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Author

Jingtong Gao

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Preprint Aug 2026

Hierarchical Quantization with Domain-Adaptive Sparse Routing for Generative Cross-Domain Recommendation

Generative Recommendation (GenRec) represents a promising paradigm that achieves remarkable empirical success by encoding items as compact Semantic IDs (SIDs) and modeling user behavior via next-token prediction across diverse recommendation scenarios. Extending this paradigm to cross-domain recommendation is challengi...

Haiying He, Xiao-Peng Li, Yuchen Gu et al. · 0 citations
Book Open access Aug 2026

Hierarchical Residual Policy Optimization for Generative Recommendations

Hierarchical Residual Policy Optimization (HRPO), a post-training framework that converts item-level outcomes into dense, token-aligned learning signals for conservative token-wise improvement, is proposed.

Kaifeng Guo, Yiming Yang, Jingtong Gao et al. · 0 citations

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