Yixuan Xie 「谢沂烜」

Hi, this is Mark!

I am an incoming MSCS student at UIUC, privileged to be advised by Professor Jiawei Han.

My current research interests include:

Augmenting LLMs/VLMs with external knowledge sources;
Turning agents via Reinforcement Learning.

Feel free to reach me via xie39[AT]illinois.edu and for more information, please check my CV.

I am currently looking for a summer internship for 2026, in topics related to RL, multi-modal RAG, or search agents. Please feel free to reach me if you have any openings.

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

Publications

Preprint

TaSR-RAG: Taxonomy-guided Structured Reasoning for Retrieval-Augmented Generation

Jiashuo Sun^† , Yixuan Xie^†, Jimeng Shi , Shaowen Wang , and Jiawei Han

KDD’26 (Review)

TL;DR arXiv Bib

@unpublished{sun2025structured,
  title = {TaSR-RAG: Taxonomy-guided Structured Reasoning for Retrieval-Augmented Generation},
  author = {Sun, Jiashuo and Xie, Yixuan and Shi, Jimeng and Wang, Shaowen and Han, Jiawei},
  year = {2026},
  note = {KDD'26 (Review)},
  tldr = {We propose TaSR-RAG, which uses a lightweight two-level taxonomy to guide step-wise triple-based evidence selection for multi-hop RAG, outperforming strong baselines by up to 14%.}
}