Figure 1.

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Illustration of the federated learning architecture showcasing the interaction between clients and a global server. Each client clienti computes a gradient ∇ωi with respect to its local data and sends it to the global server. The server then aggregates these gradients (ωg) to update the global model. The diagram also highlights a potential data leakage scenario, where the aggregated gradients can lead to the exposure of features from the real data, as depicted with the example images of a “cat” and a “dog”

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