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Hongyu Zhang

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#machine learning Preprint Oct 2026

Mind the Gaps: From Failure Attribution to Closed-Form Repair of Code Language Models

Code language models must be maintained like the software around them: when a library evolves, a model keeps writing the interface that it saw during training. Repairing the model itself lets one correction reach all downstream uses. Existing repair methods attribute a failure to neurons, select the highest-ranked ones...

Jian Gu, Hong-Yu Zhang, Chun-Yang Chen et al. · 0 citations
Preprint Aug 2026

REFLEX: Rethinking MoE Inference as Refinement-Aware Compute Allocation in Diffusion Language Models

REFLEX is proposed, a training-free method that keeps the default router unchanged while reorganizing expert computation around the evolving refinement process, and introduces a coarse-to-fine hierarchy for expert-budget allocation that aligns computation with block-relative refinement roles while using the Frontier-Pr...

Xiang-Wen Xia, Chen Yan, Yiming Zhang et al. · 0 citations
Preprint Aug 2026

Beyond Global Routing Aggregation: Phase-Aware Expert Merging for MoE Vision-Language Models

RoleMerge, a training-free method that constructs each expert's Routing Role Profile (RRP) from phase-normalized routing statistics, capturing its relative phase preference, is proposed, and results validate phase-conditioned expert roles as a more effective basis than global routing aggregation for MoE-VLM expert merg...

Hong-Yu Zhang, Cheng Yan, Xiang-Wen Xia et al. · 1 citation

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