Yujin Choi

Assistant Professor at Sejong University

Sejong University Seoul, Korea

I am an Assistant Professor at the Department of Computer Science and Engineering, Sejong University. Prior to joining Sejong University, I was a Postdoctoral Researcher at Nanyang Technological University (NTU) in Singapore, hosted by Prof. Jaehong Yoon and Ulsan National Institute of Science and Technology (UNIST) in Korea, mentored by Prof. Saerom Park. I received my Ph.D. in Industrial Engineering from Seoul National University (SNU), advised by Prof. Jaewook Lee.

My research focuses on building Trustworthy AI, with a particular emphasis on ensuring the privacy, fairness, and robustness of machine learning systems.

Research Interests

• Trustworthy AI: Privacy-preserving machine learning (differential privacy, attack/defense) and fairness.
• Generative Models: Enhancing safety and utility in Diffusion models, Flow matching, and Large Language Models (LLMs).

Education

• Ph.D. in Industrial Engineering, Seoul National University, 2026
  • Dissertation: Trustworthy Generative Model: from Privacy to Fairness
• B.S. in Industrial Engineering and Mathematics, Yonsei University, 2021

News

• [09. 2026] Three papers got accepted: one to IEEE Transactions on Industrial Informatics and two to NeurIPS 2026.
• [09. 2026] Joined Sejong University as an Assistant Professor.
• [06. 2026] One paper got accepted to MICCAI 2026.
• [05. 2026] Two papers got accepted to ICML 2026 and IEEE Access.
• [04. 2026] Joined NTU as a Postdoctoral Researcher.
• [03. 2026] Joined UNIST as a Postdoctoral Researcher.
• [02. 2026] Successfully awarded my Ph.D. from Seoul National University.
• [11. 2025] Two papers got accepted to KDD 2026 and Engineering Applications of Artificial Intelligence.
• [09. 2025] One paper got accepted to NeurIPS 2025.
• [08. 2025] Selected as a Youlchon AI Star, recipient of the Youlchon AI Scholarship.

Selected Publications

Conference Safe Few-Step Generation via Velocity Editing

Yujin Choi, Jaehong Yoon^†

To appear NeurIPS 2026

Paper arXiv Code Project

Journal Multiple Hyperplanes with Dual Encoding Support Vector Machine for Industrial Anomaly Detection

Yujin Choi, Jinseong Park, Youngjoo Park, Jaewook Lee^†

To appear Top 5% IEEE Transactions on Industrial Informatics

Journal Differentially Private Upsampling for Enhanced Anomaly Detection in Imbalanced Data

Yujin Choi, Jinseong Park, Youngjoo Park, Jaewook Lee, Junyoung Byun^†

Top 5% Engineering Applications of Artificial Intelligence

Paper BibTeX

Conference Safeguarding Privacy of Retrieval Data against Membership Inference Attacks: Is This Query Too Close to Home?

Yujin Choi^*, Youngjoo Park^*, Junyoung Byun, Jaewook Lee, Jinseong Park^†

EMNLP Findings 2025

Paper Code BibTeX

Journal Temporal consistency ensemble empirical mode decomposition for forecasting practical metal price

Yujin Choi, Dongbin Kim, Jaewook Lee^†

Top 5% Engineering Applications of Artificial Intelligence

Paper BibTeX

Conference Fair Sampling in Diffusion Models through Switching Mechanism

Yujin Choi^*, Jinseong Park^*, Hoki Kim, Jaewook Lee, Saerom Park^†

AAAI 2024

Paper arXiv Code BibTeX

See the full list or my Google Scholar profile.