基于信息相对重要性的主成分法优选环境测点

Optimization of Environmental Monitoring Sites by Principal Component Subset Selection Based on Informative Relative Importance

提出将单项污染物测值反映的信息量表示为相对重要性和将单项污染物的相对重要性综合为多项污染物的综合相对重要性的计算公式。根据测点信息的综合相对重要性，再用主成分子集合选择法优化选点。该方法不仅减少了计算量，也易于确定多项污染物的综合优化点。该方法用于贵阳市大气环境测点优选出的测点能反映该市的环境质量。

The concept of relative importance to the information from the monitoring values of single pollutant was used to select the optimal numbers of environmental monitoring sites,and formula was presented for comprehensive relative importance of multi-pollutant.On the basis of comprehensive relative importance of information in sites,the optimization of environmental monitoring sites was carried out by principal component subset selection.This method not only reduces the calculation but also determines the comprehensive optimal sites of multi-pollutant easily.The monitoring sites selected from atmospheric environmental monitoring sites in Guiyang City can represent the atmospheric environmental quality.