Author

Tian-Yi Lin

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#artificial intelligence Preprint Sep 2026

SkillRubric: Co-Evolving Actor Guidance and Evaluator Rubrics for Multimodal Agents

Recent work incorporates reusable skills distilled from past interactions into multimodal agent training, providing procedural guidance for long-horizon planning and tool use. However, policy optimization in these methods remains driven primarily by sparse outcome rewards, providing little supervision for intermediate...

Bing Jiang, Guo-Xi Zhang, Jasper Wang et al. · 0 citations

#artificial intelligence Preprint Sep 2026

A Zeroth-Order Paradigm for LLM Preference Alignment

Direct preference alignment methods are widely used to align large language models (LLMs) with human preferences because of their computational and memory efficiency. However, likelihood displacement motivates alternative ways to extract information from preference pairs with small likelihood margins. In this paper, we...

Peter Chen, Xi Chen, Wo-Tao Yin et al. · 0 citations