基于聚类分析和因子分析的混合尘源解析新方法

摘要

The cluster analysis and factor analysis methods were successfully used to solve the problem of multicollinearity in CMB ( chemical mass balance)model. First the cluster analysis was used to analyse the colinearity among the emission sources, then the main factors of the emission sources with strong colinearity were selected by principal component analysis. Bring them and other single sources into the CMB to calculate.Finally returned the main factors contribution to single source of mixed dust sources, the contribution of each emission sources could be acquired.Compared with the other methods,the results showed that the analytical results were realistic and the method was feasible.%运用聚类分析扣因子分析来解决大气颗粒物源解析CMB模型(化学质量平衡模型)在解析混合尘源中遇到的共线性问题.即通过聚类分析对排放源进行共线性强弱分类,根据分析结果对其中共线性较强的一类(扬尘类源)提取主因子,并和其他独立尘源共同带入CMB模型进行计算.最后将主因子贡献量返回,得到各个源贡献值.通过和其他方法的效果进行比较,结果表明,该方法解析结果符合实际,具有可行性.