Sohyun An

Biography

I’m a Ph.D. student in the Computational Machine Learning Group at UCLA, under the supervision of Prof. Cho-Jui Hsieh. Previously, I was an M.S. student in the Machine Learning and Artificial Intelligence (MLAI) Lab at KAIST AI, supervised by Prof. Sung Ju Hwang.

Education

PhD in Computer Science, Sep 2024 - Present
University of California, Los Angeles (UCLA)
MS in Artificial Intelligence, Aug 2022 - Aug 2024
Korea Advanced Institute of Science and Technology (KAIST)
BS in Material Science and Engineering (Summa Cum Laude), Mar 2017 - Aug 2021
Seoul National University (SNU)

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Tong Xie, Yuanhao Ban, Yunqi Hong, Sohyun An, Yihang Chen, Cho-Jui Hsieh (2026). A Unifying Lens on Supervised Fine-Tuning Through Target Distribution Design. arXiv.

Sohyun An, Hayeon Lee, Shuibenyang Yuan, Chun-Cheng Jason Chen, Vijai Mohan, Cho-Jui Hsieh, Alexander Min (2026). FRESCO: Benchmarking and Optimizing Re-rankers for Evolving Semantic Conflict in Retrieval-Augmented Generation. arXiv.

Hyomin Lee, Sangwoo Park, Yumin Choi, Sohyun An, Seanie Lee, Sung Ju Hwang (2026). T-MAP: Red-Teaming LLM Agents with Trajectory-aware Evolutionary Search. arXiv.

Yu Zhou*, Sohyun An*, Haikang Deng*, Da Yin, Clark Peng, Cho-Jui Hsieh, Kai-Wei Chang, Nanyun Peng (2025). DialectGen: Benchmarking and Improving Dialect Robustness in Multimodal Generation. ResponsibleFM @ NeurIPS 2025.