Yujin Choi

Yujin Choi

she/her

Postdoctroal Researcher at NTU/UNIST

About Me

I am 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, attacks/defense) and fairness.
  • Generative Models: Enhancing safety and utility in Diffusion models, Flow matching, and Large Language Models (LLMs).

Education

News

  • [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.
  • [08. 2025] One paper got accepted to EMNLP Findings 2025.
  • [06. 2025] One paper got accepted to Engineering Applications of Artificial Intelligence.
Show older news (10)
  • [01. 2025] One paper got accepted to Pattern Recognition.
  • [06. 2024] One paper got accepted to CVPR 2024.
  • [02. 2024] One paper got accepted to AAAI 2024.
  • [01. 2024] One paper got accepted to Expert Systems with Applications.
  • [12. 2023] One paper got accepted to NeurIPS 2023.
  • [09. 2023] Selected for the Doctoral Student Research Grant (Ministry of Science and ICT, Korea) with the project Safe Generative Model (2023-2025).
  • [09. 2023] One paper got accepted to Applied Soft Computing.
  • [07. 2023] One paper got accepted to ICML 2023.
  • [05. 2023] One paper got accepted to Applied Intelligence.
  • [01. 2023] Two papers got accepted to Information Sciences and IEEE Access.

Selected Publications

Differentially Private Upsampling for Enhanced Anomaly Detection in Imbalanced Data
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
Safeguarding Privacy of Retrieval Data against Membership Inference Attacks: Is This Query Too Close to Home?
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
Temporal consistency ensemble empirical mode decomposition for forecasting practical metal price
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
In-distribution public data synthesis with diffusion models for differentially private image classification
Conference In-distribution public data synthesis with diffusion models for differentially private image classification
Jinseong Park*, Yujin Choi*, Jaewook Lee†
CVPR 2024
Paper Code BibTeX
Fair Sampling in Diffusion Models through Switching Mechanism
Conference Fair Sampling in Diffusion Models through Switching Mechanism
Yujin Choi*, Jinseong Park*, Hoki Kim, Jaewook Lee, Saerom Park†
AAAI 2024
Paper Code BibTeX

See the full list or my Google Scholar profile.