所谓“物以类聚”,就是把具有某种相同或相似特征的事物聚为一类。在现实生活中,我们一般不去研究单个事物,而更多的去分析某一类具有代表性的问题。所以,聚类分析正是实际中我们常用的分类工具之一。它按照研究的目的,找出物与物之间的相同点和类与类之间的差异,使我们在解决? The so-called “things to gather together,” is to have some kind of things with the same or similar characteristics together. In real life, we generally do not study a single thing, but more to analyze a representative of the type of problem. Therefore, cluster analysis is actually one of our commonly used classification tools. According to the purpose of the study, it finds out the similarities between the objects and the difference between the classes and the classes, so that we can solve them?