Jongwook Han

Ph.D. student, Graduate School of Data Science, Seoul National University

I am advised by Prof. Yohan Jo in the Human-Oriented Language Intelligence (HOLI) Lab.

My research centers on pluralistic value alignment: how robots and language models can recognize, reason about, and respect diverse human values in everyday settings.

Jongwook Han

Research

  • Household robot evaluation beyond task success
  • Psychometric and behavioral evaluation of large language models
  • Pluralistic value alignment for human-facing AI systems

Background

  • Seoul National University
    Ph.D. student, Graduate School of Data Science     Present
  • KAIST
    M.S. in Electrical Engineering
  • Yonsei University
    B.S. in Integrated Technology

Selected Publications

  1. ICML WS
    RobotValues: Evaluating Household Robots When Human Values Conflict
    Jongwook Han, Hyeongjin Kim, and Yohan Jo
    In Pluralistic Alignment Workshop at ICML 2026,
    Workshop paper
    arXiv
  2. ICML
    Dual Mechanisms of Value Expression: Intrinsic vs. Prompted Values in LLMs
    Jongwook Han*, Jongwon Lim*, Injin Kong, and Yohan Jo
    2026
    Accepted to ICML 2026
    arXiv
  3. EACL
    Quantifying Data Contamination in Psychometric Evaluations of LLMs
    Jongwook Han*, Woojung Song*, Jonggeun Lee*, and Yohan Jo
    In Findings of the Association for Computational Linguistics: EACL, 2026
    HTML
  4. ACL
    Value Portrait: Assessing Language Models’ Values through Psychometrically and Ecologically Valid Items
    Jongwook Han*, Dongmin Choi*, Woojung Song*, Eun-Ju Lee, and Yohan Jo
    In Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics, 2025
    HTML PDF Video Poster
  5. ACL
    PVP: An Image Dataset for Personalized Visual Persuasion with Persuasiveness Ratings, Persuasion Strategies, and Viewer Characteristics
    Junseo Kim, Jongwook Han, Dongmin Choi, Jongwook Yoon, Eun-Ju Lee, and Yohan Jo
    In Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics, 2025
    HTML PDF Poster

Awards

  • Nebius AI Research Grant
    $6,000 in compute credits, Nebius     2026
  • AI Star Scholarship
    Yulchon Foundation     2026
  • National Science and Technology Scholarship
    Korean Student Aid Foundation (KOSAF)     2021
  • Undergraduate Scholarship
    Yonsei University, until military service     2017–2018

Academic Service