基于组合权重的模糊可变模型及在防洪风险评价中应用  

Variable fuzzy model based on combined weights and its application to risk assessment for flood control engineering

作　　者：刘冀[1] 王本德[1] 

机构地区：[1]大连理工大学土木水利学院,辽宁大连116024

出　　处：《大连理工大学学报》2009年第2期272-275,共4页Journal of Dalian University of Technology

基　　金：国家科技支撑计划课题资助项目(2006BAB14B05)

摘　　要：针对以往防洪工程体系风险评价中多采用主观权重法确定各评价指标权重的不足,提出基于主客观组合权重的模糊可变模式识别模型.模型采用投影寻踪法计算客观权重,在投影目标函数中引入信息熵,投影值计算采用可变模糊集模型,从而增加了模型的可靠性.对于主客观权重的组合方法,模型采用最小鉴别信息原理推导出主客观权重组合公式.计算实例表明,该模型能较好地考虑评价指标的主客观权重,模型识别结果稳定、有效.Considering the disadvantages of using subjective weights assessment of the flood control engineering system, the variable fuzz on the combination of the subjective and objective weights is dev method is employed to calculate the objective weights in the model in the former studies for the risk y pattern recognition model based eloped. Projection pursuit （PP） , and the information entropy is considered in the PP object function. The model＇s reliability is improved d sets model for the minimum the projection value calculation. The combined weights form discriminating information principle. The case shows that ue to using ulas are obt variable fuzzy ained based on and objective identification weights can be taken into account comprehensively in the presented model, and th result is stable and valid.

关 键 词：可变模糊集 组合权重 防洪工程体系 风险评价 投影寻踪 信息熵 

分 类 号：TV87[水利工程—水利水电工程] O159[理学—数学]