Yongkyu Cho's Homepage

Yongkyu Cho, Ph.D. [YouTube][Math Genealogy][Google Scholar]

Assistant Professor

Systems Operations and Management Engineering Laboratory

Department of Industrial and Management Engineering, Kyonggi University

Room 517, Engineering Building 2, 154-42, Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do, Korea, 16227

E-mail: yongkyu.cho (at) kgu (dot) ac (dot) kr

Tel : +82-31-249-9654

Fax: +82-31-249-9654

Research Interests

Operations Research Applications
Decision Making under Uncertainty
Data-Driven Operations Management

Current Position

Kyonggi University (KGU); 2024.03 - Present
- Assistant Professor in the Department of Industrial and Management Engineering

Education

Ph.D. in Industrial and Management Engineering; 2019
- Pohang University of Science and Technology (POSTECH)
  - Dissertation: "Resource Management in Data Centers for Energy-Efficiency, Time-Stable Performance, and Quality-of-Service"
  - Adviser: Dr. Ko, Young Myoung
B.S. in Industrial and Management Engineering; 2013
- Hanyang University ERICA Campus
  - Honor: Summa Cum Laude (ranked 1st out of 41)

Selected Experience

Kangnam University (KNU); 2021.03 - 2024.02
- Assistant Professor in the Division of AI Convergence Engineering
Samsung Electronics; 2019.05 - 2021.02
- Staff Engineer in the Networks Business Division
Argonne National Laboratory; 2018.02 - 2018.09
- Visiting Student in the Mathematics and Computer Science Division

Working Papers

Cho, Y., Ko, Y. M., and Kim, K.*, "SIPLIB.jl: Julia package for stochastic integer programming test problem library," in progress [preprint]
Cho, Y. and Baik, S. M.*, "Reliability assessment of circular k-out-of-n: G balanced systems in a shock environment," in progress

Publications (SCIE)

Cho, Y., Baik, S. M., and Ko, Y. M.* (2023), "Reliability improvement of circular k-out-of-n: G balanced systems through center of gravity," IEEE Access (SCIE), 11, 91407-91422 [preprint][article]
Oh, Y. and Cho, Y.* (2022), "Scheduling of build and post processes for decomposed parts in additive manufacturing," Additive Manufacturing (SCIE), 59, 1-13. [preprint][article]
Cho, Y. and Ko, Y. M.* (2022), "Power- and QoS-aware job assignment with dynamic speed scaling for cloud data center computing," IEEE Access (SCIE), 10, 38284-38298 [article]
Cho, Y. and Ko, Y. M.* (2020), "Stabilizing the virtual response time in single-server processor sharing queues with slowly time-varying arrival rates," Annals of Operations Research (SCIE), 293, 27-55. [preprint][article]
Cho, Y. and Ko, Y. M.* (2018), "Energy efficiency of data center operating practices: Server clustering, powering on/off, and bang-bang control," Networks (SCIE), 71(2), 107-119. [article]
Ko, Y. M.* and Cho, Y. (2014), "A distributed speed scaling and load balancing algorithm for energy efficient data centers," Performance Evaluation (SCIE), 79, 120-133. [article]

Publications (Others)

Choi, J., Cho, Y., Kim, Y., Kim, Y., and Ji, B.* (2023), "Machine learning-based slope failure prediction model considering uncertainty of prediction," Engineering Proceedings (SCOPUS), 36(6), 1-4. [article]
Cho, Y.* (2022), "Using Python programming language for teaching Industrial Engineering subjects: A case study on Engineering Economy," Journal of Practical Engineering Education (KCI), 14(2), 245-258. [video][article]

Conference Presentations

Cho, Y., Ko, Y. M., and Kim, K., "SIPLIB.jl: Julia package for stochastic integer programming test problem library," Joint Conference of KORMS/KIIE/KSS, Yeosu, Korea, May 2024 [slides]
Choi, J., Cho, Y., Kim, Y., Kim, Y., and Ji, B., "Machine learning-based slope failure prediction model considering uncertainty of prediction," MAIREINFRA, Honolulu, HI, U.S.A., August 2023 [slides]
Ko, Y. M., Cho, Y., and Baik, S. M., "Reliability improvement of circular k-out-of-n: G balanced systems through center of gravity," INFORMS Conference on Quality, Statistics, and Reliability, Raleigh, NC, U.S.A., June 2023 [slides]
Cho, Y., Baik, S. M., and Ko, Y. M., "Reliability improvement of circular k-out-of-n: G balanced systems through center of gravity," Joint Conference of KIIE/KORMS, Jeju, Korea, June 2023 [slides]
Cho, Y. and Oh, Y., "Scheduling of build and post processes for decomposed parts in additive manufacturing," Joint Conference of KORMS/KIIE, Jeju, Korea, June 2022 [slides]
Cho, Y., "An energy-efficient operation of computing resources in cloud data centers," IFORS Conference, Seoul, Korea, August 2021 [slides]
Cho, Y., Kim, K., Luedtke, J., and Linderoth, J., "SIPLIB 2.0: Stochastic integer programming library version 2," INFORMS Annual Meeting, Phoenix, AZ, U.S.A., November 2018 [slides]
Cho, Y. and Ko, Y. M., "Service rate controls for sojourn time stabilization in single server processor sharing queues with slowly time-varying arrival rate," European Conference on Queueing Theory, Jerusalem, Israel, July 2018 [slides]
Cho, Y. and Ko, Y. M., "An energy efficient speed scaling and workload routing algorithm for large-scale data centers," INFORMS Annual Meeting, Houston, TX, U.S.A., October 2017 [slides]
Cho, Y. and Ko, Y. M., "A distributed server provisioning algorithm for large-scale data centers with time-varying stochastic user requests," Joint Conference of KIIE/KORMS/KSS, Yeosu, Korea, April 2017
Cho, Y. and Ko, Y. M., "Energy efficiency of data center operating practices: Server clustering, powering on/off without speed scaling, and bang-bang control," INFORMS Annual Meeting, Nashville, TN, U.S.A., November 2016 [slides]
Cho, Y. and Ko, Y. M., "An MIP for energy-efficient data center: Are servers clustered across applications?," INFORMS Telecommunications Conference, Boca Raton, FL, U.S.A., March 2016
Cho, Y. and Ko, Y. M., "An MIP for energy-efficient data center and its solution approach using decomposition and heuristic method," KORMS Conference, Seoul, Korea, October 2015

Teaching Experience

Instructor (at KGU); 2024 - Present
- Engineering Economic Analysis; 2024S
- Operations Reserach I; 2024F
- Operations Research II; 2024S
- Decision Making and Analysis; 2024F
Instructor (at KNU); 2021 - 2023
- Probability and Statistics for Engineers; 2023S
- Applied Statistics for Engineers; 2022F, 2023F
- Engineering Accounting; 2023S
- Engineering Economy; 2022F, 2023F
- HCI with Data Visualization; 2021S, 2022S, 2023S
- Human Factors Engineering; 2021S, 2022S, 2022F, 2023S
- Management of Technology; 2021F, 2022F
- Introduction to Industrial Engineering; 2023S
- Introduction to Creative Engineering; 2021F, 2023F
- Capstone Design Project in Industrial Engineerng; 2021F, 2022F, 2023F
Teaching Assistant (at POSTECH); 2013 - 2016
- Queueing Theory; 2014F, 2016F
- Applied Stochastic Processes; 2015S
- Operations Research II; 2015F
- Probability and Statistics for Engineers; 2013S