Yejin Son
Hi! I’m Yejin Son, a Master student in Artificial Intelligence at the Yonsei University advised by Prof. Youngjae Yu. I am currently a visiting researcher with Prof. Zhijing Jin at Jinesis AI Lab, University of Toronto. I received my B.S. in Economics and Applied Statistics from Yonsei.
Research Interests
I am a researcher dedicated to building AI that truly ‘sees’ and supports people without diminishing their autonomy. My work in Multimodal Reasoning and Pluralistic Alignment focuses on moving beyond one-size-fits-all models toward Socially-Aware AI that respects individual uniqueness.
I believe the future of AI lies in augmenting human agency, ensuring that technology does not overshadow or displace human thought but serves as a catalyst for mutual growth. My mission is to develop responsible systems that act as meaningful partners in our daily lives, empowering individuals to flourish and helping bridge the gaps in human-to-human relationships. Ultimately, I strive to contribute to AI that not only understands us more fully but also inspires us to connect more deeply with one another.
Publications
Investigating Counterfactual Unfairness in LLMs towards Identities through Humor
Yejin Son*, Shubin Kim*, Junyeong Park, Keummin Ka, Seungbeen Lee, Jaeyoung Lee, Hyeju Jang, Alice Oh, Youngjae Yu
Coming Soon
Subtle Risks, Critical Failures: A Framework for Diagnosing Physical Safety of LLMs for Embodied Decision Making
Yejin Son*, Minseo Kim*, Sungwoong Kim, Seungju Han, Jian Kim, Dongju Jang, Youngjae Yu, Chan Young Park
Published in EMNLP 2025
[Paper]
G1yphD3c0de: Towards Safer Language Models on Visually Perturbed Texts
Yejin Choi, Yejin Yeo, Yejin Son, Seungju Han, Youngjae Yu
Published in COLM 2025
[Paper]
Mind the Motions: Benchmarking Theory‑of‑Mind in Everyday Body Language
Seungbeen Lee, Jinhong Jeong, Donghyun Kim, Yejin Son, Youngjae Yu
Arxiv
[Paper]
Multimodal UNcommonsense: From Odd to Ordinary and Ordinary to Odd
Yejin Son*, Saejin Kim*, Dongjun Min, Youngjae Yu
Published in EMNLP 2025
[Paper]
Reading Books is Great, But Not if You Are Driving! Visually Grounded Reasoning about Defeasible Commonsense Norms
Seungju Han, Junhyeok Kim, Jack Hessel, Liwei Jiang, Jiwan Chung, Yejin Son, Yejin Choi, Youngjae Yu
Published in EMNLP 2023
[Paper]