Hao Yu is an accomplished Principal Applied Scientist at Amazon, specializing in machine learning and optimization. They previously served as a Senior Applied Scientist at Amazon, where they focused on developing machine learning and decision models for recommendation, advertisement, and pricing. Hao's extensive experience includes roles at Alibaba Group as a Senior Algorithm Engineer, where they contributed to research published in prestigious conferences like NeurIPS and ICML, and at LinkedIn as a Staff ML Engineer, developing its first Federated Learning model for ads. Hao holds a Ph.D. in Electrical Engineering and an M.A. in Applied Mathematics from the University of Southern California, as well as an MPhil from The Hong Kong University of Science and Technology.