Yijun Liu

Yijun Liu

Harbin Institute of Technology

Hello🤗, I am a 2nd-year Direct PhD student in Research Center for Social Computing and Interactive Robotics (SCIR), at Harbin Institute of Technology (HIT, China), supervised by Professor Wanxiang Che. My main research interests are efficient inference in large language models and optimization of long context. Recently, my research interests have shifted primarily to agent memory. If you are interested in my research or potential collaborations, please feel free to contact me at ✉️yijunliu@ir.hit.edu.cn.

If you like the template of this homepage, welcome to star and fork Yi Ren’s open-sourced template version AcadHomepage.

🔥 News

📝 Publications

AAAI 2026
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Judge Q: Trainable Queries for Optimized Information Retention in KV Cache Eviction

Yijun Liu, Yixuan Wang, Yuzhuang Xu, Shiyu Ji, Yang Xu, Qingfu Zhu, Wanxiang Che

arXiv 2025
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A Survey on Transformer Context Extension: Approaches and Evaluation

Yijun Liu, Jinzheng Yu, Yang Xu, Zhongyang Li, Qingfu Zhu

🧑🏻‍💻 Collaborative Papers

🚄 Efficient LLMs

Lookahead Q-Cache: Achieving More Consistent KV Cache Eviction via Pseudo Query, Yixuan Wang*, Shiyu Ji*, Yijun Liu, Yuzhuang Xu, Yang Xu, Qingfu Zhu, Wanxiang Che. [EMNLP 2025] [Code]

Seer Self-Consistency: Advance Budget Estimation for Adaptive Test-Time Scaling, Shiyu Ji*, Yixuan Wang*, Yijun Liu, Qingfu Zhu, Wanxiang Che. [ACL 2026 findings] [Code]

CAMERA: Multi-Matrix Joint Compression for MoE Models via Micro-Expert Redundancy Analysis, Yuzhuang Xu, Xu Han, Yuanchi Zhang, Yixuan Wang, Yijun Liu, Shiyu Ji, Qingfu Zhu, Wanxiang Che. [AAAI 2026] [Code]

Make Some Noise: Unlocking Language Model Parallel Inference Capability through Noisy Training, Yixuan Wang, Xianzhen Luo, Fuxuan Wei, Yijun Liu, Qingfu Zhu, Xuanyu Zhang, Qing Yang, Dongliang Xu, Wanxiang Che. [EMNLP 2024]

EchoKV: Efficient KV Cache Compression via Similarity-Based Reconstruction, Shiyu Ji*, Yixuan Wang*, Yijun Liu, Qingfu Zhu, Wanxiang Che. [EMNLP 2025] [Code]

Think Before You Accept: Semantic Reflective Verification for Faster Speculative Decoding, Yixuan Wang, Yijun Liu, Shiyu ji, Yuzhuang Xu, Yang Xu, Qingfu Zhu, Wanxiang Che.

🌎 Multimodal Understanding

CVLUE: A New Benchmark Dataset for Chinese Vision-Language Understanding Evaluation, Yuxuan Wang, Yijun Liu, Fei Yu, Chen Huang, Kexin Li, Zhiguo Wan, Wanxiang Che, Hongyang Chen. [AAAI 2025] [Code]

✍🏻 Grammatical Error Correction(GEC)

Improving Grammatical Error Correction via Contextual Data Augmentation, Yixuan Wang, Baoxin Wang, Yijun Liu, Qingfu Zhu, Dayong Wu, Wanxiang Che. [ACL 2024 findings]

LM-Combiner: A Contextual Rewriting Model for Chinese Grammatical Error Correction, Yixuan Wang, Baoxin Wang, Yijun Liu, Dayong Wu, Wanxiang Che. [LREC-COLING 2024]

🎖 Honors and Awards

  • 2022.11 National First Prize in China Undergraduate Mathematical Contest in Modelling (CUMCM).
  • 2022.05 Meritorious Winner in Mathematical Contest in Modeling (MCM).
  • 2021.12 Provincial Second Prize in Mathematics competition of Chinese (CMC).
  • 2023.08 First place in Chinese Essay Fluency Evaluation in the CCL 2023 evaluation competition.
  • 2024.08 Task Contact of Chinese Vision-Language Understanding Evaluation(CVLUE) in the CCL 2024 evaluation competition.
  • 2024.06 Outstanding Graduates Awards of Heilongjiang Province.
  • 2023.12 Merit Student of Heilongjiang Province.
  • 2021.05 Excellent Student Cadre of Harbin Institute of Technology.
  • 2022.05 Excellent League Member of Harbin Institute of Technology.
  • 2023.05 Excellent League Cadre of Harbin Institute of Technology.
  • 2026.05 Excellent League Member of Harbin Institute of Technology.
  • 2021, 2022, 2023 First-class People’s Scholarship.

📖 Educations

  • 2024.09 - Now, Direct Phd Student, Harbin Institute of Technology, Harbin.
  • 2020.09 - 2024.06, Undergraduate, Harbin Institute of Technology, Harbin.

💻 Internships

  • 2025.01 - 2025.03, HUAWEI, Business Group, Dongguan