河流健康评价中赋权方法的研究
发布时间：2019-06-06 21:10
【摘要】：河流健康评价体系中指标众多,指标权重的确定是关键步骤之一。针对指标权重计算的问题,首先介绍了层次分析法、熵值法、超标倍数法及主成分分析法四种指标权重赋权方法,再基于离差平方和准则构造最优化组合赋权法,将四种赋权方法结合,并采用指数型隶属函数得到模糊关系矩阵。对比各种方法的评价结果,并应用到某市河流健康评价中,不同赋权方法的计算结果均表明该河流健康状况为良,符合实际情况,表明不同赋权方法均有其合理性,为河流健康评价研究奠定了基础。
[Abstract]:There are many indexes in river health evaluation system, and the determination of index weight is one of the key steps. In order to solve the problem of index weight calculation, this paper first introduces four index weight weighting methods: analytic hierarchy process (AHP), entropy method, excess multiple method and principal component analysis method, and then constructs the optimal combination weighting method based on the sum of square of deviation. The fuzzy relation matrix is obtained by combining the four weighted methods and using the exponential membership function. Compared with the evaluation results of various methods and applied to the river health evaluation of a city, the calculation results of different weighting methods show that the health status of the river is good, which is in line with the actual situation, and indicates that different weighting methods are reasonable. It lays a foundation for the study of river health evaluation.
【作者单位】： 河海大学水文水资源学院;句容水利农机局;江苏省水利勘测设计研究院有限公司;
【基金】：国家重点基础研究发展计划(973计划)(2012CB417006) “十一五”国家科技支撑计划项目(2009BAC56B03)
【分类号】：X824;TV213.4
本文编号：2494601
[Abstract]:There are many indexes in river health evaluation system, and the determination of index weight is one of the key steps. In order to solve the problem of index weight calculation, this paper first introduces four index weight weighting methods: analytic hierarchy process (AHP), entropy method, excess multiple method and principal component analysis method, and then constructs the optimal combination weighting method based on the sum of square of deviation. The fuzzy relation matrix is obtained by combining the four weighted methods and using the exponential membership function. Compared with the evaluation results of various methods and applied to the river health evaluation of a city, the calculation results of different weighting methods show that the health status of the river is good, which is in line with the actual situation, and indicates that different weighting methods are reasonable. It lays a foundation for the study of river health evaluation.
【作者单位】： 河海大学水文水资源学院;句容水利农机局;江苏省水利勘测设计研究院有限公司;
【基金】：国家重点基础研究发展计划(973计划)(2012CB417006) “十一五”国家科技支撑计划项目(2009BAC56B03)
【分类号】：X824;TV213.4
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