Hojoon Lee

Publications

Selected / All

FlashDexRetarget: Accelerating Dexterous Manipulation through Multi-Motion Retargeting
Kyungmin Lee*, Sibeen Kim*, Dongyoon Hwang*, Yoonsang Oh*, Donghu Kim, Youngdo Lee, Aswin Nahrendra, Jaegul Choo^†, Hojoon Lee^†
Preprint

Project arXiv Code

DiscoDemo: Discovering Efficient and Diverse Robot Demonstrations for Imitation Learning
Minho Park*, Kinam Kim*, Donghu Kim, Byungkun Lee, Dongyoon Hwang, Yongjae Shin, Junha Hyung, Hojoon Lee^†, Jaegul Choo^†
Preprint

Project Code Datasets

See like a Robot: Robot-Centric Pointmaps for Vision-Language-Action Models
Byungkun Lee*, Dongyoon Hwang*, Dongjin Kim, Hojoon Lee, Minho Park, Jaegul Choo
Preprint

Project arXiv Code

PHUMA: Physically Reliable Humanoid Locomotion Dataset
Kyungmin Lee*, Sibeen Kim*, Youngdo Lee, Minho Park, Hyunseung Kim, Dongyoon Hwang, Donghu Kim, Hojoon Lee^†, Jaegul Choo^†
CoRL'26, Spotlight

Project arXiv Code

3D HAMSTER: Hierarchical VLAs through 3D Trajectory Guidance
Dongyoon Hwang*, Byungkun Lee*, Dongjin Kim, Hyojin Jang, Hoiyeong Jin, Jueun Mun, Minho Park, Hojoon Lee, Hyunseung Kim, Jaegul Choo
IROS'26

Project arXiv

RDA: Reward Design Agent for Reinforcement Learning
Hojoon Lee, Ajay Subramanian, Ben Abbatematteo, Pedro Matias, Vijay Veerabadran, Karl Ridgeway, Nitin Kamra
RLC'26

arXiv

FlashSAC: Fast and Stable Off-Policy RL for High-Dimensional Robot Control
Donghu Kim*, Youngdo Lee*, Minho Park, Kinam Kim, Takuma Seno, Aswin Nahrendra, Sehee Min, Daniel Palenicek, Florian Vogt, Danica Kragic, Jan Peters, Jaegul Choo^†, Hojoon Lee^†
RSS'26, Outstanding Paper Award 🏆

Project arXiv Code

ACG: Action Coherence Guidance for Flow-based VLA models
Minho Park*, Kinam Kim*, Junha Hyung, Hyojin Jang, Hoiyeong Jin, Jooyeol Yun, Hojoon Lee^†, Jaegul Choo^†
ICRA'26

Project arXiv Code

FIRE: Frobenius-Isometry Reinitialization for Balancing Stability-Plasticity Tradeoff
Isaac Han, Sangyeon Park, Seungwon Oh, Donghu Kim, Hojoon Lee^†, Kyungjoon Kim^†
ICLR'26, Oral

arXiv

Maintaining Plasticity for Scalable Deep Reinforcement Learning
Committee: Jaegul Choo, Chulhee Yun, Kimin Lee, Clare Lyle, Peter Stone
Thesis

Slides

A Champion‑level Vision‑based RL Agent for Competitive Racing in Gran Turismo 7
Hojoon Lee*, Takuma Seno*, Jun Jet Tai*, Kaushik Subramanian, Kenta Kawamoto, Peter R. Wurman, Peter Stone
IEEE RA-L & ICRA'26

arXiv Video

SimbaV2: Hyperspherical Normalization for Scalable Deep Reinforcement Learning
Hojoon Lee*, Youngdo Lee*, Takuma Seno, Donghu Kim, Peter Stone, Jaegul Choo
ICML'25, Spotlight

Project arXiv Code

SimBa: Simplicity Bias for Scaling Up Parameters in Deep Reinforcement Learning
Hojoon Lee*, Dongyoon Hwang*, Donghu Kim, Hyunseung Kim, Jun Jet Tai, Kaushik Subramanian, Peter R. Wurman, Jaegul Choo, Peter Stone, Takuma Seno
ICLR'25, Spotlight

Project arXiv Code

Do's and Don'ts: Learning Desirable Skills with Instruction Videos
Hyunseung Kim, Byungkun Lee, Hojoon Lee, Dongyoon Hwang, Donghu Kim, Jaegul Choo
NeurIPS'24

Project arXiv

Slow and Steady Wins the Race: Maintaining Plasticity with Hare and Tortoise Networks
Hojoon Lee, Hyeonseo Cho, Hyunseung Kim, Donghu Kim, Dugki Min, Jaegul Choo, Clare Lyle
ICML'24

arXiv Poster

ATARI-PB: Investigating Pre-Training Objectives for Generalization in Vision-Based RL
Donghu Kim*, Hojoon Lee*, Kyungmin Lee*, Dongyoon Hwang, Jaegul Choo
ICML'24

Project arXiv Poster

Adapting Pretrained ViTs with Convolution Injector for Visuo-Motor Control
Dongyoon Hwang*, Byungkun Lee*, Hojoon Lee, Hyunseung Kim, Jaegul Choo
ICML'24

Project arXiv

PLASTIC: Improving Input and Label Plasticity for Sample Efficient Reinforcement Learning
Hojoon Lee*, Hanseul Cho*, Hyunseung Kim*, Daehoon Gwak, Joonkee Kim, Jaegul Choo, Se-Young Yun, Chulhee Yun
NeurIPS'23

arXiv Code Slides Poster

DISCO-DANCE: Learning to Discover Skills through Guidance
Hyunseung Kim*, Byungkun Lee*, Hojoon Lee, Dongyoon Hwang, Jaegul Choo
NeurIPS'23

Project arXiv Code

SimTPR: On the Importance of Feature Decorrelation for Unsupervised Representation Learning for Reinforcement Learning
Hojoon Lee, Koanho Lee, Dongyoon Hwang, Hyunho Lee, Byungkun Lee, Jaegul Choo
ICML'23

arXiv Code Poster

Towards Validating Long-Term User Feedbacks in Interactive Recommender System
Hojoon Lee, Dongyoon Hwang, Kyushik Min, Jaegul Choo
SIGIR'22 (short), Honorable Mention Award 🥈

arXiv Poster