J. Shekhawat

ADAFED-BRAINGNN: ADAPTIVE FEDERATED HYBRID CNN–GNN FRAMEWORK WITH DIFFERENTIAL PRIVACY FOR PRIVACY-PRESERVING BRAIN TUMOR DETECTION ACROSS MULTI-INSTITUTIONAL MRI REPOSITORIES

AdaFed-BrainGNN is presented, an adaptive federated learning framework extending BrainGNN-Hybrid with three innovations: adaptive client-weighting aggregation via composite quality scores; formal (ε, δ)-differential privacy via DP-SGD with Rényi DP (RDP) accounting; and structured gradient sparsification that reduces c...