水科学与工程技术
水科學與工程技術
수과학여공정기술
WATER SCIENCES AND ENGINEERING TECHNOLOGY
2014年
2期
69-72
,共4页
灰色聚类评估法%水质评价%动态权重%投影寻踪
灰色聚類評估法%水質評價%動態權重%投影尋蹤
회색취류평고법%수질평개%동태권중%투영심종
grey clustering evaluation%water quality assessment%dynamic weight%projection pursuit
灰色聚类综合评价方法能否成功应用主要取决于白化权函数的选取与指标权重的确定。目前灰色聚类评估确定主要分为指标变权聚类和指标定权聚类，两种方法在水质评价、空气质量评价、环境评价等各方面取得了一定的应用效果。目前对于权重的选取基本采用的是静态权重，对于随时间变化的监测序列，这样的权重选择有其不当之处，因此本文主要针对权重问题，采用投影寻踪方法计算得到静态权重，在此基础上得到基于均值的变异程度的动态权重，并将其应用于高邮湖水质评价之中。实例表明，该方法的评判结果更符合当地的水质实际情况。
灰色聚類綜閤評價方法能否成功應用主要取決于白化權函數的選取與指標權重的確定。目前灰色聚類評估確定主要分為指標變權聚類和指標定權聚類，兩種方法在水質評價、空氣質量評價、環境評價等各方麵取得瞭一定的應用效果。目前對于權重的選取基本採用的是靜態權重，對于隨時間變化的鑑測序列，這樣的權重選擇有其不噹之處，因此本文主要針對權重問題，採用投影尋蹤方法計算得到靜態權重，在此基礎上得到基于均值的變異程度的動態權重，併將其應用于高郵湖水質評價之中。實例錶明，該方法的評判結果更符閤噹地的水質實際情況。
회색취류종합평개방법능부성공응용주요취결우백화권함수적선취여지표권중적학정。목전회색취류평고학정주요분위지표변권취류화지표정권취류，량충방법재수질평개、공기질량평개、배경평개등각방면취득료일정적응용효과。목전대우권중적선취기본채용적시정태권중，대우수시간변화적감측서렬，저양적권중선택유기불당지처，인차본문주요침대권중문제，채용투영심종방법계산득도정태권중，재차기출상득도기우균치적변이정도적동태권중，병장기응용우고유호수질평개지중。실례표명，해방법적평판결과경부합당지적수질실제정황。
The successful application of grey clustering comprehensive eva luation method depends mainly on select of whiten function and determine the index weight. Currently grey clustering assessment to identify key indicators of change right into weights definition clustering and clustering indexes, both methods have achieved some results in all aspects of the application of water quality assessment, air quality assessment, and environmental evaluation. At present, for the weight of the selected basic uses static weights for changes over time to monitor the sequence , so that the weight of choice has its impropriety, this article focused on the weight problem, using projection pursuit method calculated the static weight on the basis of based on the obtained degree of variation in the mean dynamic right weight , and apply it into Gaoyou Lake water quality assessment. Examples show that the method evaluation results more in line with the actual situation of local water quality.
