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Conference Papers & Abstracts

(* indicates a student or post doc co-author at the time of performing the research)

Soykan, B.* and Rabadi, G. (2023) “Optimizing Multi Commodity Flow Problem Under Uncertainty: A Deep Reinforcement Learning Approach,” 2023 International Conference on Machine Learning and Applications (ICMLA), Jacksonville, FL, USA, 2023, pp. 1267-1272, doi:10.1109/ICMLA58977.2023.00191.

Soykan, B.*, Abdelnabi, A.B and Rabadi, G. (2023) “Adaptive Scheduling In Dynamic Environments: A Data-Driven Approach With Digital Twins And Deep Reinforcement Learning,” 2023 IEEE 3rd International Conference on Digital Twins and Parallel Intelligence (DTPI), Orlando, FL, USA, 2023, pp. 1-6, doi:10.1109/DTPI59677.2023.10365465

A. Tolk, P. Barry, M. L. Loper, G. Rabadi, W. T. Scherer and L. Yilmaz (2023) “Chances and Challenges of ChatGPT and Similar Models for Education in M&S,” 2023 Winter Simulation Conference (WSC), San Antonio, TX, USA, 2023, pp. 3332-3346, doi:10.1109/WSC60868.2023.10408241

Kotachi, M*, Rabadi, G., Seck, M., Msakni, M., Al-Salem, M., and Diabat, A. (2018) Sequence-Based Simulation Optimization of Container Terminals, 2018 IEEE Technology and Engineering Management Conference (TEMSCON), June 27 – July 1, 2018, Chicago, Illinois

Al-Doali, Rabadi, G., Seck, M., and Handley, H. (2018) Hybridizing Meta-RaPS with Machine Learning Algorithms, 2018 IEEE Technology and Engineering Management Conference (TEMSCON), June 27 – July 1, 2018, Chicago, Illinois

Msakni, M.K., Al-Salem, M., Rabadi, G., Kotachi, M.*, and Diabat, A. (2018) “Quay Crane Scheduling with Vessel Stability”, Transportation Research Procedia, EURO Mini Conference on Advances in Freight Transportation and Logistics, 7-9 March 2018, Padova, Italy

Kotachi, M.*, Rabadi, G., Msakni, M.K., Al-Salem, M. and Diabat, A. (2016) “A Discrete Event Simulation for the Logistics of Hamad’s Container Terminal of Qatar”, Proceeding of the 2016 Winter Simulation Conference, Washington DC, December 11 – 14, 2016

Msakni, M.K., Al-Salem, M., Diabat, A., Rabadi, G., Kotachi, M. (2016) “An Integrated Quay Crane Assignment and Scheduling Problem Using Branch-and-price”, Proceedings of the 2016 International Conference on Computational Science and Computational Intelligence, Published by IEEE Computer Society Conference Publishing Services, Dec 15 – 17, 2016, Las Vegas, NV

Soykan, B.* and Rabadi, G. (2016) “A Hybrid Metaheuristic Algorithm for Multi-Objective Runway Scheduling Problem in Simulation-based Optimization”, Proceedings of MODSIM World, April 2016, Virginia Beach, Virginia

Arin, A. + and Rabadi, G.* (2015) “Statistical Learning Versus Machine Learning: Integrating Estimation of Distribution Algorithms Versus Q-Learning Into Meta-Raps”, Proceedings of the International Conference on Computers & Industrial Engineering, Metz, France, October 28-30, 2015

Seck, M.*, Rabadi, G., and Koestler, C.+ (2015) “A Simulation-based Approach to Risk Assessment and Mitigation in Supply Chain Networks”, Proceedings of the Complex Adaptive Systems Conference, Nov. 1 –3, 2015, San Jose, California.

