avatar

Yujun Cai

Lecturer (Assistant Professor)
The University of Queensland
vanora.caiyj@gmail.com / yujun.cai@uq.edu.au


About Me

I’m currently a Lecturer (Assistant Professor) at the School of Electrical Engineering and Computer Science, the University of Queensland (UQ) since Nov. 2024.

Recruiting Ph.D. students and research interns. I’m actively looking for strong and motivated students. If you are interested in working with me, please feel free drop me an email.

I was a Research Scientist in Meta Inc.. I received my Ph.D. in Computer Science from Nanyang Technological University, where I was fortunate to be advised by Prof. Tat Jen Cham, Prof. Jianfei Cai, Prof. Junsong Yuan and Prof. Nadia Magnenat Thalmann. Prior to this, I obtained my Bachelor degree from Southeast University.

My research interests include multi-modal human perception, vision-language understanding, natural language processing.

Selected Publications [Google Scholar][DBLP]

    2025

  1. Exploring Visual Vulnerabilities via Multi-Loss Adversarial Search for Jailbreaking Vision-Language Models
    Shuyang Hao, Bryan Hooi, Jun Liu, Kai-Wei Chang, Zi Huang, Yujun Cai.
    Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2025.
    PDF Code
  2. LatentHOI: On the Generalizable Hand Object Motion Generation with Latent Hand Diffusion
    Muchen Li, Sammy Christen, Chengde Wan, Yujun Cai, Renjie Liao, Leonid Sigal, Shugao Ma.
    Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2025.
    PDF Code
  3. Tricking Retrievers with Influential Tokens: An Efficient Black-Box Corpus Poisoning Attack
    Cheng Wang, Yiwei Wang, Yujun Cai, Bryan Hooi.
    Proceedings of the 2025 Conference of the North American Chapter of the Association for Computational Linguistics (NAACL), 2025.
    PDF Code
  4. Con-ReCall: Detecting Pre-training Data in LLMs via Contrastive Decoding
    Cheng Wang, Yiwei Wang, Bryan Hooi, Yujun Cai, Nanyun Peng, Kai-Wei Chang.
    International Conference on Computational Linguistics (COLING), 2025.
    PDF Code
  5. Fact or Guesswork? Evaluating Large Language Model' s Medical Knowledge with Structured One-Hop Judgment
    Jiaxi Li, Yiwei Wang, Kai Zhang, Yujun Cai, Bryan Hooi, Nanyun Peng, Kai-Wei Chang, Jin Lu.
    arXiv preprint arXiv:2502.14275, 2025.
    PDF Code
  6. Enhancing LLM Character-Level Manipulation via Divide and Conquer
    Zhen Xiong, Yujun Cai, Bryan Hooi, Nanyun Peng, Kai-Wei Chang, Zhecheng Li, Yiwei Wang.
    arXiv preprint arXiv:2502.08180, 2025.
    PDF Code
  7. Lost in Edits? A \lambda -Compass for AIGC Provenance
    Wenhao You, Bryan Hooi, Yiwei Wang, Euijin Choo, Ming-Hsuan Yang, Junsong Yuan, Zi Huang, Yujun Cai.
    arXiv preprint arXiv:2502.04364, 2025.
    PDF Code

