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From Clicks to Conversions: Architecting Shopping Conversion Candidate Generation at Pinterest

calendar_today April 27, 2026 person Pinterest Engineering domain pinterest
Authors: Richard Huang Machine Learning Engineer II; Yu Liu Senior Machine Learning Engineer; Ziwei Guo Senior Machine Learning Engineer; Andy Mao Staff Machine Learning Engineer; Supeng Ge Sr. Staff Machine Learning Engineer Introduction At Pinterest, conversion ads are crucial for matching users with products they are likely to purchase, boosting value for both users and advertisers¹. While conversion actions like checkout or add-to-cart are highly valuable, they are also technically challenging to optimize for.
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