Kai Liu

Zhejiang University

Hangzhou, 38 Zheda Road.

Email: kail@zju.edu.cn

I am a Ph.D. student at the College of Biomedical Engineering and Instrument Science, Zhejiang University, under the supervision of Prof. Fan Zhou and Prof. Yaowu Chen from 2020 to present. I used to serve as a research intern at Apsara Lab, Alibaba Cloud from May, 2022 to Sept, 2024. Now, I am visiting NExT++ research center at National University of Singapore as a joint Ph.D. student (supported by the CSC program), under the supervision of Prof. Tat-Seng Chua and Dr. Hao Fei.

My research interests lie in uncertainty estimation, open-world learning, middle-level image analysis (recognition, detection, tracking, etc.), vision-language applications, and large language models. I’m seeking a job opportunity in the 2025 job market. If you are interested to chat with me, feel free to drop me an email.

Listed below are the accepted papers in top conferences and journals where I worked as the first author. Here are the full lists of publications and the repositories will come soon. I look forward to continuing to make valuable contributions to computer vision as well as natural language processing.

news

Oct 31, 2024	Two papers are accepted by NeurIPS’24! Code are released!
Jul 28, 2024	A number of ArXiv papers are released! Code will come soon!
Feb 1, 2024	Recipient of Alibaba Cloud’s Outstanding Research Intern Award (top-5%)!
Jan 15, 2024	One paper is accpted by ICLR’24!
Dec 14, 2023	Two papers are accpted by NeurIPS’23!

selected publications

Enhancing LLM’s Cognition via Structurization

Kai Liu, Zhihang Fu, Chao Chen, Wei Zhang, Rongxin Jiang, Fan Zhou, Yaowu Chen, Yue Wu, and Jieping Ye

In Conference on Neural Information Processing Systems, Nov 2024

Bib PDF Code

@inproceedings{liu2024enhancing,
  title = {Enhancing LLM's Cognition via Structurization},
  author = {Liu, Kai and Fu, Zhihang and Chen, Chao and Zhang, Wei and Jiang, Rongxin and Zhou, Fan and Chen, Yaowu and Wu, Yue and Ye, Jieping},
  booktitle = {Conference on Neural Information Processing Systems},
  month = nov,
  year = {2024},
}

Rethinking Out-of-Distribution Detection on Imbalanced Data Distribution

Kai Liu, Zhihang Fu, Sheng Jin, Chao Chen, Ze Chen, Rongxin Jiang, Fan Zhou, Yaowu Chen, and Jieping Ye

In Conference on Neural Information Processing Systems, Nov 2024

Bib PDF Code

@inproceedings{liu2024rethinking,
  title = {Rethinking Out-of-Distribution Detection on Imbalanced Data Distribution},
  author = {Liu, Kai and Fu, Zhihang and Jin, Sheng and Chen, Chao and Chen, Ze and Jiang, Rongxin and Zhou, Fan and Chen, Yaowu and Ye, Jieping},
  booktitle = {Conference on Neural Information Processing Systems},
  month = nov,
  year = {2024},
}

INSIDE: LLMs’ Internal States Retain the Power of Hallucination Detection

Chao Chen, Kai Liu, Ze Chen, Yi Gu, Mingyuan Tao, Zhihang Fu, and Jieping Ye

In International Conference on Learning Representations, May 2024

Bib PDF Code

@inproceedings{chen2024inside,
  title = {INSIDE: LLMs' Internal States Retain the Power of Hallucination Detection},
  author = {Chen, Chao and Liu, Kai and Chen, Ze and Gu, Yi and Tao, Mingyuan and Fu, Zhihang and Ye, Jieping},
  booktitle = {International Conference on Learning Representations},
  month = may,
  year = {2024},
}

Category-Extensible Out-of-Distribution Detection via Hierarchical Context Descriptions

Kai Liu, Zhihang Fu, Chao Chen, Sheng Jin, Ze Chen, Mingyuan Tao, Rongxin Jiang, and Jieping Ye

In Conference on Neural Information Processing Systems, Nov 2023

Bib PDF

@inproceedings{liu2023category,
  title = {Category-Extensible Out-of-Distribution Detection via Hierarchical Context Descriptions},
  author = {Liu, Kai and Fu, Zhihang and Chen, Chao and Jin, Sheng and Chen, Ze and Tao, Mingyuan and Jiang, Rongxin and Ye, Jieping},
  booktitle = {Conference on Neural Information Processing Systems},
  month = nov,
  year = {2023},
}

Uncertainty-aware Unsupervised Multi-Object Tracking

Kai Liu, Sheng Jin, Zhihang Fu, Ze Chen, Rongxin Jiang, and Jieping Ye

In International Conference of Computer Vision, Oct 2023

Bib PDF Code

@inproceedings{liu2023u2mot,
  title = {Uncertainty-aware Unsupervised Multi-Object Tracking},
  author = {Liu, Kai and Jin, Sheng and Fu, Zhihang and Chen, Ze and Jiang, Rongxin and Ye, Jieping},
  booktitle = {International Conference of Computer Vision},
  month = oct,
  year = {2023},
  pages = {9996-10005},
}