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Fed-CBS: A Heterogeneity-Aware Client Sampling Mechanism for Federated Learning via Class-Imbalance Reduction. (arXiv:2209.15245v1 [cs.LG])
Oct. 3, 2022, 1:11 a.m. | Jianyi Zhang, Ang Li, Minxue Tang, Jingwei Sun, Xiang Chen, Fan Zhang, Changyou Chen, Yiran Chen, Hai Li
cs.LG updates on arXiv.org arxiv.org
Due to limited communication capacities of edge devices, most existing
federated learning (FL) methods randomly select only a subset of devices to
participate in training for each communication round. Compared with engaging
all the available clients, the random-selection mechanism can lead to
significant performance degradation on non-IID (independent and identically
distributed) data. In this paper, we show our key observation that the
essential reason resulting in such performance degradation is the
class-imbalance of the grouped data from randomly selected clients. …
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