聚类分析又称群分析，它是研究（样品或指标）分类问题的一种统计分析方法，同时也是数据挖掘的一个重要算法。本代码主要用于过程监控故障检测-Clustering analysis, also called group analysis, which is a statistical analysis method of the research (sample or index) classification problem, is also an important algorithm of data mining. This code is mainly used for process monitoring and fault detection