Exploring the Relationship Between Privacy and Utility in Mobile Health: Algorithm Development and Validation via Simulations of Federated Learning, Differential Privacy, and External Attacks

Alexander Shen   ^{1, 2} , MSc ;   Luke Francisco   ¹ , BA ;   Srijan Sen   ^{3, 4} , MD, PhD ;   Ambuj Tewari   ^{1, 5} , PhD

¹ Department of Statistics, University of Michigan, Ann Arbor, MI, United States

² Department of Statistics and Data Science, Carnegie Mellon University, Pittsburgh, PA, United States

³ Eisenberg Family Depression Center, University of Michigan, Ann Arbor, MI, United States

⁴ Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI, United States

⁵ Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, United States