FedAvgM strategy: Add Nesterov Accelerated Gradient (NAG) #2762
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Correcting validation dataset references on FlowerClient class and min_eval_clients to be in accordance with the comments.
To be compatible with sanity check for the return of fit method from clients (Tuple of list,int,dict) introduced on the last version of flower.
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Issue
Description
This PR improves the FedAvgM implementation FedAvgM introducing the Nesterov Accelerated Gradient (NAG), the same as reported in the original FedAvgM paper:
https://arxiv.org/pdf/1909.06335.pdf
Related issues/PRs
N/A
Proposal
Introduce the calculation of NAG as part of the global model parameters update.
Explanation
The improvement of the introduction of NAG is reported on the FedAvgM baseline:
https://github.com/adap/flower/tree/main/baselines/fedavgm#comparison-between-the-custom-fedavgm-and-fedavgm
Checklist
#contributions)Changelog entry
Any other comments?
PR aligned with @jafermarq