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Author

Tong Chen

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Jul 2026

VaLiDRec: Variable-Length LLM-Aligned Semantic IDs for Generative Recommendation

VaLiDRec, a generative recommendation framework based on variable-length, LLM-aligned semantic identifiers, demonstrates that LLM-native variable-length semantic identifiers provide a more expressive and efficient paradigm for generative recommendation.

Shutong Qiao, Wei Yuan, Tong Chen et al. · 0 citations
Jul 2026

ODYSSE: Episode-wise Policy Optimization for Personalized Agentic Reasoning

ODYSSE is presented, a Reinforced Fine-Tuning (RFT) framework for personalized agentic reasoning designed to address long action horizons and strong cross-step dependencies in personalized agentic reasoning, and an episodic batch sampler that groups actions from the same episode into unified training batches, facilitat...

Jiaqi Zhang, Tong Chen, Junliang Yu et al. · 0 citations
Preprint Aug 2026

Empowering Compact LLMs with Fusion of Layer-wise Exits for Recommendation

The Fusion of Layer-wise Exits for Sequential Recommendation (FLEXRec), a discriminative framework that enhances compact LLMs while retaining scalable full-corpus ranking and achieves state-of-the-art accuracy among competing methods while remaining highly efficient.

Xurong Liang, Tong Chen, Q. Nguyen et al. · 0 citations

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