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Ling Leng is an accomplished professional with extensive experience in data science and machine learning, currently serving as the Head of Ads Ranking at Pinterest since June 2022. Previously, Ling held the position of Director II in Ads Engineering at Coupang and was a Senior Manager of Research Science in Core AI at Amazon. Early career roles include Staff Data Scientist at Google, where work focused on YouTube Ads Measurement, and various positions at Amazon that concentrated on A/B testing platforms and supply chain optimization. Ling's foundational expertise is backed by a B.S. in Statistics from Peking University and a Ph.D. in Statistics from Stony Brook University. Notably, Ling has made significant contributions to predictive modeling, statistical consulting, and cross-functional collaboration, demonstrating a strong capability to drive data-driven decisions across organizations.