地表水水质评价模型及其遗传算法求解  

The estimate model designed for the surface water quality and its solution with a genetic algorithm

作　　者：郑巧仙[1] 刘金英[2] 李明[3] 

机构地区：[1]湖北大学数学与计算机科学学院,湖北武汉430062 [2]吉林大学数学科学学院,吉林长春130012 [3]武汉科技大学理学院,湖北武汉430081

出　　处：《湖北大学学报（自然科学版）》2011年第4期475-478,共4页Journal of Hubei University：Natural Science

基　　金：国家自然科学基金(60603069);湖北省自然科学基金项目(2009CDB144)资助

摘　　要：以标准等级水体为样本点构造样本空间,借鉴无单元思想,建立带权的地表水水质评价模型.对模型中的参数,根据数据拟合的思想,将问题转化为一个非线性优化问题,然后利用遗传算法进行求解.用已知算例对评价模型的合理性进行对比检验,并将其成功应用于密云水库样本点水质的综合评价,最后将此模型推广到一般情形的评价问题.The estimate model with weights for the surface water quality was set up,using for the idea of naught unit based on the sample space structrued with standard level of water samples.The parameter problem of the model could be transformed into a nonlinear optimization problem using for the idea of data fitting.The genetic algorithm was used to solve the weight of the model.A contrast test was done to check up the rationality of the model with an eaemple,and the model was applied successfully in the evaluation of sample point of Miyun reservoir.At the last,the model was promted to the general evaluation problems.

关 键 词：地表水水质评价模型 遗传算法 无单元 

分 类 号：X824[环境科学与工程—环境工程]