Contextual Ranker in Production: Session-Aware Similar Item Ranking for Lower-Funnel E-Commerce
This talk presents Contextual Ranker, a production ranking system for eBay's ''Similar Items'' module on product detail pages. The problem sits at the lower funnel of e-commerce, where users are evaluating whether to purchase the current listing that they are viewing (the seed item ) or switch to an alternative. In thi...