Cluster analysis of directional data is important to temporal clustering analysis of disease and stratification of season.
方向数据的聚类分析法对与疾病的时间聚集性进行分析、季节分层分类等有极其重要的意义。
2
BackgroundMetabolic syndrome (MS) is the co-occurrence of multiple metabolic abnormalities in individuals and this clustering phenomenon drastically increase risk for cardiovascular disease.
背景代谢综合征(MS)是多种代谢异常同时发生于同一个体的临床现象，可明显增加心血管疾病的危险性。
3
The laws of syndrome factor combination and syndrome factor distribution at different disease stages were discussed by applying the methods of clustering and frequency analysis.