publications

2026

1. ACL

   Don’t Adapt Small Language Models for Tools; Adapt Tool Schemas to the Models

   Jonggeun Lee^*, Woojung Song^*, Jongwook Han, Haesung Pyun, and Yohan Jo

   2026

   Accepted to ACL 2026

   arXiv Bib

   @misc{lee2026toolschemas,
     title = {Don't Adapt Small Language Models for Tools; Adapt Tool Schemas to the Models},
     author = {Lee, Jonggeun and Song, Woojung and Han, Jongwook and Pyun, Haesung and Jo, Yohan},
     year = {2026},
     note = {Accepted to ACL 2026},
   }

2. 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, 2026

   Bib HTML

   @inproceedings{han2026contamination,
     title = {Quantifying Data Contamination in Psychometric Evaluations of LLMs},
     author = {Han, Jongwook and Song, Woojung and Lee, Jonggeun and Jo, Yohan},
     booktitle = {Findings of the Association for Computational Linguistics: EACL 2026},
     year = {2026},
   }

2025

1. 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

   Bib HTML PDF Video Poster

   @inproceedings{han2025valueportrait,
     title = {Value Portrait: Assessing Language Models' Values through Psychometrically and Ecologically Valid Items},
     author = {Han, Jongwook and Choi, Dongmin and Song, Woojung and Lee, Eun-Ju and Jo, Yohan},
     booktitle = {Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics},
     year = {2025},
   }

2. 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

   Bib HTML PDF Poster

   @inproceedings{kim2025pvp,
     title = {PVP: An Image Dataset for Personalized Visual Persuasion with Persuasiveness Ratings, Persuasion Strategies, and Viewer Characteristics},
     author = {Kim, Junseo and Han, Jongwook and Choi, Dongmin and Yoon, Jongwook and Lee, Eun-Ju and Jo, Yohan},
     booktitle = {Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics},
     year = {2025},
   }

3. arXiv

   Human Psychometric Questionnaires Mischaracterize LLM Psychology: Evidence from Generation Behavior

   Woojung Song, Dongmin Choi, Yoonah Park, Jongwook Han, and Yohan Jo

   2025

   Under review

   arXiv Bib

   @misc{song2025psychometric,
     title = {Human Psychometric Questionnaires Mischaracterize LLM Psychology: Evidence from Generation Behavior},
     author = {Song, Woojung and Choi, Dongmin and Park, Yoonah and Han, Jongwook and Jo, Yohan},
     year = {2025},
     note = {Under review}
   }

4. arXiv

   Dual Mechanisms of Value Expression: Intrinsic vs. Prompted Values in LLMs

   Jongwook Han^*, Jongwon Lim^*, Injin Kong, and Yohan Jo

   2025

   Under review

   arXiv Bib

   @misc{han2025dualvalues,
     title = {Dual Mechanisms of Value Expression: Intrinsic vs. Prompted Values in LLMs},
     author = {Han, Jongwook and Lim, Jongwon and Kong, Injin and Jo, Yohan},
     year = {2025},
     note = {Under review}
   }

5. NeurIPS WS

   Dual Mechanisms of Value Expression: Decomposing Intrinsic and Prompted Values in Language Models

   Jongwook Han^*, Jongwon Lim^*, Injin Kong, and Yohan Jo

   In Mechanistic Interpretability Workshop at NeurIPS 2025, 2025

   Workshop paper

   Bib HTML

   @inproceedings{han2025dualworkshop,
     title = {Dual Mechanisms of Value Expression: Decomposing Intrinsic and Prompted Values in Language Models},
     author = {Han, Jongwook and Lim, Jongwon and Kong, Injin and Jo, Yohan},
     booktitle = {Mechanistic Interpretability Workshop at NeurIPS 2025},
     year = {2025},
     note = {Workshop paper}
   }