Question: “You’re an ML engineer at a fitness company like Fitbit or Apple Health. Millions of users generate sensitive sensor data every day — heart rate, sleep cycles, step counts, workout patterns, etc. You want to build a model that predicts health risk or recommends personalized workouts. But due to privacy laws (GDPR, HIPAA), none […] The post AI Interview Series #3: Explain Federated Learning appeared first on MarkTechPost .