Evaluation of Yangtze River Water Quality Based on Hierarchical Genetic Algorithm Projection Pursuit Model
Based on the lack of Hierarchical genetic algorithm Projection Pursuit Model,Projection Pursuit Model is proposed based on accelerating Hierarchical genetic algorithm,which can improve the global search ability and convergence speed,and is applied to evaluate water quality of the Yangtze River.Using eight sections water quali-ty indicators for monitoring data of the Three Gorges Reservoir,Projection Pursuit Model is established based on accelerating Hierarchical genetic algorithm and the water quality of each section is evaluated.Evaluation shows that the water quality in this basin is good as a whole.The water quality grade is mainly distributed in Class Ⅱ,Class Ⅲ and Class IV in Environmental Quality Standard for Surface Water(GB3838-2002).The model can rea-sonably evaluate water quality and is worthy of widespread application.
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