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I'm a M.S. student in Visual Representation Learning Lab at Sogang University, advised by Prof. Junsuk Choe.
My research lies in the field of AI Safety, with a particular interest in building models that are both fair and responsible. Specifically, I am interested in long-tail learning and machine unlearning, addressing challenges in Trustworthy AI. Long-tail learning aims to mitigate model bias caused by imbalanced data, while machine unlearning seeks to selectively remove the influence of specific data to protect user privacy and copyright.
Recently, I have been exploring unlearning techniques in both large language models (LLMs) and large vision-language models (LVLMs).
News
07/2025: 1 paper accepted to COLM 2025.
01/2025: served as a visiting scholar at the Tübingen AI Center (Host: Prof. Dr. Seong Joon Oh).
03/2024: started my M.S. at Sogang University.
Publications
*Co-first Authors, †Co-corresponding Authors
OVS Meets Continual Learning: Towards Sustainable Open-Vocabulary Segmentation
Dongjun Hwang, Yejin Kim, Minyoung Lee, Seong Joon Oh, Junsuk Choe.
In submission.
Improving Fisher Information Estimation and Efficiency for LoRA-based LLM Unlearning
Yejin Kim*, Eunwon Kim*, Buru Chang†, Junsuk Choe†.
COLM 2025.
Education
Sogang University, Korea (Mar. 2024 - Present)
M.S. in Artificial Intelligence
Advisor: Prof. Junsuk Choe
CGPA 4.3/4.3 (4.5/4.5)
Sogang University, Korea (Mar. 2019 - Feb. 2024)
B.S. in Computer Science and Engineering
CGPA 3.89/4.3 (4.19/4.5) - Magna Cum Laude
Work Experience
Visiting scholar, Tübingen AI Center (Host: Prof. Dr. Seong Joon Oh), Germany (Jan. 2025 - Feb. 2025)
HCI research intern in Center for Intelligent & Interactive Robotics, Korea Institute of Science and Technology, Korea (Jun. 2023 - Aug. 2023)
5th generation Cadet, 42 Seoul, Korea (Oct. 2021 - Jul. 2023)
Awards & Honors
Albatross Fellowship ($21K, top 10% rank honor), Sogang University, Korea (Mar. 2024 - Feb. 2026)
Digital Human & Entertainment Scholarship ($27K), Smilegate, Korea (Mar. 2024 - Feb. 2026)
Excellence prize (team BIROSO), SUAPC 2022 Winter - Algorithm Competition, Korea (Feb. 2022)
Teaching Experience
GITA388: Pattern Recognition (25S)
GITA385: Basic Deep Learning (24F, 25S)
AIE4014: Introduction to Deep Learning (24F)
COR1010: Basic Artificial Intelligence Programming (20S, 20F, 21S, 24F, 24S)
STS2008: C Language (22F, 23S)
CSE2003: Introduction to Engineering Design (21S)
Other Experience
2023 Book Reviewer, Hanbit Media, Korea (Feb. 2023 - Jan. 2024)
Volunteer for foreign exchange students, H.U.G, Sogang University, Korea (Sep. 2022 - Feb. 2024)
Study algorithms, Sogang ICPC Team, Sogang University, Korea (Dec. 2021 - Aug. 2023)
Play Korean traditional instruments, SGPY, Sogang University, Korea (Mar. 2019 - Feb. 2021)
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