四川精神卫生2024，Vol.37Issue(z1)：71-77,7.DOI:10.11886/scjsws20240310001
无序样品聚类分析——基于第一组距离法和离差平方和法
Cluster analysis of disordered samples:based on the methods of the first set of distances and the Ward's method
胡纯严 1胡良平2
作者信息
- 1. 军事科学院研究生院,北京 100850
- 2. 军事科学院研究生院,北京 100850||世界中医药学会联合会临床科研统计学专业委员会,北京 100029
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摘要
Abstract
The purpose of this article was to introduce the basic concepts,calculation methods,two examples and the implementation of SAS calculation methods related to the cluster analysis of disordered samples.The basic concepts included nominal variables,ordered variables,qualitative variables,interval variables ratio variables and distance.The calculation methods involved the first set of 15 distance calculation formulas and the Ward's method calculation formula for measuring the distance between two clusters of samples.The data in the two examples were"physical morphology data of 16-year-old boys from 27 ethnic minorities in China"and"labor health supervision data from 14 provinces and municipalities in China in 1995".Using SAS software,Cluster analysis of disordered samples was performed on the data from two instances,and the SAS output results were explained.关键词
名义变量/有序变量/区间变量/比率变量/谱系聚类分析Key words
Nominal variable/Ordered variables/Interval variables/Ratio variables/Hierarchical cluster analysis分类
医药卫生引用本文复制引用
胡纯严,胡良平..无序样品聚类分析——基于第一组距离法和离差平方和法[J].四川精神卫生,2024,37(z1):71-77,7.
