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Lei Feng is a data science leader with a Ph.D. in Operations Research and Transportation Engineering from the University of Maryland. They have held various positions in prominent companies, including Manager of Data Science at FedEx Dataworks and Director of Data Science at Walmart's Last Mile Delivery Strategy and Science. Previously, Lei served as Operations Research Advisor at FedEx Corporation and as a Graduate Research Assistant at the University of Science and Technology of China. Currently, they direct data science initiatives at Walmart, focusing on leveraging AI to drive business transformation in the E-Commerce and transportation sectors.