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Hyunwoo J. Kim

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#artificial intelligence Preprint Sep 2026

AgentGrad: Intervention-guided Prompt Optimization for Multi Agent Systems

AgentGrad is proposed, a prompt optimization framework for multi-agent systems based on sequential intervention and semantic textual gradient abstraction that clusters semantically similar gradients to prevent mixing unrelated failure modes, and abstracts each cluster into a generalized gradient that captures the share...

Jaewon Chu, Jinwoo Seo, J. Cho et al. · 1 citation
Preprint Aug 2026

Reason in the Words You Speak: Idiolectal Paraphrasing Off-Policy Traces for Reasoning Distillation in VideoLLMs

Echo-GRPO is proposed, a framework that lets the model reason in the words it speaks, and idiolectal paraphrasing is a plug-in module that consistently improves both RL and supervised fine-tuning frameworks for reasoning distillation, demonstrating that policy-aligned supervision extends beyond GRPO.

Ji Soo Lee, Jinyoung Park, Seohyun Lee et al. · 0 citations

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