Publications

ICML 2026

On Training Large Language Models for Long-Horizon Tasks: An Empirical Study of Horizon Length

Sunghwan Kim, Junhee Cho, Beong-woo Kwak, Taeyoon Kwon, Liang Wang, Nan Yang, Xingxing Zhang, Furu Wei, Jinyoung Yeo

Paper

ICLR 2026

MEM1: Learning to Synergize Memory and Reasoning for Efficient Long-Horizon Agents

Zijian Zhou^*, Ao Qu^*, Zhaoxuan Wu, Sunghwan Kim, Alok Prakash, Daniela Rus, Jinhua Zhao, Bryan Kian Hsiang Low, Paul Pu Liang
* Equal contribution

Paper Code

ICLR 2026

Embodied Agents Meet Personalization: Exploring Memory Utilization for Personalized Assistance

Taeyoon Kwon^*, Dongwook Choi^*, Sunghwan Kim, Hyojun Kim, Seungjun Moon, Beong-woo Kwak, Kuan-Hao Huang, Jinyoung Yeo
* Equal contribution

Paper Website Code

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
* Equal contribution

Paper Website Code

EMNLP 2025 Findings

ToolHaystack: Stress-Testing Tool-Augmented Language Models in Realistic Long-Term Interactions

Beong-woo Kwak, Minju Kim, Dongha Lim, Hyungjoo Chae, Dongjin Kang, Sunghwan Kim, Dongil Yang, Jinyoung Yeo

Paper

ACL 2025

LLM Meets Scene Graph: Can Large Language Models Understand and Generate Scene Graphs? A Benchmark and Empirical Study

Dongil Yang, Minjin Kim, Sunghwan Kim, Beong-woo Kwak, Minjun Park, Jinseok Hong, Woontack Woo, Jinyoung Yeo

Paper Code

ACL 2025 Oral

Rethinking Reward Model Evaluation Through the Lens of Reward Overoptimization

Sunghwan Kim^*, Dongjin Kang^*, Taeyoon Kwon, Hyungjoo Chae, Dongha Lee, Jinyoung Yeo
* Equal contribution

Paper Code

ICLR 2025

Web Agents with World Models: Learning and Leveraging Environment Dynamics in Web Navigation

Hyungjoo Chae, Namyoung Kim, Kai Tzu-iunn Ong, Minju Gwak, Gwanwoo Song, Jihoon Kim, Sunghwan Kim, Dongha Lee, Jinyoung Yeo

Paper Code

EMNLP 2024 Findings

Cactus: Towards Psychological Counseling Conversations using Cognitive Behavioral Theory

Suyeon Lee^*, Sunghwan Kim^*, Minju Kim^*, Dongjin Kang, Dongil Yang, Harim Kim, Minseok Kang, Dayi Jung, Min Hee Kim, Seungbeen Lee, Kyoung-Mee Chung, Youngjae Yu, Dongha Lee, Jinyoung Yeo
* Equal contribution

Paper Code

EMNLP 2024

Language Models as Compilers: Simulating Pseudocode Execution Improves Algorithmic Reasoning in Language Models

Hyungjoo Chae, Yeonghyeon Kim, Seungone Kim, Kai Tzu-iunn Ong, Beong-woo Kwak, Moohyeon Kim, Sunghwan Kim, Taeyoon Kwon, Jiwan Chung, Youngjae Yu, Jinyoung Yeo

Paper Code

ACL 2024 Outstanding Paper Award

Can Large Language Models be Good Emotional Supporter? Mitigating Preference Bias on Emotional Support Conversation

Dongjin Kang^*, Sunghwan Kim^*, Taeyoon Kwon, Seungjun Moon, Hyunsouk Cho, Youngjae Yu, Dongha Lee, Jinyoung Yeo
* Equal contribution

Paper Code