结果合理可靠.关键词:多目标综合评价;专家打分法;主成分分析法;层次分析法;模糊综合评价法中图分类号:K901.8文献标志码:ADOI:10.3969/j.issn.1000-2375.2016.
3、02.015Comparisonandanalysisofthefourmethodsofdeterminingweightsinmulti-objectivecomprehensiveevaluationHEChao,LIMeng,LITingting,PENGXue,LIJie,ZHAOJinhui(SchoolofResourcesandEnvironmentalScience,HubeiUniversity,Wuhan430062,China)Abstract:Currently,themulti-objectivecomprehensiveevaluation
4、methodtoascertaintheweightofevaluationindexesincludtheexpertscoringmethod,principalcomponentanalysis(PCA),analytichierarchyprocess(AHP)andfuzzycomprehensiveevaluationmethod(FCEM),etc.Thesamesetofindexsystem,ifitisnotthesameasthemethod,thecorrespondingevaluationresultswillbedifferent.Inth
5、ispaper,wecomparedresearchofthefourmethodsofdeterminingtheweigh.Inourresearch,10drinkingwatersourcesastheresearchobjectinacity,andchoosewaterconsumptionperunitofGDP,theunitsurfaceareaofTPloadandloadofCOD,nearlycomprehensiveevaluation.Byevaluatingtheresultsofthecomparativeanalysisshowedth
6、at:inthemulti-objectivecomprehensiveevaluation,usingexpertscoringmethodtodetermineindexweightadvantagemethodissimple,thedisadvantageisthattheaccuracyislower;usingPCAcanavoidsubjectivearbitrariness,mostsignificantly,thedifferencesofperformanceevaluationindex,butthecalculationprocessismore
7、complexandrequirebasicaccuratedata;theAHPcanbeobjectivelytomulti-indexcomprehensiveevaluation,thecalculationoftheweightvaluedistributionregioniswider,butisnoteasytoconstructjudgmentmatrixanalytichierarchyprocess;FCEMisanextensionofAHP,onthealgorithmismoreadvantageoustocal
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