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Xidong Wu

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#machine learning Preprint Oct 2026

Reasoning Reranking with Semantic IDs as the Sole Item Representation

Reasoning rerankers write a rationale before ranking a candidate slate, and existing systems read item metadata to do so, even though generative recommenders increasingly represent items as compact Semantic IDs (SIDs). Ranking from SIDs alone has two appeals: SID prompts are far shorter than the matched item text, and...

Zhenwei Tang, Jin-Tao Liu, Di Bai et al. · 0 citations
#natural language process... Preprint Sep 2026

Dream-RSI: Recursive Self-Improvement through Evolving Worlds

A lightweight orchestration layer makes exploration explicit and programmable while leaving the underlying base agent unchanged, and a key insight is that accumulated discovery history can act as a replay simulator over the realized search space.

Tong Zheng, Xidong Wu, Zheng Zhang et al. · 13 citations
#natural language process... Preprint Aug 2026

MoEGen: Mixture-of-Experts for Instance-Adaptive LoRA Generation

This work proposes MoEGen, an adaptation framework that shifts MoE-based PEFT from expert selection to expert-conditioned parameter generation, and decouples expert capacity from adapter storage while enabling instance-conditioned adaptation.

Yiming Zeng, Lei Lu, Zexin Li et al. · 1 citation · ⚡1

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