    8. 2024

  8. Energy-Calibrated VAE with Test Time Free Lunch
    Yihong Luo, Siya Qiu, Xingjian Tao, Yujun Cai, Jing Tang.
    European Conference on Computer Vision (ECCV), 2024.
    PDF Code
  9. CVPR
    Llms are good action recognizers
    Haoxuan Qu, Yujun Cai, Jun Liu.
    Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2024.
    PDF Code
  10. 6d-diff: A keypoint diffusion framework for 6d object pose estimation
    Li Xu, Haoxuan Qu, Yujun Cai, Jun Liu.
    Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2024.
    PDF Code
  11. NeurIPS
    DisC-GS: Discontinuity-aware Gaussian Splatting
    Haoxuan Qu, Zhuoling Li, Hossein Rahmani, Yujun Cai, Jun Liu.
    Advances in Neural Information Processing Systems (NeurIPS), 2024.
    PDF Code
  12. emg2pose: A Large and Diverse Benchmark for Surface Electromyographic Hand Pose Estimation
    Sasha Salter, Richard Warren, Collin Schlager, Adrian Spurr, Shangchen Han, Rohin Bhasin, Yujun Cai, Peter Walkington, Anuoluwapo Bolarinwa, Robert Wang, others.
    Advances in Neural Information Processing Systems Dataset and Benmark Track (NeurIPS), 2024.
    PDF Code
  13. STMG: A Machine Learning Microgesture Recognition System for Supporting Thumb-Based VR/AR Input
    Kenrick Kin, Chengde Wan, Ken Koh, Andrei Marin, Necati Cihan Camgoz, Yubo Zhang, Yujun Cai, Fedor Kovalev, Moshe Ben-Zacharia, Shannon Hoople, others.
    Proceedings of the CHI Conference on Human Factors in Computing Systems (CHI), 2024.
    PDF Code
  14. DRS: Deep Question Reformulation With Structured Output
    Zhecheng Li, Yiwei Wang, Bryan Hooi, Yujun Cai, Nanyun Peng, Kai-Wei Chang.
    arXiv preprint arXiv:2411.17993, 2024.
    PDF Code
  15. GradiSeg: Gradient-Guided Gaussian Segmentation with Enhanced 3D Boundary Precision
    Zehao Li, Wenwei Han, Yujun Cai, Hao Jiang, Baolong Bi, Shuqin Gao, Honglong Zhao, Zhaoqi Wang.
    arXiv preprint arXiv:2412.00392, 2024.
    PDF Code
  16. Think Carefully and Check Again! Meta-Generation Unlocking LLMs for Low-Resource Cross-Lingual Summarization
    Zhecheng Li, Yiwei Wang, Bryan Hooi, Yujun Cai, Naifan Cheung, Nanyun Peng, Kai-wei Chang.
    arXiv preprint arXiv:2410.20021, 2024.
    PDF Code
  17. Vulnerability of LLMs to Vertically Aligned Text Manipulations
    Zhecheng Li, Yiwei Wang, Bryan Hooi, Yujun Cai, Zhen Xiong, Nanyun Peng, Kai-wei Chang.
    arXiv preprint arXiv:2410.20016, 2024.
    PDF Code
  18. Off-the-shelf ChatGPT is a Good Few-shot Human Motion Predictor
    Haoxuan Qu, Zhaoyang He, Zeyu Hu, Yujun Cai, Jun Liu.
    arXiv preprint arXiv:2405.15267, 2024.
    PDF Code
  19. Are LLMs Really Not Knowledgable? Mining the Submerged Knowledge in LLMs' Memory
    Xingjian Tao, Yiwei Wang, Yujun Cai, Zhicheng Yang, Jing Tang.
    arXiv preprint arXiv:2412.20846, 2024.
    PDF Code

    20. 2023

  20. A Characteristic Function-Based Method for Bottom-Up Human Pose Estimation
    Haoxuan Qu, Yujun Cai, Lin Geng Foo, Ajay Kumar, Jun Liu.
    Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition, 2023.
    PDF Code
  21. Social diffusion: Long-term multiple human motion anticipation
    Julian Tanke, Linguang Zhang, Amy Zhao, Chengcheng Tang, Yujun Cai, Lezi Wang, Po-Chen Wu, Juergen Gall, Cem Keskin.
    Proceedings of the IEEE/CVF International Conference on Computer Vision (CVPR), 2023.
    PDF Code
  22. Primacy effect of chatgpt
    Yiwei Wang, Yujun Cai, Muhao Chen, Yuxuan Liang, Bryan Hooi.
    Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing (EMNLP), 2023.
    PDF Code
  23. How Fragile is Relation Extraction under Entity Replacements?
    Yiwei Wang, Bryan Hooi, Fei Wang, Yujun Cai, Yuxuan Liang, Wenxuan Zhou, Jing Tang, Manjuan Duan, Muhao Chen.
    CONLL, 2023.
    PDF Code

