
HiGenTrans: Hierarchical LLM Knowledge Transfer for Generative Recommendation
HiGenTrans is a three-level framework that transfers LLM knowledge into generative recommenders that produce item Semantic IDs (SIDs). Global Semantic Priming adds an LLM user representation to the start-of-sequence embedding, Hierarchical Representation Transfer aligns LLM and GenRec layers, and Multi-Signal Decision Calibration reranks beam-search outputs with a mixture-of-experts. On three public benchmarks it improves Recall@10 by up to 12.9% and NDCG@10 by up to 33.7%.
researchΒ· Added 3 Nov 2026, published 31 Oct 2026





































