In view of the uncertainty of evaluation indicators for water quality the theory of set pair analysis is adopted.
针对水质评价中各评价指标的不确定性，将集对分析理论应用于水质综合评价中。
MIMO and MISO models were established for the water quality of a sewage treatment factory by using the BP network improved, and both's comparison and evaluation analysis were carried out.
利用改进后的BP网络对某污水处理厂的进出水水质建立了MIMO和MISO模型，并进行了对比和评价分析。
Based on the principal component analysis theory, a water quality comprehensive evaluation model was established and was used to evaluate the water quality of the South Feihe River.
基于主成分分析理论，建立了水质综合评价模型，以南淝河为例，对南淝河的水环境质量进行综合评价。
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