About Me
I am a third-year Ph.D. student in Computer Science at the
Australian Institute for Machine Learning (AIML),
Adelaide University (formerly The University of Adelaide),
advised by Prof.
Javen Qinfeng Shi.
Before my Ph.D., I received my M.Sc. and B.Eng. degrees from Wuhan University of Technology.
I study how language supervision shapes the semantics, geometry, and identifiability of multimodal representations. My long-term goal is to develop principled foundations for language-guided representation learning, with the aim of building multimodal systems that acquire structured, interpretable, and reliable representations of the world.
Research Interests
- Representation learning: learning objectives and training paradigms; identifiability theory; semantic structure in learned representations.
- Vision-language modeling: multimodal alignment; multimodal large language models; supervision design and data curation for multimodal learning.
- Explainable machine learning: mechanistic interpretability; representation geometry; latent-structure characterization.
Experience
-
Sep 2023 - Present
PhD Student Researcher, AIML, Adelaide University
-
Jun 2020 - Aug 2022
AI Engineer, Tellhow Software
-
Jul 2019 - Apr 2020
Software Engineer, Huawei Technologies
-
May 2018 - Oct 2018
Visiting Student Researcher, California PATH, UC Berkeley
Selected Publications
ICML
Yichao Cai; Zhen Zhang; Yuhang Liu;
Javen Q. Shi.
International Conference on Machine Learning (ICML), 2026
A theoretical study of representation geometry in unimodal and multimodal contrastive learning, revealing a geometric bifurcation and identifying object-level causes of the modality gap.
[Paper]
[Project]
[Code]
ICLR
NeurIPS
ECCV
Yichao Cai; Yuhang Liu; Zhen Zhang;
Javen Q. Shi.
European Conference on Computer Vision (ECCV), 2024
Explores language-guided disentanglement of style and content through contrastive learning with augmented prompts.
[Paper]
[Project]
[Code]
View all publications
Teaching
-
Semester 1 2026
Teaching Assistant - Neural Networks and Deep Learning (ARTI X300), Adelaide University
-
Semester 2 2025
Guest Lecturer, Head Tutor - Statistical Machine Learning (COMP SCI 3314), Adelaide University
-
Trimester 2 2025
Teaching Assistant - Using Machine Learning Tools (COMP SCI 7317), Adelaide University
-
Semester 1 2025
Teaching Assistant - Concepts in AI and ML (COMP SCI 7327), Adelaide University
Honors & Awards
-
Oct 2025
NeurIPS Scholar Award
-
Sep 2023
Adelaide University Research Scholarships
-
Jun 2019
Award for Outstanding Graduates, Wuhan University of Technology
Academic Service
Conference Reviewers
- International Conference on Learning Representations (ICLR) 2026
- International Conference on Machine Learning (ICML) 2026, Silver Reviewer Award
- Conference on Neural Information Processing Systems (NeurIPS) 2026
Journal Reviewers
- Transactions on Machine Learning Research (TMLR)