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Fine-Tuning Global Model via Data-Free Knowledge Distillation for Non-IID Federated Learning

CVPR 2022 · Federated learning and privacy › Personalized and heterogeneous FL · approach: Non-IID federated learning · 370 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
fine-tune the aggregated global model with data-free distillation from local modelsSCAFFOLD aggregation · CIFAR10, β=0.3test accuracy (%): 82.14±1.20 -> 84.38±0.49Helped
fine-tune the aggregated global model with data-free distillation from local modelsSCAFFOLD aggregation · CIFAR100, β=0.3test accuracy (%): 54.36±0.32 -> 55.96±0.39Helped
add hard sample mining (ablation)FedFTG · CIFAR10, β=0.3, 500 roundstest accuracy (%): 82.49±0.42 -> 83.43±0.10Helped
add customized label sampling (ablation)FedFTG · CIFAR10, β=0.3, 500 roundstest accuracy (%): 82.39±0.22 -> 83.43±0.10Helped
add class-level ensemble (ablation)FedFTG · CIFAR10, β=0.3, 500 roundstest accuracy (%): 82.40±0.21 -> 83.43±0.10Helped
add hard sample mining, customized label sampling, and class-level ensemble (ablation)FedFTG · CIFAR10, β=0.3, 500 roundstest accuracy (%): 81.98±0.14 -> 83.43±0.10Helped
add classification loss (ablation)FedFTG · CIFAR10, β=0.3, 500 roundstest accuracy (%): 82.50±0.55 -> 83.43±0.10Helped
add diversity loss (ablation)FedFTG · CIFAR10, β=0.3, 500 roundstest accuracy (%): 82.52±0.35 -> 83.43±0.10Helped
add classification and diversity losses (ablation)FedFTG · CIFAR10, β=0.3, 500 roundstest accuracy (%): 82.12±0.16 -> 83.43±0.10Helped
replace KL divergence with mean square error (ablation)FedFTG · CIFAR10, β=0.3, 500 roundstest accuracy (%): 83.43±0.10 -> 10.17±0.26Hurt
generate pseudo data at feature level instead of input level (ablation)FedFTG · CIFAR10, β=0.3test accuracy (%): 84.38±0.49 -> 82.76±0.81Hurt
add server-side FedFTG fine-tuningFedAvg · CIFAR10, β=0.3test accuracy (%): 79.59±1.01 -> 82.27±0.67Helped

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