Online Skill Learning for Web Agents via State-Grounded Dynamic Retrieval
Jiaxi Li, Ke Deng, Yun Wang, Jingyuan Huang, Yucheng Shi, Qiaoyu Tan, Jin Lu$\dagger$, Ninghao Liu$\dagger$
Preprint. [pdf] [code]

MITS: Enhanced Tree Search Reasoning for LLMs via Pointwise Mutual Information
Jiaxi Li, Yucheng Shi, Xiao Huang, Jin Lu$\dagger$, Ninghao Liu$\dagger$
PAKDD 2026 (Oral). [pdf] [code]

Mitigating Hallucination Through Theory-Consistent Symmetric Multimodal Preference Optimization
Wenqi Liu, Xuemeng Song$\dagger$, Jiaxi Li, Yinwei Wei, Na Zheng, Jianhua Yin, Liqiang Nie
NeurIPS 2025. [pdf] [code]

HELENE: Hessian Layer-wise Clipping and Gradient Annealing for Accelerating Fine-tuning LLM with Zeroth-order Optimization
Huaqin Zhao*, Jiaxi Li*, Yi Pan, Shizhe Liang, Xiaofeng Yang, Wei Liu, Xiang Li, Fei Dou, Tianming Liu, Jin Lu$\dagger$
EMNLP 2025 (Main). [pdf]

Automating Expert-Level Medical Reasoning Evaluation of Large Language Models
Shuang Zhou*, Wenya Xie*, Jiaxi Li*, Zaifu Zhan, Meijia Song, Han Yang, …, Meng-Han Tsai, Emma Schaffer, Yucheng Shi, Ninghao Liu, Zirui Liu, Rui Zhang$\dagger$
npj Digital Medicine 2025. [pdf] [code]

Fact or Guesswork? Evaluating Large Language Models’ Medical Knowledge with Structured One-Hop Judgments
Jiaxi Li, Yiwei Wang, Kai Zhang, Yujun Cai, Bryan Hooi, Nanyun Peng, Kai-Wei Chang, Jin Lu$\dagger$
Preprint. [pdf] [code]