Conclusions - During adolescence, metabolic risk factor clustering is consistent.
结论——在青少年时期，代谢危险因子的聚类是一致的。
Objective: to investigate the cardiovascular risk factor and their clustering in elderly persons of impaired glucose tolerance.
目的：分析老年糖耐量低减患者心血管病危险因素的聚集情况。
Inspired by the nonnegative matrix factorization algorithm, we put forward an fuzzy text clustering method based on nonnegative factor analysis.
本文借助于非负矩阵分解算法，提出了一种基于非负因子分析的模糊文本聚类方法。
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