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Yige Yuan

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#machine learning Preprint Oct 2026

Collaborative Personalized Preference Alignment for LLMs under Data Deficiency

Real-world users often exhibit highly heterogeneous preferences over multiple objectives for LLM responses. A lightweight aligner can tailor these responses to individual preferences, but scarce user-specific feedback makes personalized training difficult. Learning shared initializations across users can support few-sh...

Li-Yan Yang, Yi-Ge Yuan, Zhiqin Yang · 0 citations
Jul 2026

Rethinking the Evaluation of Harness Evolution for Agents

An extensive evaluation of automatic harness evolution for LLM agents is conducted, comparing harness evolution with simple test-time scaling and discovery baselines under comparable feedback and inference budgets, and also evaluating evolved harnesses on held-out tasks to assess whether the discovered improvements gen...

Yike Wang, Huaisheng Zhu, Zhengyu Hu et al. · 18 citations
Jul 2026

Co-Harness: Co-Evolving Harnesses and Model Weights for LLM Agents

Co-Harness is introduced, a framework that jointly optimizes the agent harness and model parameters during post-training and suggests that joint harness and model optimization is an effective way to improve agents beyond fixed-harness post-training.

Zhengyu Chen, Teng Xiao, Huaisheng Zhu et al. · 4 citations

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