Junwei Yu

Hi! I'm a fourth-year undergraduate at UC Berkeley, pursuing B.A. in Computer Science (Honors) and Applied Mathematics. You can find my coursework here. I'm conducting research in Berkeley AI Research (BAIR), where I'm very fortunate to be advised by Dr. XuDong Wang and Prof. Trevor Darrell.

My research focuses on self-supervised learning, representation learning, and foundation models. I also have experience in learning theory and optimization.

Email  /  CV  /  Scholar  /  Github  /  Linkedin

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Publications

UnSAMv2: Self-Supervised Learning Enables Segment Anything at Any Granularity
Junwei Yu, Trevor Darrell, XuDong Wang
arXiv 2025
Paper | Project page | Code
Fast John Ellipsoid Computation with Differential Privacy Optimization
(Alphabetical Order)
Xiaoyu Li*, Yingyu Liang*, Zhenmei Shi*, Zhao Song*, Junwei Yu*
CPAL 2025, Oral
Paper
Quantum Speedups for Approximating the John Ellipsoid
(Alphabetical Order)
Xiaoyu Li*, Zhao Song*, Junwei Yu*
QIP 2025
Paper

Experience

Amazon: Software Engineering Intern
Summer 2025: Member of Global Payment Tech
DATA C140: Probability for Data Science
Fall 2024: Tutor
Supervised by Prof. Ani Adhikari