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Sponsored Artificial Intelligence: A Modern Approach, Global Edition Artificial Intelligence: A Modern Approach, Global Edition

Author

A. Volodkevich

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Book Open access Sep 2026

CoSID: Concept-Conditioned Semantic-ID Decoding for Efficient Generative Recommendation

Generative recommenders retrieve items by autoregressively decoding semantic IDs (SIDs). The standard autoregressive SID interface (SID-AR) represents each history item with K code tokens, expanding a T-item history to TK tokens, while trie-constrained beam search repeatedly re-enters the full backbone during generatio...

Danil Gusak, A. Volodkevich, Evgeny Frolov · 1 citation
Book Open access Sep 2026

CoSID: Concept-Conditioned Semantic-ID Decoding for Efficient Generative Recommendation

CoSID is introduced, a concept-conditioned SID decoder that encodes the history once into a compact next-item concept and delegates the entire beam search to a lightweight KV-cached decoder.

Danil Gusak, A. Volodkevich, Evgeny Frolov · 1 citation

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