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Provably Personalized and Robust Federated Learning

Mariel Werner

PhD Student, Department of Electrical Engineering and Computer Science, UC Berkeley

I will be discussing my recent work on personalization in federated learning. Federated learning is a powerful distributed optimization framework in which multiple clients collaboratively train a global model without sharing their raw data. In this work, we tackle the personalized version of the federated learning problem. In particular, we ask: throughout the training process, can clients identify a subset of similar clients and collaboratively train with just those clients? In the affirmative, we propose simple clustering-based methods which are provably optimal for a broad class of loss functions (the first such guarantees), are robust to malicious attackers, and perform well in practice.

Bio: Mariel Werner is a 5th-year PhD student in the Department of Electrical Engineering and Computer Science at UC Berkeley advised by Michael I. Jordan. Her research focus is federated learning, with a particular interest in economic applications. Currently, she is working on designing data-sharing mechanisms for firms in oligopolistic markets, motivated by ideas from federated learning. Recently, she has also been studying dynamics of privacy and reputation-building in principal-agent interactions. Mariel holds an undergraduate degree in Applied Mathematics from Harvard University.