William June Suk Choi
Graduate student at KAIST
KAIST AI
w_choi [AT] kaist.ac.kr / wchoi403 [AT] gmail.com
About
I am a third-year Ph.D. student at Korea Advanced Institute of Science and Technology (KAIST), advised by Prof. Kimin Lee and Prof. Jinwoo Shin. My research focuses on enhancing the efficiency and controllability of generative models, with a primary focus on image and video diffusion models.
Publications
[P2] Enhancing Motion Dynamics of Image-to-Video Models via Adaptive Low-Pass Guidance
June Suk Choi, Kyungmin Lee, Sihyun Yu, Yisol Choi, Jinwoo Shin, Kimin Lee
Preprint
[C5] Enhancing LLM Agent Safety via Causal Influence Prompting
Dongyoon Hahm, Woogyeol Jin, June Suk Choi, Sungsoo Ahn, Kimin Lee
Findings of the Association for Computational Linguistics (ACL Findings), 2025
[C4] Silent Branding Attack: Trigger-free Data Poisoning Attack on Text-to-Image Diffusion Models
Sangwon Jang, June Suk Choi, Jaehyeong Jo, Kimin Lee^, Sung Ju Hwang^
IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2025
[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
[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, 547/12957=4.2%)
[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
[P1] MobileSafetyBench: Evaluating Safety of Autonomous Agents in Mobile Device Control
Juyong Lee*, Dongyoon Hahm*, June Suk Choi*, W. Bradley Knox, Kimin Lee
Preprint
[P2] Enhancing Motion Dynamics of Image-to-Video Models via Adaptive Low-Pass Guidance
June Suk Choi, Kyungmin Lee, Sihyun Yu, Yisol Choi, Jinwoo Shin, Kimin Lee
Preprint
[C5] Enhancing LLM Agent Safety via Causal Influence Prompting
Dongyoon Hahm, Woogyeol Jin, June Suk Choi, Sungsoo Ahn, Kimin Lee
Findings of the Association for Computational Linguistics (ACL Findings), 2025
[C4] Silent Branding Attack: Trigger-free Data Poisoning Attack on Text-to-Image Diffusion Models
Sangwon Jang, June Suk Choi, Jaehyeong Jo, Kimin Lee^, Sung Ju Hwang^
IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2025
[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
[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, 547/12957=4.2%)
[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
[P1] MobileSafetyBench: Evaluating Safety of Autonomous Agents in Mobile Device Control
Juyong Lee*, Dongyoon Hahm*, June Suk Choi*, W. Bradley Knox, Kimin Lee
Preprint
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
Adobe Research (San Jose, CA)Jan. 2026 - Apr. 2026 (Upcoming)
Selected Research Intern Host: Dr. Long Mai
(To be formalized in October 2025)
PLUME.D Jan. 2022 - Jan. 2023
Chief Technology Officer and Co-founder
- Led the development of AvaKit, the company's core product, securing KRW 1B (approx. USD 700K) in funding.
- 1st place (of 876 teams), 11th Chung Ju-Young Startup Competition (largest private startup contest in Korea).
- 2nd place (of 5,420 teams), K-Startup Grand Challenge 2022 (largest government startup contest in Korea).
Academic Services
Reviewer, NeurIPS, ICML, CVPR, ACL, TMLR
Honors & Awards
Dean's List, KAIST College of Engineering (2020F)Jan. 2021
Recipient, National Science and Engineering Undergraduate ScholarshipMay. 2020