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cs.LG2026
Proximity Features: Privacy-Compliant Cold-Start Personalization at Airbnb
Wei Jiang, Bin Xu, Hui Gao +6
Personalization in two-sided marketplaces relies heavily on user-level features, yet for platforms with infrequent, high-consideration purchases, a large fraction of users lack suf…
cs.IR2026
CASTLE: Contrastive and Seed-Guided Training for Cold-Start Natural Language Search
Wendy Ran Wei, Hao Li, Weiwei Guo +9
Deploying natural language search systems presents a critical cold-start challenge: no real user queries to learn linguistic patterns, and no relevance labels to train ranking mode…