Al-Duoli, F.+ and Rabadi, G.* (2014) “Data Mining based Hybridization of MetaRaPS”, Proceedings of Complex Adaptive Systems Conference, 2014, Philadelphia, PA, Nov 3-5

Kotachi, M.+, Rabadi, G.* (2014) “Simulating and Analyzing the Assignment of Cranes to Ships According to Ship Size in a Complex Container Terminal”, Proceedings of the American Society for Engineering Management 2014 International Annual Conference, S. Long, E-H. Ng, and C. Downing eds., Virginia Beach, VA, October 15-18, 2014

Kotachi, M.+, Rabadi, G.*, and Obeid, M. (2013), “Simulation Modeling and Analysis of Complex Port Operations with Multimodal Transportation”, Procedia Computer Science 20 ( 2013 ) 229 – 234, Complex Adaptive Systems, 2013, Baltimore, MD, Nov 13-15

Al-Duoli, F.+ and Rabadi, G.* (2013) “Employing Learning to Improve the Performance of Meta-RaPS”, Procedia Computer Science 20 ( 2013 ) 46 – 51, Complex Adaptive Systems, 2013, Baltimore, MD, Nov 13-15

Hancerliogullari, G.+, Rabadi, G.*, Kharbeche, M., Al-Salem, A. (2012), “Heuristic Algorithms for Aircraft Sequencing Problem”, Proceedings of the 33rd International Annual Conference of the American Society for Engineering Management, Virginia Beach, VA (October 17-20).

Brelsford, J.+ and Rabadi, G.* (2012) “Emergency Room Staff Scheduling Using a Two-Stage Non-linear and 0-1 Integer Programming Model, Proceedings of the 1st  Industrial And Systems Engineering World Conference, P. 22 – 29, Washington, D.C, USA, September 16-18, 2012

Arin, A.+*, and Rabadi, G. (2012) “Meta-RaPS with Q Learning Approach Intensified by Path Relinking for the 0-1 Multidimensional Knapsack Problem”, Proceedings of the 14th International Conference on Artificial Intelligence (ICAI’12), July 16-19, 2012, Las Vegas, USA.

Arin, A.+*, and Rabadi, G. (2012) “Meta-RaPS with Path Relinking for the 0-1 Multidimensional Knapsack Problem”, Proceeding of the 6th IEEE International Conference on Intelligent Systems, Sofia, Bulgaria, September 6-8, 2012

Garcia, C.+, and Rabadi, G.* (2012) “Robust Optimization Models for Volunteer Scheduling”, Proceedings of the 2012 Industrial and Systems Engineering Research Conference G. Lim and J.W. Herrmann, eds., Orlando, FL, May 19 – 23

Rabadi, G.*, Hancerliogullari, G.+, Kharbeche, M., Al-Salem, A. (2012) “Meta-heuristics for Aircraft Arrival and Departure Scheduling on Multiple Runways”, Proceedings of the 2012 Industrial and Systems Engineering Research Conference G. Lim and J.W. Herrmann, eds., Orlando, FL, May 19 – 23

Arin, A.+, Rabadi, G. (2011), “Integrating Machine Learning into Meta-RaPS via Q Learning”, 2nd Annual International Conference on Advanced Topics in Artificial Intelligence, ATAI 2011, November 24-25, SINGAPORE.

Rabadi, G. and Kaylani, H. (2010), “Towards a Center for Modeling and Simulation: The Case for Jordan” in Barjis, J., Narasipuram, M.M., & Rabadi, G. (Eds.) (2010). Proceedings of the 6th International Workshop on Enterprise & Organizational Modeling and Simulation, Hammamet, Tunisia. CEUR-WS, Volume 601, ISSN: 1613-0073, P. 99 – 112

Arnaout, G.+, Rodriguez-Velasquez, E.+, Rabadi, G.*, Musa, R. (2010), “Modeling Cross-Docking Operations using Discrete Event Simulation”, in Barjis, J., Narasipuram, M.M., & Rabadi, G. (Eds.) (2010), Proceedings of the 6th International Workshop on Enterprise & Organizational Modeling and Simulation, Hammamet, Tunisia. CEUR-WS, Volume 601, ISSN: 1613-0073, P. 113 – 120

Rodriguez-Velasquez, E.+, Arnaout, G. +, Rabadi, G.* and Musa, R. (2010) “Modeling cross-dock networks with time constraints using simulation”, Proceedings of The IEEE Systems and Information Engineering Design Symposium (SIEDS’10), Charlottesville, Virginia, P. 52 – 56

Shearer, N.+, Khasawneh, M. +, Jun Zhang+, Bowling, S., and Rabadi, G.* (2010), “Sensitivity Analysis of a large-scale system dynamics immigration model”, Proceedings of The IEEE Systems and Information Engineering Design Symposium (SIEDS’10), Charlottesville, Virginia, P. 78 – 81.

