arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2409.08396stat.MLcs.LGstat.AP
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联邦一次性集成聚类

Federated One-Shot Ensemble Clustering

Harvard T.H. Chan School of Public Health(哈佛陈曾熙公共卫生学院);University of Michigan(密歇根大学);Harvard Medical School(哈佛医学院);Brigham and Women’s Hospital(布莱根妇女医院)

Rui Duan, Xin Xiong, Jueyi Liu, Katherine P. Liao, Tianxi Cai

AI总结:

针对跨机构聚类的数据共享限制问题,提出仅需单轮通信、仅交换模型参数与标签的联邦一次性集成聚类FONT算法,经理论、模拟及类风湿关节炎患者数据验证,性能更优、跨站点聚类一致性更好,适用于严格隐私与通信约束的多站点聚类场景。

摘要:

跨机构的聚类分析因数据共享限制面临重大挑战。为克服这些局限,我们提出联邦一次性集成聚类(Federated One-shot Ensemble Clustering,FONT)算法,这是专为这类约束下的多站点分析定制的全新解决方案。FONT仅需站点间进行单轮通信,且仅通过交换拟合后的模型参数与类别标签来保障隐私。该算法将局部拟合的聚类模型组合为数据自适应集成模型,可广泛适用于各类聚类技术,且对站点间聚类比例的差异具有鲁棒性。我们的理论分析验证了FONT所学习的数据自适应权重的有效性,模拟研究也表明其性能优于现有基准方法。我们将FONT应用于两个医疗系统的类风湿关节炎患者亚组识别,结果显示该方法提升了跨站点患者聚类的一致性,而局部拟合的聚类可迁移性较差。FONT尤其适用于通信和隐私约束严格的实际场景,为多站点聚类提供了可扩展且实用的解决方案。

英文摘要:

Cluster analysis across multiple institutions poses significant challenges due to data-sharing restrictions. To overcome these limitations, we introduce the Federated One-shot Ensemble Clustering (FONT) algorithm, a novel solution tailored for multi-site analyses under such constraints. FONT requires only a single round of communication between sites and ensures privacy by exchanging only fitted model parameters and class labels. The algorithm combines locally fitted clustering models into a data-adaptive ensemble, making it broadly applicable to various clustering techniques and robust to differences in cluster proportions across sites. Our theoretical analysis validates the effectiveness of the data-adaptive weights learned by FONT, and simulation studies demonstrate its superior performance compared to existing benchmark methods. We applied FONT to identify subgroups of patients with rheumatoid arthritis across two health systems, revealing improved consistency of patient clusters across sites, while locally fitted clusters proved less transferable. FONT is particularly well-suited for real-world applications with stringent communication and privacy constraints, offering a scalable and practical solution for multi-site clustering.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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