I design machine learning algorithms for decision-making and control in real-world systems by finding where an existing framework breaks down and building algorithms to fix it, in problems ranging from robotics applications to climate modeling. One direction Iโ€™m currently excited about: adaptive RL policies that let control algorithms respond quickly when dynamics shift, from simulation to the real world.

I am a Ph.D. student in Computer Science at Cornell University, working with Sarah Dean. Before joining Cornell, I was a research scientist at the Korea Institute of Science and Technology (KIST). I received my M.S. from Korea University and my B.S. from the University of Seoul.

๐Ÿ“– Educations

  • Ph.D. Student in Computer Science, Aug. 2024 - Present
  • M.S. in Electrical and Computer Engineering, Mar. 2021 - Aug. 2023
    • Major : Control, Robotics and Systems. Korea University (GPA: 4.39/4.5)
    • Research Scholarship from Hyundai Motor Group, Mar. 2021 - Dec. 2022,
  • B.S. in Electrical and Computer Engineering, Mar. 2017 - Feb. 2021
    • University of Seoul. (GPA: 4.0/4.5)
    • Research Scholarship from Hyundai Motor Group, Sep. 2019 - Dec. 2020

๐Ÿ“ Publications

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Mind the Residual Gap: Probabilistic Downscaling under Real-World Bias

  • Identifies residual target misspecification as a fundamental source of under-dispersion in meanโ€“residual probabilistic downscaling under real-world bias.
  • Proposes ReMatch, combining deterministic mean regression with residual diffusion and optimal-transport-based residual distribution matching.
  • In publication.
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Sparse-to-Field Reconstruction via Stochastic Neural Dynamic Mode Decomposition

  • Proposes a probabilistic DMDโ€“Neural ODE model that reconstructs continuous spatiotemporal fields from only 10% sparse observations with uncertainty quantification.
  • Recovers interpretable Koopman modes and continuous-time eigenvalues, learns distributions over dynamics across realizations.
  • Published in the Proceedings of L4DC 2026, project website
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Single-Instance Sampling for Computationally Efficient and Accurate Real-Time Task Space MPPI Control

  • Real-time MPPI controller that achieves high-frequency task-space manipulation by redesigning sampling and horizon structures.
  • Establish that constant-perturbation rollouts remain theoretically compatible with MPPI weighting.
  • Published in the Proceedings of IEEE Transactions on Robotics, supplementary video
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Distilling Realizable Students from Unrealizable Teachers

  • Policy distillation under asymmetric imitation learning setting.
  • Propose two new IL/RL algorithms robust to state aliasing.
  • Published in the Proceedings of IROS 2025, project website
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Subspace-wise Hybrid RL for Articulated Object Manipulation

  • Develop skills for operating equipment (e.g., valve, switch, gear leverโ€ฆ) at industrial sites with a manipulator.
  • Learn skills while minimizing human-engineered features using reinforcement learning.
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Whole-body motion planning of dual-arm mobile manipulator for compensating for door reaction force

  • Address challenges of door traversal motion planning
  • Unified framework for door traversal, from approaching, opening, passing through, and closing the door with dual-armed mobile manipulator
  • Decision making for optimal contact point planning with RL.
  • Presented in ICRA 2025 workshop
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A reinforcement learning approach to dynamic trajectory optimization with consideration of imbalanced sub-goals in self-driving vehicles

  • Challenge to skewed sub-goal distribution for goal-conditioned RL controller.
  • Enable adaptive sub-goal planning and efficient reward learning via MPC-synchronized rewards.
  • Published in the Proceedings of Applied Sciences
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Reinforcement Learning for Autonomous Vehicle using MPC in Highway Situation.

  • Addresses the challenge of reward shaping for continuous RL controllers by using MPC reference.
  • Published in the Proceedings of ICEIC 2022

๐ŸŽ– Honors and Awards

  • 2025 IROS-SDC Travel Award.
  • 2024 Student Travel Grant, ICRA 2024 (MOMA.v2 Workshop).
  • Sep. 2018 - Dec. 2022, Full Scholarship for Selected Research Student, Hyundai Motor Company.
  • May 2022, 10th F1TENTH Autonomous Racing Grand Prix, 3rd Place, ICRA 2022.
  • Spring 2018, Scholarship for Excellent Achievement, University Of Seoul.
  • Jul. 2018, 2018 Intelligent Model Car Competition, 3rd Place, Hanyang University.
  • Jul. 2017, 14th Microrobot Competition, Special Award for Women Engineer, Dankook University.

๐Ÿ’ป Work Experience