I'm a M.S. student in Artificial Intelligence 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, responsible, and transparent. Specifically, I am interested in machine unlearning, which seeks to selectively remove the influence of specific data to protect user privacy, copyright, and data ownership.
Recently, I have been exploring unlearning techniques in both large language models (LLMs) and large vision-language models (LVLMs). In this context, I have also developed a growing interest in model explainability, as understanding why and how a model forgets certain knowledge is crucial for ensuring trustworthy and verifiable unlearning. By combining unlearning and explainability, my goal is to contribute toward safer and more accountable AI systems.
News
09/2025: 1 paper accepted to NeurIPS 2025.
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).
Publications
*Co-first Authors, †Co-corresponding Authors
❐ Enhancing Multi-Image Understanding through Delimiter Token Scaling
Minyoung Lee, Yeji Park, Dongjun Hwang, Yejin Kim, Seong Joon Oh, Junsuk Choe.
Preprint.
[2] OVS Meets Continual Learning: Towards Sustainable Open-Vocabulary Segmentation
Dongjun Hwang, Yejin Kim, Minyoung Lee, Seong Joon Oh, Junsuk Choe.
NeurIPS 2025.
[1] Improving Fisher Information Estimation and Efficiency for LoRA-based LLM Unlearning
Yejin Kim*, Eunwon Kim*, Buru Chang†, Junsuk Choe†.
COLM 2025.
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)
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)