Parameter-Efficient and Personalized Federated Training of Generative Models at the Edge

• URL: http://arxiv.org/abs/2511.11585v1
• Date: Sat, 11 Oct 2025 09:33:15 GMT
• Title: Parameter-Efficient and Personalized Federated Training of Generative Models at the Edge
• Authors: Kabir Khan, Manju Sarkar, Anita Kar, Suresh Ghosh,
• Abstract summary: FedGen-Edge is a framework that decouples a frozen, pre-trained global backbone from lightweight client-side adapters and federates only the adapters.<n>On language modeling (PTB) and image generation (CIFAR-10), FedGen-Edge achieves lower perplexity/FID and faster convergence than strong baselines.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Large generative models (for example, language and diffusion models) enable high-quality text and image synthesis but are hard to train or adapt in cross-device federated settings due to heavy computation and communication and statistical/system heterogeneity. We propose FedGen-Edge, a framework that decouples a frozen, pre-trained global backbone from lightweight client-side adapters and federates only the adapters. Using Low-Rank Adaptation (LoRA) constrains client updates to a compact subspace, which reduces uplink traffic by more than 99 percent versus full-model FedAvg, stabilizes aggregation under non-IID data, and naturally supports personalization because each client can keep a locally tuned adapter. On language modeling (PTB) and image generation (CIFAR-10), FedGen-Edge achieves lower perplexity/FID and faster convergence than strong baselines while retaining a simple FedAvg-style server. A brief ablation shows diminishing returns beyond moderate LoRA rank and a trade-off between local epochs and client drift. FedGen-Edge offers a practical path toward privacy-preserving, resource-aware, and personalized generative AI on heterogeneous edge devices.

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