Skip to main content

Youngdae Kim

Ulsan National Institute of Science and Technology · Engineering

About the Lab

Professor Youngdae Kim's research lab specializes in computational science and engineering, with a focus on advancing autonomous systems and data-driven modeling for complex real-world applications. The lab develops cutting-edge reinforcement learning algorithms for autonomous underwater vehicles (AUVs), emphasizing dynamic environment navigation, obstacle avoidance, and optimal path planning. It also conducts large-scale human genetic studies to address health disparities through diverse population genomics, and contributes to high-performance computing by designing proxy applications for exascale computing initiatives. The integration of AI, systems biology, and computational modeling defines the lab’s interdisciplinary approach.

autonomous underwater vehiclesreinforcement learninggenomic risk lociproxy applicationscomputational modeling

Research Overview

Papers
9
Total Citations
410
Papers (5y)
9
Primary Field
Engineering

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
9total
2021
2022
2024
2025
2026
Citations per year (5y)
410total
20212022202420252026

Selected Papers

9
1
Article|362 citations·2024
Diversity and scale: Genetic architecture of 2068 traits in the VA Million Veteran Program
Anurag Verma, Jennifer E. Huffman, Alex A Rodriguez, Mitchell Conery, Molei Liu, Yuk‐Lam Ho, Youngdae Kim, David Heise, Lindsay Guare, Vidul Ayakulangara Panickan, Helene Garcon, Franciel Linares
SJR Q1ScienceOA

One of the justifiable criticisms of human genetic studies is the underrepresentation of participants from diverse populations. Lack of inclusion must be addressed at-scale to identify causal disease factors and understand the genetic causes of health disparities. We present genome-wide associations for 2068 traits from 635,969 participants in the Department of Veterans Affairs Million Veteran Program, a longitudinal study of diverse United States Veterans. Systematic analysis revealed 13,672 ge

GeneticsBiochemistry, Genetics and Molecular Biology
2
Article|34 citations·2022
A reinforcement learning approach to parameter selection for distributed optimal power flow
Sihan Zeng, Alyssa Kody, Youngdae Kim, Kibaek Kim, Daniel K. Molzahn
SJR Q1Electric Power Systems ResearchOA
Electrical and Electronic EngineeringEngineering
3
Article|12 citations·2022
GPU-accelerated DNS of compressible turbulent flows
Youngdae Kim, Debojyoti Ghosh, Emil M. Constantinescu, Ramesh Balakrishnan
SJR Q1Computers & FluidsOA
Computational MechanicsEngineering
4
report|2 citations·2022
FY22 Proxy App Suite Release
The ECP Proxy App Team, Jeanine Cook, Omar Aaziz, Yuri Alexeev, Ramesh Balakrishnan, Graham D. Fletcher, Christoph Junghans, Youngdae Kim, Nevin Liber, G. Liu, Amanda Lund, Álvaro Vázquez Mayagoitia
OA

The FY22 Proxy App Suite Release milestone includes the following activities: Curate a collection of proxy applications that represents the breadth of ECP applications, including application domains, programming models, supporting libraries, numerical methods, etc. Identify gaps in coverage and work with application teams to commission or develop proxies to cover gaps. From within this collection, designate the ”ECP Proxy Application Suite” of 10–15 proxies that balance breadth of coverage with

Information Systems and ManagementDecision Sciences
5
Article|0 citations·2025
Leveraging GPU Batching for Scalable Nonlinear Programming through Massive Lagrangian Decomposition
Youngdae Kim, François Pacaud, Michel Schanen, Kibaek Kim, Mihai Anitescu
SJR Q1SIAM Journal on Scientific Computing
Computational MechanicsEngineering
6
Article|0 citations·2025
Reinforcement Learning-Based Autonomous Underwater Vehicle Waypoint Generation Algorithm in Dynamic Environments
Emily Jimin Roh, Hyunsoo Lee, Il-Seok Song, Seunghwan Kim, Youngdae Kim, Soohyun Park, Joongheon Kim
SJR Q4The Journal of Korean Institute of Communications and Information Sciences

