Xunjian Yin
(Xunjian is pronounced as Shwuhn-Jyen)

I am a third-year Master student at the Wangxuan Institute of Computer Technology, Peking University, supervised by Prof. Xiaojun Wan. Preivously, I received my bachelor's degree from Peking University in 2022. I worked as an intern at Microsoft. Currently, I am also a visiting student at the UCSB NLP Group, advised by Prof. William Yang Wang.

Research: I aim to make models more generalizable across real-world tasks. I have focused on evaluating and analyzing the generalization capabilities of models, exploring their knowledge boundaries, and designing methods for knowledge editing, self-alignment, and self-referential agents to improve model versatility and performance.

I believe in using methods that are simple, generalizable, and graceful.

I am seeking 2025 Fall CS Ph.D. opportunities. Feel free to contact me if you are interested in my research or want to discuss with me.

Email  /  Github  /  Linkedin  /  Twitter  /  CV  /  Google Scholar

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Preprints
New!   Gödel Agent: A Self-Referential Agent Framework for Recursive Self-Improvement
Xunjian Yin, Xinyi Wang, Liangming Pan, Xiaojun Wan, William Yang Wang
ArXiv:2410   [ Paper | Code ]
ContraSolver: Self-Alignment of Language Models by Resolving Internal Preference Contradictions
Xu Zhang*, Xunjian Yin*, Xiaojun Wan
ArXiv:2406   [ Paper | Code ]
Selected Publications   (Full publications: here)
New!   Evaluating Self-Generated Documents for Enhancing Retrieval-Augmented Generation with LLMs
Jiatao Li, Xinyu Hu, Xunjian Yin and Xiaojun Wan
NAACL findings 2025   [ Paper ]
New!   ChemAgent: Self-updating Memories in LLMs Improves Chemical Reasoning
Xiangru Tang, Tianyu Hu, Muyang Ye, Yanjun Shao, Xunjian Yin, Siru Ouyang, Wangchunshu Zhou, Pan Lu, Zhuosheng Zhang, Yilun Zhao, Arman Cohan, Mark Gerstein
ICLR 2025   [ Paper ]
DSGram: Dynamic Weighting Sub-Metrics for Grammatical Error Correction in the Era of Large Language Models
Jinxiang Xie, Yilin Li, Xunjian Yin (as Mentor), Xiaojun Wan
AAAI 2025   [ Paper | Code ]
Themis: A Reference-free NLG Evaluation Language Model with Flexibility and Interpretability
Xinyu Hu, Li Lin, Mingqi Gao, Xunjian Yin, Xiaojun Wan
EMNLP 2024   [ Paper | Code ]
Benchmarking Knowledge Boundary for Large Language Model: A Different Perspective on Model Evaluation
Xunjian Yin*, Xu Zhang*, Jie Ruan, Xiaojun Wan
ACL 2024   [ Paper | Code ]
History Matters: Temporal Knowledge Editing in Large Language Model
Xunjian Yin, Jin Jiang, Liming Yang, Xiaojun Wan
AAAI 2024   [ Paper | Code ]
Error-Robust Retrieval for Chinese Spelling Check
Xunjian Yin, Xinyu Hu, Jin Jiang, Xiaojun Wan
COLING 2024   [ Paper | Code ]
ALCUNA: Large Language Models Meet New Knowledge
Xunjian Yin*, Baizhou Huang*, Xiaojun Wan
EMNLP 2023   [ Paper | Code ]
Exploring Context-Aware Evaluation Metrics for Machine Translation
Xinyu Hu, Xunjian Yin, Xiaojun Wan
EMNLP 2023 Findings   [ Paper | Code ]
How Do Seq2Seq Models Perform on End-to-End Data-to-Text Generation?
Xunjian Yin, Xiaojun Wan
ACL 2022   [ Paper | Code ]
Research Experience
  • June 2024 - Now,   University of California, Santa Barbara (NLP Group)
    Mentor: Prof. William Wang. One paper about Self-Referential Agent Framework; Ongoing work on reverse language model pre-training.

  • Feb. 2022 - Aug. 2022,   Microsoft Research Asia (NLC Group)
    Mentor: Dr. Shuming Ma. Pre-training with Curriculum Learning

  • Oct. 2020 - June 2022,   Wangxuan Institute of Computer Technology, Peking University
    Mentor: Prof. Xiaojun Wan. One paper at ACL 2022 on data-to-text generation

  • Apr. 2020 - Nov. 2021,   Institute of Computational Linguistics, Peking University
    Mentor: Prof. Yunfang Wu. Multi-Task Learning for Grammar Error Correction

  • July 2019 - Dec. 2019,   Institute of Computational Linguistics, Peking University
    Mentor: Prof. Sujian Li. Building Benchmark for Mathematical Olympiad Problems

Academic Services
  • Reviewer: ACL 2023, EMNLP 2023, ICLR 2024, Coling 2024, ACL 2024, NeurIPS 2024, EMNLP 2024, ICLR 2024, ICLR 2025, ICML 2025

  • Volunteer: NLPCC 2023 Shared Task 8 track chair, AAAI 2024 volunteer, ACL 2024 volunteer

Teaching
  • Teaching Assistant, PKU CS, Web Data Mining, Fall 2023, with Prof. Xiaojun Wan

  • Teaching Assistant, PKU CS, Introduction to Computing, Fall 2023, with Prof. Xifeng Deng

  • Teaching Assistant, PKU CS, Data Structures and Algorithms, Spring 2022, with Prof. Zhao Wang

  • Teaching Assistant, PKU CS, Introduction to Computing, Fall 2021, with Prof. Yibo Lin

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Honors and Awards
  • Merit Student, PKU, Sep. 2024

  • Guotai Junan Scholarship, PKU, Sep. 2024

  • Wang Xuan Scholarship, PKU, Sep. 2022

  • Award for Research Excellence, PKU, Sep. 2023, 2022, 2021

  • Award for Academic Excellence, PKU, Sep. 2020, 2019

  • Outstanding Student, Shandong Province, Apr. 2018



Thanks Jon Barron and Xueqing Wu for this amazing work.