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Gyuseok Lee

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#artificial intelligence Preprint Sep 2026

SIPO: Unifying Reinforcement Learning with On-Policy Self-Distillation

This work proposes self-instructing policy optimization (SIPO) with a contrastive self-teacher to provide dense credit, and demonstrates that SIPO outperforms both RLVR and OPSD baselines without an external teacher or additional generation.

Zhenrui Yue, Hui-Min Zeng, Yue-Qi Wang et al. · 0 citations
Book Jul 2026

Topology-Aware Tokenization for Generative Recommendation

Topology-Aware Tokenization (TopoTok) is proposed, an item tokenization framework that preserves item relational structure throughout the quantization hierarchy and effectively alleviates topology distortion and consistently outperforms state-of-the-art tokenizers.

Yao-Kun Liu, Yi-Fan Liu, Zhenrui Yue et al. · 0 citations
Preprint Aug 2026

SCoRD: Semantic-Assisted Continual Retriever-Reranker Distillation for LLM-Based Recommendation

Experiments on real-world datasets show that SCoRD enables effective and efficient retriever-reranker co-adaptation and introduces a semantic reasoning assistant that distills the LLM's ability to infer underlying user intents into reusable intent-level guidance.

S. Baek, Gyuseok Lee, Seunghan Lee et al. · 0 citations

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