Personalized Federated Learning via Stacking
<|reference_start|>Personalized Federated Learning via Stacking: Traditional Federated Learning (FL) methods typically train a single global model collaboratively without exchanging raw data. In contrast, Personalized Federated Learning (PFL) techniques aim to create multiple models that are better tailored to individual clients' data. We present a novel personalization approach based on stacked generalization where clients directly send each other privacy-preserving models to be used as base models to train a meta-model on private data. Our approach is flexible, accommodating various privacy-preserving techniques and model types, and can be applied in horizontal, hybrid, and vertically partitioned federations. Additionally, it offers a natural mechanism for assessing each client's contribution to the federation. Through comprehensive evaluations across diverse simulated data heterogeneity scenarios, we showcase the effectiveness of our method.<|reference_end|>
@article{cantu-cervini2024personalized,
    title={Personalized Federated Learning via Stacking},
    author={Emilio Cantu-Cervini},
    journal={arXiv preprint arXiv:2404.10957},
    year={2024},
    archivePrefix={arXiv},
    eprint={2404.10957},
    primaryClass={cs.LG cs.CR cs.DC}
}