William June Suk Choi

About

I am a Ph.D. student at Korea Advanced Institute of Science and Technology (KAIST), advised by Prof. Kimin Lee and Jinwoo Shin. I received a B.S. degree in computer science at KAIST. I am currently interested in AI safety, especially in diffusion models and large language models.

Publications

Selected
All

[C3] DiffusionGuard: A Robust Defense Against Malicious Diffusion-based Image Editing

June Suk Choi, Kyungmin Lee, Jongheon Jeong, Saining Xie, Jinwoo Shin, Kimin Lee

International Conference on Learning Representations (ICLR), 2025

arXiv Code

[C2] DiffExp: Efficient Exploration in Reward Fine-tuning for Text-to-Image Diffusion Models

Daewon Chae^*, June Suk Choi^*, Jinkyu Kim^{^}, Kimin Lee^{^}

AAAI Conference on Artificial Intelligence (AAAI), 2025(Oral Presentation)

arXiv

[C1] Collaborative Score Distillation for Consistent Visual Editing

Subin Kim^*, Kyungmin Lee^*, June Suk Choi, Jongheon Jeong, Kihyuk Sohn, Jinwoo Shin

Conference on Neural Information Processing Systems (NeurIPS), 2023

arXiv Website Code

[P1] MobileSafetyBench: Evaluating Safety of Autonomous Agents in Mobile Device Control

Juyong Lee^*, Dongyoon Hahm^*, June Suk Choi^*, W. Bradley Knox, Kimin Lee

Preprint

arXiv Website Code

[C3] DiffusionGuard: A Robust Defense Against Malicious Diffusion-based Image Editing

June Suk Choi, Kyungmin Lee, Jongheon Jeong, Saining Xie, Jinwoo Shin, Kimin Lee

International Conference on Learning Representations (ICLR), 2025

Arxiv Code

[C2] DiffExp: Efficient Exploration in Reward Fine-tuning for Text-to-Image Diffusion Models

Daewon Chae^*, June Suk Choi^*, Jinkyu Kim^{^}, Kimin Lee^{^}

AAAI Conference on Artificial Intelligence (AAAI), 2025(Oral Presentation)

Arxiv

[C1] Collaborative Score Distillation for Consistent Visual Editing

Subin Kim^*, Kyungmin Lee^*, June Suk Choi, Jongheon Jeong, Kihyuk Sohn, Jinwoo Shin

Conference on Neural Information Processing Systems (NeurIPS), 2023

Arxiv Website Code

[P1] MobileSafetyBench: Evaluating Safety of Autonomous Agents in Mobile Device Control

Juyong Lee^*, Dongyoon Hahm^*, June Suk Choi^*, W. Bradley Knox, Kimin Lee

Preprint

Arxiv Website Code

Education

Korea Advanced Institute of Science and Technology (KAIST)Sep. 2023 - Present

Ph.D. Student in Artificial Intelligence

Korea Advanced Institute of Science and Technology (KAIST)Mar. 2019 - Aug. 2023

B.S. in Computer Science (summa cum laude)

Experience

Chief Technology Officer and Co-founderJan. 2022 - Jan. 2023

PLUME.D

Academic Services

Journal Reviewer, TMLR

Honors & Awards

Dean's List, KAIST College of Engineering (2020F)Jan. 2021

Recipient, National Science and Engineering Undergraduate ScholarshipMay. 2020