Beyond Semantic IDs: Finite-Beam Reachability and Continuous-Query Generation in Generative Recommendation
Generative recommendation (GR) of social media platforms commonly retrieves items by autoregressively decoding discrete Semantic IDs (SIDs) with finite-width beam search. This work examines how this output interface constrains whether held-out targets enter finite returned lists, while distinguishing catalog-wide score...
Yu Sun, Ren Xiang, Zuo-Dong Xiang et al.
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