| 胡纯严,胡良平.无序样品聚类分析——基于第四组距离法和质心法[J].四川精神卫生杂志,2024,37(S1):90-94.Hu Chunyan,Hu Liangping,Cluster analysis of disordered samples： based on the methods of the fourth set of distance and the centroid method[J].SICHUAN MENTAL HEALTH,2024,37(S1):90-94 |
| Cluster analysis of disordered samples： based on the methods of the fourth set of distance and the centroid method |
DOI：10.11886/scjsws20240310004 |
| English keywords:Asymmetric nominal variables Disordered samples Dice coefficient Hierarchical cluster analysis Dendrogram |
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| The purpose of the paper 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 asymmetric nominal variables， asymmetric ratio variables， Dice coefficient and Kulcynski 1 coefficient. The calculation methods involved measuring the distance between two samples using the fourth set of distance methods （8 in total） and measuring the distance between two classes of samples using the centroid method. The data in the two examples were "whether the nine divorce reasons apply to each state in the United States" and "the first symptom situation of ischemic stroke patients". Using SAS software， Cluster analysis of disordered samples was performed on the data in the first instance， and the SAS output results were explained. |
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