The Qualitative Discriminating Analysis to Urban Vegetable Product Pollution State Space

This article develops a few methods to consummate previously established urban vegetable product pollution control system,the methods can be described briefly by "two-lines-one-dot-timely-monitoring and pre-warning",i.e.on the basis of previously urban vegetable product pollution control system which has been established by Multivariate statistical methods,this article uses two-step cluster analysis for vegetable product pollution space to cluster and makes use of nonparametric discriminant analysis for its pollution state to identify.The development of the methods not only make sure that the urban vegetable product pollution control system is valid,exact and scientific,but also provide a sort of double secure affirmance for the urban vegetable product pollution control system.