摘要
针对投影寻踪(PP)模型在实际应用中最佳投影方向a难以确定的不足,利用差分进化算法(DE)搜寻PP模型最佳投影方向,提出DE-PP水质综合评价模型,以云南省滇池流域4个监测断面2003—2013年水质评价为例进行实例研究,选取对水体影响较大的氨氮等5项水质评价因子,利用各指标标准阈值z构造水质综合评价分级标准。结果表明:DE-PP模型评价结果客观、合理,能够有效应用于水质综合评价。
Aiming at the deficiency of the projection pursuit( PP) model in the practical application the best projection direction is difficult to determine,using the differential evolution algorithm( DE) to search for the best projection direction PP model,put forward the DE-PP water quality comprehensive evaluation model,taking the Yunnan River Basin of Dianchi province from 2003 to 2013 4 monitoring sections water quality evaluation as an example for case study,the selection of water effect of large ammonia nitrogen 5 water quality evaluation index,using the index standard threshold structure of comprehensive evaluation of water quality grading standard.The results show that: the DE-PP model evaluation result is objective and reasonable,can be effectively applied to the comprehensive assessment of water quality.
出处
《人民珠江》
2016年第2期97-101,共5页
Pearl River
关键词
水质评价
投影寻踪
差分进化算法
evaluation of water quality
projection pursuit
differential evolution algorithm
