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arXiv · 2312.12824

FedSODA: Federated Cross-assessment and Dynamic Aggregation for Histopathology Segmentation

Yuan Zhang·Yaolei Qi·Xiaoming Qi·Lotfi Senhadji·Yongyue Wei·Feng Chen·Guanyu Yang
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Abstract

Federated learning (FL) for histopathology image segmentation involving multiple medical sites plays a crucial role in advancing the field of accurate disease diagnosis and treatment. However, it is still a task of great challenges due to the sample imbalance across clients and large data heterogeneity from disparate organs, variable segmentation tasks, and diverse distribution. Thus, we propose a novel FL approach for histopathology nuclei and tissue segmentation, FedSODA, via synthetic-driven cross-assessment operation (SO) and dynamic stratified-layer aggregation (DA). Our SO constructs a cross-assessment strategy to connect clients and mitigate the representation bias under sample imbalance. Our DA utilizes layer-wise interaction and dynamic aggregation to diminish heterogeneity and enhance generalization. The effectiveness of our FedSODA has been evaluated on the most extensive histopathology image segmentation dataset from 7 independent datasets. The code is available at https://github.com/yuanzhang7/FedSODA.

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Yuan Zhang, Yaolei Qi, Xiaoming Qi, Lotfi Senhadji, Yongyue Wei, Feng Chen, Guanyu Yang. 2023-12-20. FedSODA: Federated Cross-assessment and Dynamic Aggregation for Histopathology Segmentation. https://arxiv.org/abs/2312.12824

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