Yixuan Xie 「谢沂烜」

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Hi, nice to have you here!

I am Mark, a fourth-year computer science undergrad at University of Illinois Urbana-Champaign, supervised by Professor Jiawei Han. I am also collaborating with the Matsuo Iwasawa Lab.

My current research interests include:

  • augmenting LLMs with external knowledge sources;
  • turning LLMs/Agents via reinforement learning.

Email: xie39 [AT] illinois.edu

I like singing and photography, and I’m more of a cat person!

Feel free to reach out to me if you have any questions, want to discuss anything that sparks your interest, or schedule a coffee chat with me!

selected publications

* means equal contribution.

  1. WorkingPaper
    Ontology-Guided Context Selection for Retrieval-Augmented Generation
    Jiashuo Sun*, Yixuan Xie*, Jimeng Shi, and Jiawei Han
    2025
  2. WorkingPaper
    Progressive Structure Extraction:From Explicit to Implicit
    Xueqiang Xu*, Yixuan Xie*, Runchu Tian, and Jiawei Han
    2025
  3. WorkingPaper
    Efficient Reasoning, Factual Certainty: A Dynamic Interaction between Generalist and Specialist Models for Medical Reasoning
    Zequn Zhang, Yixuan Xie, Bowen Zhao, Jingyuan Feng, Junyu Liu, Wenlong Hou, Xin Jin, Zhibo Chen, Qian Niu, and Wenjun Zeng
    2025