这个PPT重点讲述SOM是什么，怎样运用SOM进行分类，是个不错的介绍，通过这一介绍可以使同学们对SOM有深刻的了解-The PPT focus on the SOM what is, and how to use SOM for classification, is a good introduction, through this presentation will enable students to have a deep understanding of the SOM