Researchers at Airbnb have developed SIFT (Search Intent-to-Filter Transformer), a novel transformer-based model designed to enhance personalized filter ranking in two-sided marketplaces. SIFT learns guest preferences directly from behavioral sequences, replacing traditional manual feature engineering with a unified guest representation that supports multiple prediction tasks. This approach significantly improves booking conversion and filter engagement, as demonstrated by offline metrics showing a +51.9% increase in booking PR-AUC and a +62.8% increase in amenity-engagement PR-AUC over the previous baseline. In production, SIFT has led to a +20.0% increase in engagement with recommended filters and has been successfully extended to new filter types, including a hotel-intent filter that boosted uncancelled hotel bookings by +3.8%. AI
IMPACT Enhances personalization in e-commerce platforms, potentially improving conversion rates and user experience.
RANK_REASON Academic paper detailing a new model and its performance metrics. [lever_c_demoted from research: ic=1 ai=1.0]
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