해양 과학 및 군사 작전에 대한 수요가 증가함에 따라 자율 수중 차량(autonomous underwater vehicle, AUV)의 중요성이 점차 커지고 있다. AUV는 유연한 각도 변화를 바탕으로 다양한 임무에서 성공률 높은 제어를 달성할 수 있다. 그러나 대부분의 기존 연구는 주로 단순한 환경에서의 실험과 AUV 작전에서의 고유한 방향성을 간과한다. 이에 본 논문은 AUV의 방향 정책 강화학습 알고리즘(directional policy reinforcement learning, DPRL)을 통한 변침점 생성 알고리즘 기반의 AUV 임무 수행 전략을 제안한다. 이때 장애물의 크기 및 위치, 목표물의 위치, 그리고 목표물에 대한 접근 각도를 나타내는 충격 각도를 무작위로 설정한 동적인 환경에서의 실험 결과를 통하여 본 알고리즘의 우수성을 입증한다.

Computer Vision and Pattern RecognitionComputer Science
7
Article|0 citations·2026
Fitting Factor Estimation for the Yaw of Repose Based Modified Point-Mass Trajectory Model
Hyeon-Ki Jeong, Hyo-Jung Kim, Duhee Han, Youngdae Kim, Chang-Kyung Ryoo
Journal of the Korea Institute of Military Science and TechnologyOA

This study presents a fitting factor calibration method to enhance the accuracy and consistency of STANAG 4355 Modified Point-Mass Model trajectory simulations. Conventional approaches, typically based on Mach number or quadrant elevation, focus on matching only the impact range, whereas the proposed method fits the entire trajectory shape, including the maximum ordinate and its corresponding range at the trajectory apex. A new fitting scheme incorporating the yaw of repose and projectile veloci

Aerospace EngineeringEngineering
8
Article|0 citations·2025
A Reinforcement Learning-Based Path Optimization for Autonomous Underwater Vehicle Mission Execution in Dynamic Marine Environments
Hyo‐Won Ahn, Seong Sik Ahn, Eun-Hwan Roh, Il-Seok Song, Jung Ah Kwon, Sung-Min Kwon, Youngdae Kim, Soohyun Park, Joongheon Kim
Journal of KIISE

본 논문은 동적 해양 환경에서 AUV (Autonomous Underwater Vehicle)의 자율 임무 수행 및 경로 최적화를 위해 AOPF (Autonomous Underwater Vehicle Optimal Path Finder) 알고리즘을 제안한다. 제안한 알고리즘은 PPO (Proximal Policy Optimization) 기반 강화학습 기법과 3-degree-of freedom (DOF) 모델을 적용하여 장애물 회피와 목표 도달의 균형을 달성하며, 기존 DDPG (Deep Deterministic Policy Gradient) 알고리즘 대비 빠른 수렴과 높은 임무 성능을 보인다. 실험 결과, 제안 기법은 안정적 학습과 효율적 경로 생성을 확인하였다. 본 연구는 동적 해양 환경에서 AUV의 자율 임무 수행을 위한 새로운 강화학습 기반 제어 방법을 제시하며, 실제 해양 적용 및 다중 AUV 협력 제어와 같은 확장 가능성에 관해 논의한다.

Ocean EngineeringEngineering
9
report|0 citations·2021
FY21 Proxy App Suite Release: Report for ECP Proxy App Project Milestone ADCD504-12
The ECP Proxy App Team, David F. Richards, Omar Aaziz, Yuri Alexeev, Ramesh Balakrishnan, Jeanine Cook, Graham D. Fletcher, Christoph Junghans, Youngdae Kim, Jeffrey Kuehn, Nevin Liber, G. Liu
OA

The FY21 Proxy App Suite Release milestone includes the following activities: Curate a collection of proxy applications that represents the breadth of ECP applications, including application domains, programming models, supporting libraries, numerical methods, etc. Identify gaps in coverage and work with application teams to commission or develop proxies to cover gaps. From within this collection, designate the "ECP Proxy Application Suite" of 12-15 proxies that balance breadth of coverage with

Computer Networks and CommunicationsComputer Science

Research Areas

Computational MechanicsGeneticsElectrical and Electronic EngineeringInformation Systems and ManagementComputer Vision and Pattern RecognitionAerospace Engineering

Dive deeper into Youngdae Kim's research on Nubint

Open this lab's papers in the app to read with AI, summarize, and cite in your writing.