    24. 2022

  24. Geometry-guided progressive nerf for generalizable and efficient neural human rendering
    Mingfei Chen, Jianfeng Zhang, Xiangyu Xu, Lijuan Liu, Yujun Cai, Jiashi Feng, Shuicheng Yan.
    European Conference on Computer Vision, 2022.
    PDF Code
  25. Graphcache: Message passing as caching for sentence-level relation extraction
    Yiwei Wang, Muhao Chen, Wenxuan Zhou, Yujun Cai, Yuxuan Liang, Bryan Hooi.
    Proceedings of the 2022 Conference of the North American Chapter of the Association for Computational Linguistics (NAACL), 2022.
    PDF Code
  26. Should we rely on entity mentions for relation extraction? debiasing relation extraction with counterfactual analysis
    Yiwei Wang, Muhao Chen, Wenxuan Zhou, Yujun Cai, Yuxuan Liang, Dayiheng Liu, Baosong Yang, Juncheng Liu, Bryan Hooi.
    Proceedings of the 2022 Conference of the North American Chapter of the Association for Computational Linguistics (NAACL), 2022.
    PDF Code
  27. Heatmap distribution matching for human pose estimation
    Haoxuan Qu, Li Xu, Yujun Cai, Lin Geng Foo, Jun Liu.
    Advances in Neural Information Processing Systems, 2022.
    PDF Code
  28. MonaGO: a novel gene ontology enrichment analysis visualisation system
    Ziyin Xin, Yujun Cai, Louis T Dang, Hannah MS Burke, Jerico Revote, Natalie Charitakis, Denis Bienroth, Hieu T Nim, Yuan-Fang Li, Mirana Ramialison.
    BMC bioinformatics, 2022.
    PDF Code
  29. Deepemd: Differentiable earth mover' s distance for few-shot learning
    Chi Zhang, Yujun Cai, Guosheng Lin, Chunhua Shen.
    IEEE Transactions on Pattern Analysis and Machine Intelligence, 2022.
    PDF Code
  30. UmeTrack: Unified multi-view end-to-end hand tracking for VR
    Shangchen Han, Po-chen Wu, Yubo Zhang, Beibei Liu, Linguang Zhang, Zheng Wang, Weiguang Si, Peizhao Zhang, Yujun Cai, Tomas Hodan, others.
    SIGGRAPH Asia 2022 conference papers, 2022.
    PDF Code
  31. Time-Aware Neighbor Sampling on Temporal Graphs
    Yiwei Wang, Yujun Cai, Yuxuan Liang, Henghui Ding, Changhu Wang, Bryan Hooi.
    2022 International Joint Conference on Neural Networks (IJCNN), 2022.
    PDF Code

    32. 2021

  32. A unified 3d human motion synthesis model via conditional variational auto-encoder
    Yujun Cai, Yiwei Wang, Yiheng Zhu, Tat-Jen Cham, Jianfei Cai, Junsong Yuan, Jun Liu, Chuanxia Zheng, Sijie Yan, Henghui Ding, others.
    Proceedings of the IEEE/CVF International Conference on Computer Vision (CVPR), 2021.
    PDF Code
  33. Adaptive data augmentation on temporal graphs
    Yiwei Wang, Yujun Cai, Yuxuan Liang, Henghui Ding, Changhu Wang, Siddharth Bhatia, Bryan Hooi.
    Advances in Neural Information Processing Systems, 2021.
    PDF Code
  34. Direct multi-view multi-person 3d pose estimation
    Jianfeng Zhang, Yujun Cai, Shuicheng Yan, Jiashi Feng, others.
    Advances in Neural Information Processing Systems, 2021.
    PDF Code
  35. Structure-aware label smoothing for graph neural networks
    Yiwei Wang, Yujun Cai, Yuxuan Liang, Wei Wang, Henghui Ding, Muhao Chen, Jing Tang, Bryan Hooi.
    arXiv preprint arXiv:2112.00499, 2021.
    PDF Code
  36. Time-aware neighbor sampling for temporal graph networks
    Yiwei Wang, Yujun Cai, Yuxuan Liang, Henghui Ding, Changhu Wang, Bryan Hooi.
    The 2022 International Joint Conference on Neural Networks (IJCNN), 2021.
    PDF Code
  37. Curgraph: Curriculum learning for graph classification
    Yiwei Wang, Wei Wang, Yuxuan Liang, Yujun Cai, Bryan Hooi.
    Proceedings of the Web Conference 2021, 2021.
    PDF Code
  38. Mixup for node and graph classification
    Yiwei Wang, Wei Wang, Yuxuan Liang, Yujun Cai, Bryan Hooi.
    Proceedings of the Web Conference 2021, 2021.
    PDF Code
  39. Progressive supervision for node classification
    Yiwei Wang, Wei Wang, Yuxuan Liang, Yujun Cai, Bryan Hooi.
    Machine Learning and Knowledge Discovery in Databases: European Conference, ECML PKDD 2020, Ghent, Belgium, September 14--18, 2020, Proceedings, Part I, 2021.
    PDF Code

