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Cheng-Guo Yin

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Preprint Sep 2026

ChronicleRec: Pre-training Temporally Anchored Tokens for Lifelong User Modeling

ChronicleRec is a pre-train-and-transfer framework that compresses an ultra-long behavior sequence once into a chronologically ordered set of Chronicle Tokens, which can be cached per user, decoupling ultra-long sequence modeling from online candidate scoring.

Chengkai Huang, Yu-Bin Sheng, Liang Guo et al. · 0 citations
Jul 2026

Diffusion Language Model for Recommendation

Large language model (LLM)-empowered recommender systems have emerged as a promising paradigm for generative recommendation, leveraging their strong semantic reasoning and generative capacity to model complex, diverse user preferences. However, most existing approaches rely on an autoregressive paradigm that is subopti...

Chengyi Liu, Yong-Qi Zhou, Junwei Pan et al. · 0 citations
Jul 2026

Beyond Action Imitation: Learning a Decision-Aware User Simulator for Online Advertising

DASH is a decision-aware user simulator that jointly generates thinking traces and predicts behavioral actions from heterogeneous cross-domain histories and tailors a rubric-based reward model that evaluates thinking traces along form, content, and logic for RL training.

Zi-Hang Chen, Jiaer Zheng, Xiangyang Xu et al. · 0 citations

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