Arin, A. +*, Rabadi, G., and Unal, R. (2009), “Tuning Parameters In Heuristics By Using Design Of Experiments Methods”, Proceedings of Modeling and Simulation (MODSIM) World 2009 Conference & Expo, October 14 -16, 2009, P. 73 – 78, Virginia Beach, VA

Garcia, C. +* and Rabadi, G. (2009) “Optimization Model for Scheduling Problems with Two-Dimensional Spatial Resource Constraints”, Proceedings of Modeling and Simulation (MODSIM) World 2009 Conference & Expo, October 14 -16, 2009, P. 307 – 312, Virginia Beach, VA

Deller, S. +*, Rabadi, G., Bell, M., Bowling, S., Tolk, A. (2009), “Modeling the Information Age Combat Model: An Agent-Based Simulation of Network Centric Operations”, Proceedings of Modeling and Simulation (MODSIM) World 2009 Conference & Expo, October 14 -16, 2009, P. 9 -15, Virginia Beach, VA

Rabadi, G.*, Bowling, S. R., Keating, C., and Unal, R. (2009), “Sensitivity Analysis Framework for Large and Complex Simulation Models”, the Proceedings of the 2009 Summer Computer Simulation Conference, July 13 -16, 2009, Istanbul, Turkey.

Derbes, D.+, Rabadi G., and Musa, R. (2009) “Transportation Problem for a Cross-Dock Network with Time Constraints”, the Proceedings of the Industrial Engineering Research Conference, Miami, FL, 2009, P.1393 – 1398.

Arnaout, J-P.+, Musa, R., and Rabadi, G.* (2008) “Ant Colony Optimization Algorithm to Parallel Machine Scheduling Problem with Setups”, Proceeding of the 4th IEEE Conference on Automation Science and Engineering (CASE), Washington DC, August 23 – 26, 2008, P. 578 – 582.

Bowling, S. R.*, Rabadi, G., Keating, C. (2006), “An Integrated Framework for Modeling and Simulation of the U.S. Southern Border: A Border Patrol Perspective”, Proceedings of the Industrial Engineering Annual Conference, Orlando, Florida, May 20 – 24, 2006.

Rabadi, G.*, Pinto, C.A., Talley, W.K., and Arnaout+, J.P. (2006) “Port Recovery from Security Incidents: A Simulation Approach”, in the Proceedings of the International Workshop on Risk Management in Port Operations, Logistics, and Supply Chain Security, London, UK.

Taslicali, A.+*, Landaeta, R., Unal, R., & Rabadi, G. (2006) “Understanding
Managerial Differences and Similarities between AHP and ANP: An Empirical Study,” in the Proceeding of the 26th National Conference of the American Society for Engineering Management.

Nazikkol, S.+*, Landaeta, R., Unal, R., & Rabadi, G. (2006) “An Empirical
Investigation of the Effectiveness of Crisis Management Strategies,”
Proceeding of the 26th National Conference of the American Society for Engineering Management.

Lepsch, RA., Chytka, TM., Morris, WD., Reeves, JD., Rabadi, G. (2005), “Launch Vehicle Economic Evaluation Using Discrete Event Simulation Based Methodology”, Proceedings of the AIAA Space 2005 Conference, Long Beach, California.

Arnaout, J-P.*+, and Rabadi, G. (2005), “Minimizing the Total Weighted Completion Time on Unrelated Parallel Machines with Stochastic Times”, In M. E. Kuhl, N. M. Steiger, F. B. Armstrong, and J. A. Joines, (eds.), Proceedings of the 2005 Winter Simulation Conference, p. 2141 – 2147, Orlando, FL.

Correa-Martinez, Y.C.+, Bedoya-Valencia+, L., Arnaout+, J-P., Rabadi, G., Ardalan, A. (2005), “Scheduling Policies In An Assembly Environment With Earliness and Tardiness”, Proceeding of the 26th National Conference of the American Society for Engineering Management, p. 156 – 161., Virginia Beach, VA

Lokesh, P. +, Rabadi, G.*, Magary, M. (2005), “A Web-Based Software Application for the ASEM 2005 Conference”, Proceeding of the 26th National Conference of the American Society for Engineering Management, p.236 – 242, Virginia Beach, VA.

