I'm a Ph.D. student at Sungkyunkwan University, advised by Prof. JinYeong Bak. I am broadly interested in building AI systems that can reason and act robustly and efficiently in real-world scenarios. I also explore how to equip these systems with human values and emotions.
Currently, I'm interning at Microsoft Research Asia Beijing under the guidance of Dr. Xiaoyuan Yi, focusing on cultural alignment in large language models.
Unintended Harms of Value-Aligned LLMs: Psychological and Empirical Insights
Sooyung Choi*, Jaehyeok Lee*, Xiaoyuan Yi, Jing Yao, Xing Xie, JinYeong Bak (*: equal contribution)
Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (ACL 2025)
Self-Training Meets Consistency: Improving LLMs' Reasoning with Consistency-Driven Rationale Evaluation
Jaehyeok Lee, Keisuke Sakaguchi, JinYeong Bak
Proceedings of the 2025 Annual Conference of the Nations of the Americas Chapter of the Association for Computational Linguistics (NAACL 2025)
Enhancing Emotion-Cause Pair Extraction in Conversation with Contextual Information
Jaehyeok Lee, DongJin Jeong, JinYeong Bak
Authorea preprint 2023
Microsoft Research Asia, Beijing (Jul 2025 – Dec 2025 [expected])
Research Intern
Human Language Intelligence Lab @ SKKU (Aug 2022 – Present)
Student Researcher
Sungkyunkwan University (SKKU) (Mar 2025 – Present)
Ph.D., Artificial Intelligence
Advisor: Prof. JinYeong Bak
Sungkyunkwan University (SKKU) (Mar 2023 – Feb 2025)
M.S., Artificial Intelligence
Advisor: Prof. JinYeong Bak
Sungkyunkwan University (SKKU) (Mar 2017 – Feb 2023)
B.S., Computer Science and Engineering
B.S., Chemical Engineering
Psychological and Empirical Insights on the Harms of Aligning LLMs with Human Values
Microsoft Research Asia Intern Tech Talk (Summer 2025)
Device and method for generating emotion-cause pair based on conversation, and storage medium storing instruction to perform method for generating emotion cause pair
DongJin Jeong, JinYeong Bak, Jaehyeok Lee
United States Patent Application