Hi! I am a fifth-year Ph.D. student in the Department of Industrial Engineering and Operations Research at Columbia University, and I am fortunate to be advised by Prof. Adam Elmachtoub. My research interest lies in fairness and pricing.

I received my MS degree in Industrial and Systems Engineering from Korea Advanced Institute of Science and Technology (KAIST) where I was advised by Prof. Il-Chul Moon. Prior to that, I received my BS degree in Industrial and Systems Engineering and Electrical Engineering from KAIST.

Research

Conference & Journal Papers

1. Fair Fares for Vehicle Sharing Systems [code]
   Adam N. Elmachtoub and Hyemi Kim
   Operations Research, Forthcoming
   The 8th ACM Conference on Fairness, Accountability, and Transparency (FAccT), 2025
   Finalist, INFORMS DEI Best Student Paper Award, 2024
   Finalist, INFORMS Transportation Science and Logistics Society Best Student Paper Award, 2024
   

2. Counterfactual Fairness with Disentangled Causal Effect Variational Autoencoder [code]
   Hyemi Kim, Seungjae Shin, JoonHo Jang, Kyungwoo Song, Weonyoung Joo, Wanmo Kang, Il-Chul Moon
   Association for the Advancement of Artificial Intelligence 2021
   

3. Black-Box EM Algorithm for Estimating Latent States of High-Speed Vehicles
   Yoon-Yeong Kim, Hyemi Kim, WonSung Lee, Han-Lim Choi, Il-Chul Moon
   American Institute of Aeronautics and Astronautics
   

4. Neutralizing Gender Bias in Word Embedding with Latent Disentanglement and Counterfactual Generation
   Seungjae Shin, Kyungwoo Song, Joonho Jang, Hyemi Kim, Weonyoung Joo, Il-Chul Moon
   Findings of Empirical Methods in Natural Language Processing (Findings of EMNLP) 2020
   

5. Deep Generative Positive-Unlabeled Learning under Selection Bias
   ByeongHu Na, Hyemi Kim, Kyungwoo Song, Weonyoung Joo, Yoonyeong Kim, Il-Chul Moon
   Conference on Information and Knowledge Management (CIKM) 2020
   

Workshop Paper

1. Improving Group-based Robustness and Calibration via Ordered Risk and Confidence Regularization
   Seungjae Shin, Byeonghu Na, HeeSun Bae, JoonHo Jang, Hyemi Kim, Kyungwoo Song, Youngjae Cho, Il-chul Moon
   ICML 2022: Workshop on Spurious Correlations, Invariance and Stability