Rabadi, G.*, Chytka, T. Morris, W.D., White, N., Unal, R. (2004) “Architectural Simulation Model for Operations of Future Launch Systems”, Proceeding of the 25th National Conference of the American Society for Engineering Management, p. 283 – 289, Alexandria, VA

Mun, J.H.*, Rabadi, G., Levin, D., Bogue, V., McKenna, T., and Vergara, J., (2004) “Smoothing the Patient Flow within Healthcare System”, Proceeding of the 25th National Conference of the American Society for Engineering Management, p. 363 – 367, Alexandria, VA

Tsoy, G. +, Arnaout, J-P.+, Smith, T. +, and Rabadi, G.* (2004), “A Genetic Algorithm Approach for Surgical Operating Rooms Scheduling Problem, Proceeding of the 25th National Conference of the American Society for Engineering Management, p. 299 – 304, Alexandria, VA

Keating, C, Peterson, W., and Rabadi, G. (2003), “Framing of Complex System of Systems Engineering Problems”, Proceeding of the 24th National Conference of the American Society for Engineering Management, p8-15, St. Louis, Missouri.

Bedoya, L. +, and Rabadi, G., Sousa-Poza, A., Keating, C., Peterson, W. (2003), “A Tabu Search Approach for the Job Shop Scheduling Problem with Earliness and Tardiness”, Proceeding of the 24th National Conference of the American Society for Engineering Management, p420-425, St. Louis, Missouri.

Bedoya, L. +, and Rabadi, G., (2003), “A Multi-agent Approach  for the Job Shop Scheduling Problem with Earliness and Tardiness”, Proceeding of the IEEE International Conference on Systems, Man, and Cybernetics (IEEE SMC), p 1217-1222, Washington D.C.

Rabadi, G., Anagnostopoulos, G.C., and Mollaghasemi, M. (2002) “A Simulated Annealing Algorithm for a Scheduling Problem with Setup Times”, Proceeding of Industrial Engineering Research Conference, Orlando, Florida.

Anagnostopoulos, G.C., and Rabadi, G. (2002)“A Simulated Annealing Algorithm for the Unrelated Parallel Machine Scheduling Problem”, Proceeding of the World Automation Congress (WAC), Orlando, Florida.

Sousa-Poza, A., Keating, C., Peterson, W., and Rabadi, G. (2002) “Boundary Setting: Inherent Problems and Solutions for an ISO 9001 Based Quality Management System”, Proceeding of the 23rd Annual American Society for Engineering Management, Tampa, Florida, pp. 162-168.

Moraga, R. and Rabadi, G. (2002) “Application of Simulated Annealing to Parallel Machine Scheduling Problems: A Literature Review”, Proceeding of the Latin-Iberian American Congress of Operations Research (CLAIO), Concepción, Chile.

Cates, G. R., Steele, M. J., Mollaghasemi, M., and Rabadi, G. (2002). “Modeling the Space Shuttle”. In E. Yücesan, C.-H. Chen, J. L. Snowdon, and J.M. Charnes (eds.), Proceedings of the 2002 Winter Simulation Conference, 754-762.

Steele, M. J., Mollaghasemi, M., Rabadi, G., and Cates, G. R. (2002). “Generic Simulation Models of Reusable Launch Vehicles”. In E. Yücesan, C.-H. Chen, J. L. Snowdon, and J. M. Charnes (eds.), Proceedings of the 2002, Winter Simulation Conference, 747 – 753.

Rabadi, G. (2001) “Application of Constraint Programming to a Scheduling Problem with a Common Due Date and Setup Times”, Proceeding of the 1st International Industrial Engineering Conference, Amman, Jordan pp. 275-284.

Duwayri, Z. +, Mollaghasemi, M., Rabadi, G., and Nazzal, D. + (2001) “Dispatching Rule to Schedule  Setup Changes at Bottleneck Facilities in Semiconductor Fabs”, Proceeding of the 1st International Industrial Engineering Conference, Amman, Jordan, pp. 233-240.

Kaylani, A. +, and Rabadi, G. (2001) “Application of Industrial Engineering Practices to Software Development Using Database Representation of the Software Process”, Proceeding of the 1st International Industrial Engineering Conference, Amman, Jordan, pp. 425-432.

