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Seungyeop Lee

Combinatorial Optimization Researcher

Education

M.S./Ph.D. integrated student in Industrial & Management Engineering

POSTECH
2020 - Present

B.S. in Mathematics

POSTECH
2015 - 2020

Languages

  • Korean (Native)
  • English (Intermediate)

Interests

  • Combinatorial Optimization
  • Vehicle Routing Problems
  • Simulation Optimization
  • Artificial Intelligence
  • Judo
  • Football
  • Surfing

Profile

I am an integrated M.S./Ph.D. student in Industrial & Management Engineering at POSTECH with a focus on combinatorial optimization, including vehicle routing problems, logistics, facility location, and machine scheduling. To facilitate my research, I employ various methodologies, including but not limited to integer programming, (meta) heuristics, and hybridization with artificial intelligence. I am open to collaborating with good research partners, so please don’t hesitate to contact me. :)

Projects

Develop World-best AIM(AI+Matheuristics) based Routing Algorithms for Very Large Scale Waste Collection Problems - National Research Foundation of Korea (NRF). (2022 - Present)
Development of Intelligent Traffic Signal Control Algorithm for Multi Intersections (3rd Stage) - ETRI. (2023 - 2023)
Development of Intelligent Traffic Signal Control Algorithm for Multi Intersections - ETRI. (2021 - 2021)
Development of an optimal hydrogen supply chain model for hydrogen production facilities and refueling stations - KETEP. (2020 - 2022)
Development of Intelligent Traffic Signal Control Algorithm - ETRI. (2020 - 2020)
Development of spatial arrangement algorithm of arbitrary 2D polygon and 3D block shape - Korea Shipbuilding & Offshore Engineering Co. (2020 - 2021)
Traffic Signal Optimization and Autonomous Vehicle Traffic Control for Smart Intersection - National Research Foundation of Korea (NRF). (2019 - 2022)

Experiences

Visiting Scholar

June 2024 - August 2024
Distributed Control Laboratory, School of Industrial Engineering, Purdue University

Researched on the orbital vehicle routing problem under the guidance of Prof. Seokcheon Lee.

Teaching Assistant

Fall 2022
Information System Technology

Teaching Assistant

Spring 2020
Discrete Optimization

Session Chair

November 13, 2020
2020 Fall Conference of KIIE(Seoul National University of Science & Technology, Seoul)

Managed a session ‘The 4th Industrial Revolution/Industrial AI (6)’.

Integer Programming and Combinatorial Optimization (IPCO)

2021 Summer School

May 19-21, 2021
Georgia Institute of Technology, Atlanta, GA, USA (online)

MIT Professional Education Short Programs

August 3-7, 2020
Transportation Networks and Smart Mobility - Methods and Solutions (Live virtual)

Research Intern

January 2019 - December 2019
Logistics Laboratory, POSTECH

Researched on optimal traffic signal timing of single intersection based on simulation and developed decision support system SITE.

Backend Developer (Internship)

January 2018 - June 2018
Penta Security, Seoul

Developed back-end web service and managed server for web application firewall.

Application Developer (Internship)

July 2016 - August 2016
Exem, Pohang

Developed big data operation, management and analysis integrated platform Flamingo.

