Projection pursuit model for comprehensive evaluation of water quality
水质综合评价的投影寻踪模型

In order to test the evaluation criterions of water quality,to resolve the nonuniformity problem of evaluation results of water quality indexes,and to raise the resolution of water quality comprehensive evaluation,a new model projection pursuit(PP)model is suggested,where the evaluation results are real numbers.A scheme of PP modeling is also presented to reduce the computational amount,a new function of projection indexes is given,and it is suggested that both the function of projection indexes and the parameters of PP model can be optimized by using real coding based genetic algorithm.The calculation example shows that the scheme is effective and general,which can be applied to comprehensive evaluation of other environmental quality.