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Xiao-Yong Li

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Preprint Sep 2026

LIFT: A Lifecycle-aware Interaction Factorization Transformer for Unified Retrieval and Ranking

Cascaded recommender systems use the same user history for retrieval and ranking, while the two stages have access to different information at different points of an interaction. We propose the Lifecycle-aware Interaction Factorization Transformer (LIFT), which decomposes each interaction into ordered Request, Item, Co...

Ke-Ji Miao, En-Hao Cheng, Yan Li et al. · 0 citations

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