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Fed-ReMasker: Federated Tabular Imputation under Feature-Level Missingness

arXiv · AI, language, vision and robotics · article · Sep 23, 2026 · UTC

Multi-center clinical studies and biomedical research collaborations increasingly seek to utilize data across centers to build models that generalize beyond any single center. This creates two distinct challenges: data protection regulations may restrict the sharing of raw patient data across institutions, while centers may collect only partially overlapping sets of features under different protocols. Federated learning enables collaborative model training without centralizing raw data. However, existing federated imputation methods rarely evaluate feature-level missingness, in which entire fe

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