水环境模糊综合评价模型优化  

Optimization for Water Environment Fuzzy Comprehensive Evaluation Model

作　　者：李惠君[1,2] 李淑芳[1] 刘雪飞[1] 

机构地区：[1]中国环境管理干部学院信息工程系,河北秦皇岛066012 [2]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《计算机仿真》2010年第7期187-190,共4页Computer Simulation

摘　　要：研究水环境保护,减少污染,水环境质量评价是环境质量评价中的重要组成部分,为区域环境系统的污染控制规划及环境系统工程方案的制定提供依据。模糊综合评价法是目前应用较广的水环境评价方法,根据水环境评价的特点,在模糊综合评价模型基础上,使用指数隶属函数,解决了非相邻等级隶属函数为0时,被忽略了其对评价结果影响的问题;引入信息熵,将熵值系数用以修正采用超标比计算的评价因子权重,避免了权重确定中过于依赖严重超标的评价因子。经实验验证,评价结果更合理。According to the water environment assessment characteristics,the fuzzy comprehensive model was optimized. First,the exponential membership function was put forward.The problem was solved but the result was warped because the affect of this indicator was neglected when the membership function of non - neighboring grade is zero.Second,when the over - standard ratio of some indicator is huge,the indicator was excessively relied on during the evaluation.The introduction of the information entropy has revised the weight coefficient with the over - standard ratio.The result in the test showed that the evaluation result is more reasonable.

关 键 词：水环境评价 模糊综合评价 信息熵 权重 隶属度函数 

分 类 号：N945.12[自然科学总论—系统科学]