Yeon-Chang Lee
Assistant Professor
Artificial Intelligence Graduate School
Ulsan National Institute of Science and Technology (UNIST)
Email: yeonchang [at] unist [dot] ac [dot] kr
[ Lab | Google Scholar | DBLP ]
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Biography: I am an assistant professor in the Artificial Intelligence Graduate School and the Department of Computer Science and Engineering at the Ulsan National Institute of Science and Technology (UNIST). Before joining UNIST, I was a postdoctoral researcher in the School of Computational Science and Engineering at the Georgia Institute of Technology, where I worked with Prof. Srijan Kumar. I received my Ph.D. from Hanyang University under the supervision of Prof. Sang-Wook Kim.
Research Interests
Graph Machine Learning: Trustworthy & Fair Graph Neural Networks; Dynamic & Signed Network Representation Learning
Advanced Recommender Systems: Multimodal Recommendation; LLM-Powered Recommender Systems; Personalization & Persona Modeling
Knowledge Graph & Ontology: Temporal Knowledge Graph (TKG) Modeling; Multimodal Knowledge Graph (MMKG); Domain-Specific KG Construction & Reasoning
Trustworthy AI & Applications: Algorithmic Fairness & Masked Bias Mitigation; Network Polarization Analysis; Feedback Loop Diagnostics & Risk Analysis
Publications
Please refer to my lab page or Google Scholar for a complete list of my publications.
Teaching
Undergraduate Courses
CSE304 Introduction to Data Mining (2026F)
CSE403 Deep Learning (2025F)
CSE321 Database Systems (2024F)
Graduate Courses
AI503 AI Toolkits (2024S, 2025S, 2026S)
NOVA503 AI Toolkit for Industry (2025F)
Positions
UNIST, Ulsan, South Korea | Dec. 2023 - Present
Assistant Professor, Artificial Intelligence Graduate School
Affiliated Assistant Professor, Department of Computer Science and EngineeringGeorgia Institute of Technology, Atlanta, GA, United States | July 2022 - Nov. 2023
Postdoctoral Researcher, School of Computational Science and Engineering (Advisor: Prof. Srijan Kumar)Hanyang University, Seoul, South Korea | Mar. 2021 - June 2022
Postdoctoral Researcher, Department of Artificial Intelligence (Advisor: Prof. Sang-Wook Kim)
Education
Hanyang University, Seoul, South Korea | Feb. 2021
Ph.D. in Computer Science (Advisor: Prof. Sang-Wook Kim)Eulji University, Seongnam, South Korea | Feb. 2014
B.S. in Medical Information Technology
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