Publication
IEEE SaTML 2023
Conference paper

Reprogrammable-FL: Improving Utility-Privacy Tradeoff in Federated Learning via Model Reprogramming

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Abstract

Model reprogramming (MR) is an emerging and powerful technique that provides cross-domain machine learning by enabling a model that is well-trained on some source task to be used for a different target task without finetuning the model weights. In this work, we propose Reprogrammable-FL, the first framework adapting MR to the setting of differentially private federated learning (FL), and demonstrate that it significantly improves the utility-privacy tradeoff compared to standard transfer learning methods (full/partial finetuning) and training from scratch in FL. Experimental results on several deep neural networks and datasets show up to over 60\% accuracy improvement given the same privacy budget. The code repository can be found at https://github.com/IBM/reprogrammble-FL.

Date

08 Feb 2023

Publication

IEEE SaTML 2023

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