Author

Chunxiao Li

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Preprint Sep 2026

Recommender System as Slow and Fast Thinkers

Experiments on five real-world datasets show that \textsc{DS-Frame} consistently improves representative sequential recommendation backbones, with larger gains on challenging groups and effective accuracy--efficiency trade-offs, highlighting the potential of adaptive inference for more efficient and robust recommendati...

Zichen Yuan, Xiao-Xuan Dong, Linkun Dai et al. · 0 citations

Preprint Aug 2026

Risk-Aware Reranking for Agentic Tool Retrieval

Tool retrieval determines which external tools are exposed to an LLM agent for a user query or task, making retrieval a critical pre-execution safety boundary. Unlike document retrieval, tool retrieval exposes executable actions: a tool that is useful for one task may be unnecessary or risky for another. However, exist...

Qinfei Li, Xiaoxuan Dong, Jin Zhang et al. · 0 citations