少即是多:最小测试时干预(MTI)精准提升LLM推理 -- 免训练+9%

Less is More: Improving LLM Reasoning with Minimal Test-Time Intervention ArXiv ID: 2510.13940作者: Zhen Yang, Mingyang Zhang, Feng Chen, Ganggui Ding, Liang Hou, Xin Tao, Ying-Cong Chen发布日期: 2025-10-15 (修订: 2026-01-11)内容级别: Deep Dive 摘要本文揭示了LLM推理中一个被忽视但关键的现象:推理不确定性高度局部化。仅一小部分高熵token对输出正确性产生决定性影响。基于这一发现,提出最小测试时干预(Minimal Test-Time Intervention, MTI),一个完全免训练的框架。MTI仅在不确定位置应用分类器无关引导(CFG),通过轻量级负向提示引...

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