    40. 2020

  40. Learning progressive joint propagation for human motion prediction
    Yujun Cai, Lin Huang, Yiwei Wang, Tat-Jen Cham, Jianfei Cai, Junsong Yuan, Jun Liu, Xu Yang, Yiheng Zhu, Xiaohui Shen, others.
    Computer Vision--ECCV 2020: 16th European Conference, Glasgow, UK, August 23--28, 2020, Proceedings, Part VII 16, 2020.
    PDF Code
  41. 3D hand pose estimation using synthetic data and weakly labeled RGB images
    Yujun Cai, Liuhao Ge, Jianfei Cai, Nadia Magnenat Thalmann, Junsong Yuan.
    IEEE transactions on pattern analysis and machine intelligence, 2020.
    PDF Code
  42. Graphcrop: Subgraph cropping for graph classification
    Yiwei Wang, Wei Wang, Yuxuan Liang, Yujun Cai, Bryan Hooi.
    arXiv preprint arXiv:2009.10564, 2020.
    PDF Code
  43. Detecting implementation bugs in graph convolutional network based node classifiers
    Yiwei Wang, Wei Wang, Yujun Ca, Bryan Hooi, Beng Chin Ooi.
    2020 IEEE 31st International Symposium on Software Reliability Engineering (ISSRE), 2020.
    PDF Code
  44. Nodeaug: Semi-supervised node classification with data augmentation
    Yiwei Wang, Wei Wang, Yuxuan Liang, Yujun Cai, Juncheng Liu, Bryan Hooi.
    Proceedings of the 26th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, 2020.
    PDF Code
  45. Deepemd: Few-shot image classification with differentiable earth mover' s distance and structured classifiers
    Chi Zhang, Yujun Cai, Guosheng Lin, Chunhua Shen.
    Proceedings of the IEEE/CVF conference on computer vision and pattern recognition (CVPR), 2020.
    PDF Code

    46. 2019

  46. Exploiting spatial-temporal relationships for 3d pose estimation via graph convolutional networks
    Yujun Cai, Liuhao Ge, Jun Liu, Jianfei Cai, Tat-Jen Cham, Junsong Yuan, Nadia Magnenat Thalmann.
    Proceedings of the IEEE/CVF International Conference on Computer Vision (CVPR), 2019.
    PDF Code

    47. 2018

  47. Weakly-supervised 3d hand pose estimation from monocular rgb images
    Yujun Cai, Liuhao Ge, Jianfei Cai, Junsong Yuan.
    Proceedings of the European conference on computer vision (ECCV), 2018.
    PDF Code
  48. Hand pointnet: 3d hand pose estimation using point sets
    Liuhao Ge, Yujun Cai, Junwu Weng, Junsong Yuan.
    Proceedings of the IEEE conference on computer vision and pattern recognition (CVPR), 2018.
    PDF Code

Teaching

Services

Conference Reviewers

Journal Reviewers

Contact

Address: 78 Staff House Rd, St Lucia QLD 4067, Australia


Last Update: