Jaehyeok Lee

Jaehyeok Lee

Ph.D. student @ SKKU (HLI Lab)

hjl8708@skku.edu

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.

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Recent Updates

  • [2026/08/21] Our paper Camellia has been accepted to EMNLP 2026
  • [2026/05/01] Our paper DOVE has been accepted to ICML 2026
  • [2025/07/24] I had the opportunity to give a talk at Microsoft Research Asia Intern Tech Talk
  • [2025/06/25] Our ACL paper was selected for oral presentation and invited to a panel discussion!🥳 (25 papers, 0.8% of accepted papers)

Publications

Camellia: Benchmarking Cultural Biases in LLMs for Asian Languages

Tarek Naous, Anagha Savit, Carlos Rafael Catalan, Geyang Guo, Jaehyeok Lee, Kyungdon Lee, Lheane Marie Dizon, Mengyu Ye, Neel Kothari, Sahajpreet Singh, Sarah Masud, Tanish Patwa, Trung Thanh Tran, Zohaib Khan, Alan Ritter, JinYeong Bak, Keisuke Sakaguchi, Tanmoy Chakraborty, Yuki Arase, Wei Xu

EMNLP 2026 (To appear) [Preprint]

Distributional Open-Ended Evaluation of LLM Cultural Value Alignment Based on Value Codebook

Jaehyeok Lee, Xiaoyuan Yi, Jing Yao, Hyunjin Hwang, Roy Ka-Wei Lee, Xing Xie, JinYeong Bak

[Paper]

Enhancing Emotion-Cause Pair Extraction in Conversation with Contextual Information

Jaehyeok Lee, JinYeong Bak

SAC 2026 [Paper]

Unintended Harms of Value-Aligned LLMs: Psychological and Empirical Insights

Sooyung Choi*, Jaehyeok Lee*, Xiaoyuan Yi, Jing Yao, Xing Xie, JinYeong Bak (*: equal contribution)

ACL 2025(🎤 oral & panel; 0.8% of accepted papers)ㅌ [Paper]

Self-Training Meets Consistency: Improving LLMs' Reasoning with Consistency-Driven Rationale Evaluation

Jaehyeok Lee, Keisuke Sakaguchi, JinYeong Bak

NAACL 2025 [Paper] [Code]

Experience

Microsoft Research Asia (Jul 2025 – Dec 2025)

Research Intern

Mentored by Dr. Xiaoyuan Yi

Education

Sungkyunkwan University (Mar 2025 – Present)

Ph.D. Student, Artificial Intelligence

Advised by Prof. JinYeong Bak

Sungkyunkwan University (Mar 2023 – Feb 2025)

M.S., Artificial Intelligence

Advised by Prof. JinYeong Bak

Sungkyunkwan University (Mar 2017 – Feb 2023)

B.S., Computer Science and Engineering

B.S., Chemical Engineering

Academic Services

Conference Reviewer: ICML 2026 (Silver Reviewer Award)

Workshop Reviewer: W-NUT@NAACL 2025, C3NLP@ACL 2026, Pluralistic Alignment@ICML 2026

Talks

Unintended Harms of Value-Aligned LLMs (Nov 2025)

SKKU Seminar in Computer Engineering

Psychological and Empirical Insights on the Harms of Aligning LLMs with Human Values (Jul 2025)

Microsoft Research Asia Intern Tech Talk

Languages

  • Korean: Native
  • English: Working proficiency
  • Japanese: Advanced (JLPT N1)

Patents

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 [Link]

Honors & Awards

  • Stars of Tomorrow Internship Award of Excellence, Microsoft Research Asia (2026)
  • Daesang Foundation Scholarship, Daesang Foundation (2025-2026)
  • Dean’s List, College of Engineering, Sungkyunkwan University (2022)