说明：  聚类分析指将对象的集合分组为多个类的过程。聚类分析的目标就是在相似的基础上收集数据来分类。在不同的应用领域，很多聚类技术都得到了发展，这些技术方法被用作描述数据，衡量不同数据源间的相似性，以及把数据源分类到不同的簇中。
(Cluster analysis refers to the process of grouping a collection of objects into multiple classes. The goal of cluster analysis is to collect data for classification on a similar basis. In different application fields, many clustering technologies have been developed. These technical methods are used to describe data, measure similarities between different data sources, and classify data sources into different clusters.)