arxivcs.LGcs.DC2026-07-23
Spectral Transformation for Layer-wise Global Rank Discovery in Federated LoRA for Vision Transformers
Hariharan Ramesh, Jyotikrishna Dass
Fine-tuning Vision Transformers (ViTs) with low-rank adapters (LoRA) promises better communication efficiency under federated setup, yet existing aggregation strategies face fundamental limitations. Independently averaging these LoRA factors is mathematically inconsistent, introd…