arXiv:2603.28455cs.LGcs.AI2026-03

针对医疗联邦学习中数据异构问题,动态分配记忆回放资源以缓解遗忘。

FeDMRA: Federated Incremental Learning with Dynamic Memory Replay Allocation

  • 按数据异构性动态分配客户端记忆存储空间
  • 在三个医学图像数据集上性能显著优于基线模型
  • 适合关注隐私保护下持续学习的医疗AI研究者

在联邦医疗系统中,联邦类增量学习(FCIL)已成为关键范式,可在保障数据隐私的前提下实现分布式客户端的持续自适应模型学习。然而在实际应用中,分布式框架内各代理节点的数据常呈现非独立同分布(non-IID)特性,导致传统持续学习方法失效。为此,本文覆盖更全面的增量任务场景,提出基于数据回放机制的动态记忆分配策略,充分挖掘数据异构性的内在潜力,同时兼顾各参与客户端的性能公平性,构建出平衡且自适应的灾难性遗忘缓解方案。与固定分配客户端示例记忆空间不同,所提方案强调在有限存储资源下对客户端进行合理分配,以提升模型性能。此外,在三个医学图像数据集上开展大量实验,结果表明相较现有基线模型有显著性能提升。

原文摘要 · Abstract (English)

In federated healthcare systems, Federated Class-Incremental Learning (FCIL) has emerged as a key paradigm, enabling continuous adaptive model learning among distributed clients while safeguarding data privacy. However, in practical applications, data across agent nodes within the distributed framework often exhibits non-independent and identically distributed (non-IID) characteristics, rendering traditional continual learning methods inapplicable. To address these challenges, this paper covers more comprehensive incremental task scenarios and proposes a dynamic memory allocation strategy for exemplar storage based on the data replay mechanism. This strategy fully taps into the inherent potential of data heterogeneity, while taking into account the performance fairness of all participating clients, thereby establishing a balanced and adaptive solution to mitigate catastrophic forgetting. Unlike the fixed allocation of client exemplar memory, the proposed scheme emphasizes the rational allocation of limited storage resources among clients to improve model performance. Furthermore, extensive experiments are conducted on three medical image datasets, and the results demonstrate significant performance improvements compared to existing baseline models.

联邦学习增量学习医疗AI记忆回放

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