Publications

  • A Simulation Optimization Framework for Traffic Signal Control Problem Using a DNN-based Metamodel
    • S. Lee, Y. Shin, D. Choi*, B. Kim
    (Working Paper, IEEE Transactions on Vehicular Technology under 3rd review)
  • Two-Stage Algorithm for Traffic Signal Optimization and Web Service Ssytem Development
    • S. Lee, M. Eom, B. Kim*
    IET Intelligent Transport Systems (SCIE). (2024)
  • Site and Capacity Selection for On-Site Production Facilities in a Nationwide Hydrogen Supply Chain Deployment Plan
    • S. Lee, H. Kim, B. Kim*, M. Song, D. Lee, H. Ryu
    International Journal of Hydrogen Energy (SCIE). (2024)
  • A web-based decision support system (DSS) for hydrogen refueling station location and supply chain optimization
    • H. Ryu, D. Lee, J. Shin, M. Song*, S. Lee, H. Kim, B. Kim
    International Journal of Hydrogen Energy (SCIE). (2023)
  • Optimization of hydrogen refueling stations deployment and supply chain networks: current status and research suggestions
    • H. Ryu, B. Kim*, M. Song, H. Kim, D. Lee, S. Lee, J. Shin, Y. Yoo, S. Kim, H. Lee
    Journal of the Korean Institute of Industrial Engineers (KCI). (2022)
  • Waste Collection Problem with Turn Penalty, Balanced Clustering, and Visual Attractiveness
    • S. Lee, B. Kim
    2024 INFORMS Annual Meeting (Seattle Convention Center, Washington, USA). (Oct 20-23, 2024)
  • Comparison of traffic signal synchronization in multi-intersections
    • J. Kim, J. Na, H. Kim, S. Lee, B. Kim
    2024 Spring Joint of KIIE/KORMS (Yeosu Expo)
  • Comparison of Traffic Signal Optimization Algorithms at Multiple Intersections
    • J. Kim, H. Kim, S. Lee, B. Kim, H. Park, D. Choi
    2023 Fall Conference of KIIE (UNIST, Ulsan). (Nov 2-3, 2023)
  • A Nationwide Hydrogen Supply Chain Deployment Plan for a Short-term Hydrogen Supply Shortage
    • S. Lee, H. Kim, B. Kim
    2023 INFORMS Annual Meeting (Pheonix Convention Center, Arizona, USA). (Oct 15-18, 2023)
  • A Hybridization of DNN-based Meta Model and Tabu Search for Single Intersection Traffic Signal Optimization
    • S. Lee, Y. Shin, B.Kim, D. Choi
    2022 INFORMS Annual Meeting (Indiana Convention Center, Indiana, USA). (Oct 16-19, 2022)
  • Metaheuristic placement algorithm of 3D blocks with arbitrary shapes for shipbuilding industry
    • S. Lee, B. Kim, Y. Kim, S. Seong
    2022 KIIE/KORMS Spring Joint Conference (Jeju, Korea). (June 1-4, 2022)
  • Decision support system (DSS) for optimization of hydrogen refueling stations deployment and supply chain networks
    • D. Lee, H. Ryu, J. Shin, S. Lee, H. Kim, B. Kim, M. Song, Y. Yu, S. Kim, H. Lee
    2022 KIIE/KORMS Spring Joint Conference (Jeju, Korea). (June 1-4, 2022)
  • Optimization of hydrogen refueling stations deployment and supply chain networks: current status and research suggestions
    • H. Ryu, B. Kim*, M. Song, H. Kim, D. Lee, S. Lee, J. Shin, Y.-D. Yoo, S. K., H. Lee
    Journal of the Korean Institute of Industrial Engineers, 48(2), 211-226. (April, 2022)
  • Intelligent Intersection Traffic Signal Control Research 2: Reinforcement Learning-based Multi Intersection Traffic Signal Optimization
    • H.Park, S. Lee, Y.Shin, D.Choi, B.Kim, J.Lee
    2021 Fall Conference of KIIE (Dongguk University Seoul)
  • Intelligent Intersection Traffic Signal Control Research 1: Metaheuristic-based Multi Intersection Traffic Signal Optimization
    • S. Lee, H.Park, Y.Shin, B.Kim, D.Choi, J.Lee
    2021 Fall Conference of KIIE (Dongguk University Seoul)
  • Hydrogen refueling stations deployment plan for hydrogen mobility
    • H.Kim, H. Ryu, M. Eom, J. Shin, S. Lee, D. Lee, B. Kim, M. Song, Y. Yu, S. Kim, H. Lee
    2021 KIIE/KORMS Joint Conference (jeju). (June 2-4, 2021)
  • Intelligent Intersection Traffic Signal Control Research 2: Reinforcement Learning based Optimization Approach
    • H. Park, S. Lee, H. Ko, Y. Shin, D. Choi, B. Kim, D. Kim
    2020 Fall Conference of KIIE(Seoul National University of Science & Technology, Seoul). (Nov 13, 2020)
  • Intelligent Intersection Traffic Signal Control Research 1: Simulation, Metaheuristic, and Deep Neural Network based Optimization Approach
    • S. Lee, Y. Shin, M. Eom, H. Ko, H. Park, B. Kim, D. Choi, D. Kim
    2020 Fall Conference of KIIE(Seoul National University of Science & Technology, Seoul). (Nov 13, 2020)

    Patents & Software Program

    (Patent) Method of Optimal Planning of Hydrogen Supply Chain Network with Additional On-site Hydrogen Refueling Stations - No: 10-2022-0125367 (2022.09.30)

    (Software Program) Decision Support System for Hydrogen Supply Chain Management - No: C-2022-052519 (2022.12.12)

    Awards & Honors

    POSTECHIAN Fellowship - POSTECH (Spring 2024)

    Encouragement Prize, 2023 New Industry Intellectual Property Idea Contest - POSTECH New Industry Intellectual Property Convergence Talent Development Project (2024.02.05)

    Second Prize, 2022 New Industry Intellectual Property Idea Contest - POSTECH New Industry Intellectual Property Convergence Talent Development Project (2023.02.03)

    Skills & Proficiency

    C++

    Python

    CPLEX

    GUROBI

    SUMO

    C, C#

    PHP, JavaScript