Xuyuan Liu

Xuyuan Liu

Ph.D. student @ Dartmouth College

I am a Ph.D. student candidate in the Department of Computer Science at Dartmouth College, advised by Prof. Yujun Yan.

My research focuses on the science of Language Models, particularly on understanding their behavior during both training and inference through methods that probe their internal mechanisms. I aim to understand how LLMs work internally and leverage that understanding to develop technical methods that enhance their performance.

Educations

  • 2023.09 - present, Ph.D. in Computer Science, Dartmouth College.
  • 2019.09 - 2023.06, B.S. in Computer Science, Nankai University.

News

  • 2025.12: We will present our work at Unireps@NeurIPS 2025!
  • 2025.11: Check out our paper on customizing LLM memory by controlling their hidden states.
  • 2025.11: Passed my comprehensive exam!
  • 2025.06: Started my internship at NEC Laboratories America at Princeton, NJ.
  • 2025.05: One paper accepted by Findings of ACL 2025.
  • 2024.09: One paper accepted by NeurIPS 2024.

Publications

RILKE

Representation Interventions Enable Lifelong Unstructured Knowledge Control

Xuyuan Liu, Zhengzhang Chen, Xinshuai Dong, Yanchi Liu, Xujiang Zhao, Shengyu Chen, Haoyu Wang, Yujun Yan, Haifeng Chen

Preprint

Spectral

Spectral Insights into Data-Oblivious Critical Layers in Large Language Models

Xuyuan Liu, Lei Hsiung, Yaoqing Yang, Yujun Yan

Findings of ACL 2025   also in Unireps@NeurIPS 2025

Paper | Project Page

Consistency

Exploring Consistency in Graph Representations: from Graph Kernels to Graph Neural Networks

Xuyuan Liu, Yinghao Cai, Qihui Yang, Yujun Yan

NeurIPS 2024

Paper | Poster

TreeMAN

TreeMAN: Tree-enhanced Multimodal Attention Network for ICD Coding

Zichen Liu, Xuyuan Liu, Yanlong Wen, Guoqing Zhao, Fen Xia, Xiaojie Yuan

COLING 2022   (ORAL)

Paper

TreeMAN

Low-Rank Plus Sparse Matrix Transfer Learning under Growing Representations and Ambient Dimensions

Jinhang Chai, Xuyuan Liu, Elynn Chen , Yujun Yan

Preprint

Honors

  • 2023, Dartmouth Fellowship
  • 2022, Academic Excellence Scholarship, Nankai University
  • 2022, Scientific Research Innovation Scholarship, Nankai University

Services

  • Conference Reviewer: NeurIPS 2024-2025, ICLR 2025-2026, ICML 2025-2026, KDD Dataset&Benckmark 2026