Publications

2025

  1. Preprint
    DEAS: DEtached value learning with Action Sequence for Scalable Offline RL
    Changyeon Kim, Haewon Lee, Younggyo Seo, Kimin Lee^, and Yuke Zhu^
    In Preprint, 2025
    (^: equal advising)
    arXiv PDF Website
  2. CoLLAs
    B-MoCA: Benchmarking Mobile Device Control Agents across Diverse Configurations
    Juyong Lee, Taywon Min, Minyong An, Dongyoon Hahm, Haeone Lee,  Changyeon Kim, and Kimin Lee
    In Conference on Lifelong Learning Agents (CoLLAs), 2025
    Previously accepted to ICLR 2024 Workshop on Generative Models for Decision Making as a **spotlight presentation**
    arXiv Code Website
  3. ICLR
    Subtask-Aware Visual Reward Learning from Segmented Demonstrations
    Changyeon Kim, Minho Heo, Doohyun Lee, Jinwoo Shin, Honglak Lee, Joseph J. Lim^, and Kimin Lee^
    In International Conference on Learning Representations (ICLR), 2025
    (^: equal advising)
    arXiv PDF Code Website
  4. Preprint
    Verifier-free Test-Time Sampling for Vision Language Action Models
    Suhyeok Jang, Dongyoung Kim,  Changyeon Kim, Youngsuk Kim, and Jinwoo Shin
    In Preprint, 2025
    arXiv
  5. Preprint
    HAMLET: Switch Your Vision-Language-Action Model into a History-Aware Policy
    Myungkyu Koo, Daewon Choi, Taeyoung Kim, Kyungmin Lee,  Changyeon Kim, Younggyo Seo, and Jinwoo Shin
    In Preprint, 2025
    arXiv Website
  6. Preprint
    Contrastive Representation Regularization for Vision-Language-Action Models
    Taeyoung Kim, Jimin Lee, Myungkyu Koo, Dongyoung Kim, Kyungmin Lee,  Changyeon Kim, Younggyo Seo, and Jinwoo Shin
    In Preprint, 2025
    arXiv

2024

    2023

    1. NeurIPS
      Guide Your Agent with Adaptive Multimodal Rewards
      Changyeon Kim, Younggyo Seo, Hao Liu, Lisa Lee, Jinwoo Shin, Honglak Lee, and Kimin Lee
      In Conference on Neural Information Processing Systems (NeurIPS), 2023
      Previously accepted to ICML 2023 Workshop on New Frontiers in Learning, Control, and Dynamical Systems
      Finalist of Qualcomm Innovation Fellowship 2024 Korea
      arXiv PDF Code Website
    2. ICLR
      Preference Transformer: Modeling Human Preferences using Transformers for RL
      Changyeon Kim*, Jongjin Park*, Jinwoo Shin, Honglak Lee, Pieter Abbeel, and Kimin Lee
      In International Conference on Learning Representations (ICLR), 2023
      (*: equal contribution)
      arXiv PDF Code Website

    2022

    1. NeurIPSW
      Dynamics-Augmented Decision Transformer for Offline Dynamics Generalization
      Changyeon Kim*, Junsu Kim*, Younggyo Seo, Kimin Lee, Honglak Lee, and Jinwoo Shin
      In Conference on Neural Information Processing Systems (NeurIPS) Workshop on Offline Reinforcement Learning, 2022
      (*: equal contribution)
      PDF

    Others

    2021

    1. ArXiv
      Moi-mixer: Improving mlp-mixer with multi order interactions in sequential recommendation
      Hojoon Lee, Dongyoon Hwang, Sunghwan Hong,  Changyeon Kim, Seungryong Kim, and Jaegul Choo
      In ArXiv preprint, 2021
      arXiv

    2020

    1. CSCW
      Collecting the public perception of AI and robot rights
      Gabriel Lima,  Changyeon Kim, Seungho Ryu, Chihyung Jeon, and Meeyoung Cha
      Proceedings of the ACM on Human-Computer Interaction, 2020
      arXiv HTML