Yeonjun Hwang

I am a research intern at MLAI under the supervision of Prof. Sungju Hwang. I received my Bachelor's Degree of Business Administration and Computer Science at Yonsei University. I worked as a research intern at Language & AGI Lab under the supervision of Prof. Jinyoung Yeo.

My research focuses on developing large language models for real-world applications — AI Agents, decision-making of LLMs.

Yonsei University, Seoul hbhhyj@yonsei.ac.kr hbhhyj1005@gmail.com
Yeonjun Hwang
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News

May 2026
πŸŽ‰ Our paper EMBGuard is accepted to ICML 2026!
Jan 2026
πŸ“„ New preprint CONDESION-BENCH is now available on arXiv.
Sep 2025
πŸŽ‰ Our paper Web-Shepherd is accepted to NeurIPS 2025 as a Spotlight!
Aug 2025
πŸŽ‰ Our paper PRINCIPLES is accepted to EMNLP 2025 Findings!
May 2025
πŸŽ‰ Our paper MindVoyager is accepted to ACL 2025 Findings!
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Education

Mar 2026 β€” Present

Yonsei University

M.S. in Department of Artificial Intelligence
Seoul, Republic of Korea
Mar 2020 β€” Feb 2026

Yonsei University

B.B.A. in Business Administration and B.S. in Computer Science
Seoul, Republic of Korea
Advisor: Prof. Jinyoung Yeo
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Publications

* denotes equal contribution

Published
EMBGUARD figure
ICML 2026
EMBGUARD: Constructing Hazard-Aware Guardrails for Safe Planning in Embodied Agents
Dongwook Choi*, Taeyoon Kwon*, Bogyung Jeong, Minju Kim, Yeonjun Hwang, Hyojun Kim, Byungchul Kim, Young Kyun Jang, Jinyoung Yeo
Web-Shepherd figure
NeurIPS 2025 Spotlight
Web-Shepherd: Advancing PRMs for Reinforcing Web Agents
Hyungjoo Chae*, Sunghwan Kim*, Junhee Cho*, Seungone Kim, Seungjun Moon, Gyeom Hwangbo, Dongha Lim, Minjin Kim, Yeonjun Hwang, Minju Gwak, Dongwook Choi, Minseok Kang, Gwanhoon Im, ByeongUng Cho, Hyojun Kim, Jun Hee Han, Taeyoon Kwon, Minju Kim, Beong-woo Kwak, Dongjin Kang, Jinyoung Yeo
PRINCIPLES figure
EMNLP 2025 Findings
PRINCIPLES: Synthetic Strategy Memory for Proactive Dialogue Agents
Namyoung Kim, Kai Tzu-iunn Ong, Yeonjun Hwang, Minseok Kang, Iiseo Jihn, Gayoung Kim, Minju Kim, Jinyoung Yeo
Mind-Voyager figure
ACL 2025 Findings
Can You Share Your Story? Modeling Clients' Metacognition and Openness for LLM Therapist Evaluation
Minju Kim, Dongje Yoo, Yeonjun Hwang, Minseok Kang, Namyoung Kim, Minju Gwak, Beong-woo Kwak, Hyungjoo Chae, Harim Kim, Yunjoong Lee, Min Hee Kim, Dayi Jung, Kyong-Mee Chung, Jinyoung Yeo
Preprint
CONDESION-BENCH figure
arXiv 2026
CONDESION-BENCH: Conditional Decision-Making of Large Language Models in Compositional Action Space
Yeonjun Hwang, Sungyong Park, Minju Kim, Dongha Lee, Jinyoung Yeo