Cates, G., Mollaghasemi, M., Rabadi, G., and Steele, M. (2001) “Macro-Level Simulation Model of Space Shuttle Processing”, Military, Government and Aerospace Simulation Proceeding, Part of 2001 Advanced Simulation Technologies Conference, Sponsored by The Society for Computer Simulation International (SCS) Vol. 33, No. 4, pp. 143-148.

Salem, A., Anagnostopoulos, G.C., and Rabadi, G. (2000) “A Branch-and-Bound Algorithm for Parallel Machine Scheduling Problems”, Proceeding of Harbour, Maritime & Multimodal Logistics Modeling and Simulation Workshop, a publication of the Society for Computer Simulation International (SCS), Portofino, Italy, pp. 88-93.

Mollaghasemi, M., Rabadi, G., Cates, G., Correa, D., Steele, M., and Shelton, D. (2000) “Simulation Modeling and Analysis of Space Shuttle Flight Hardware Processing”, Proceeding of Harbour, Maritime & Multimodal Logistics Modeling and Simulation Workshop, a publication of the Society for Computer Simulation International (SCS), Portofino, Italy, pp. 59-62.

Abstracts and Presentations

(* indicates a student or post doc co-author at the time of performing the research)

  1. Soykan, B.*, and Rabadi, G. (2023). Digital Twins and Deep Reinforcement Learning for Online Optimization of Scheduling Problems, Extended abstract, Winter Simulation Conference, December 10-13, San Antonio, TX
  2. Soykan, B.*, Bhatti, D. and Rabadi, G. (2024). Assessing Large Language Models in Complex Reasoning Tasks: A Case Study in Medical Student Evaluation. 2024 Southern Group on Educational Affairs (SGEA) Regional Meeting, Abstract, April 11-13, Houston, Texas.
  3. Soykan, B.*, and Rabadi, G. (2023). Teaching Simulation with ChatGPT. Teaching and Learning with AI Conference, Sept 24-25, Orlando, FL
  4. Rabadi, G. (2022). From R&D to a startup: iHELP—a simulation, optimization, and analytics platform for disaster response, INFORMS Business Analytics Conference, April 3 – 5, 2022. Abstract is available here
  5. Rabadi, G. (2021). Ahmed Al-Qarqaz, Dia Abu Jaber, Christopher Garcia, Rashed Omar , Machine learning models and algorithms for disaster social media text and images, 2021 NATO Computer-Assisted Analysis, Exercise and ExperimentationForum (CA2X2), Oct 2021
  6. Rabadi, G. (2021)  iHELP – Intelligent Holistic Emergency Logistics Platform: a cloud based simulation and optimization platform to help in logistical planning in disaster response, presented at ODU’s Program Acceleration for Collaborative Entrepreneurship (PACE), April 7, 2021
  7. Rabadi, G., Kotachi, M.*, Msakni, M.K., Al-Salem, M. and Diabat, A. (2016) “A Discrete Event Simulation for the Logistics of Hamad’s Container Terminal of Qatar”, INFORMS 2016, Nashville, Tennessee, Nov 13-16, 2016
  8. Rabadi, G., and Seck, M. (2016) “Optimization and Simulation Models for Transporting NATO Assets, NATO’s Forum on Movement and Transportation, NATO-ACT, Norfolk, VA, Nov 17, 2016
  9. Seck, M. and Rabadi, G. (2016) “NATO Logistics Simulation: User Operational Requirements Assessment, NATO Allied Command Transformation (ACT) Tide Sprint Conference, Virginia Beach, VA, October 27 – October 31, 2016
  10. Rabadi, G., Al-Salem, M., Ghoniem, A. (2015) “A Gravity Model for Tourist Forecasting at FIFA Soccer World Cups”, INFORMS 2015, Philadelphia, PA, Nov 1 – 4, 2015
  11. Rabadi, G., Al-Salem, M., Ghoniem, A., and Ali, A. (2014), “Analyzing and Forecasting Attendance at FIFA Soccer World Cups”, INFORMS 2014, San Francisco, California, Nov 9-12, 2014
  12. Köksalmış, E.*, Garcia, C. *, and Rabadi, G. (2013) “A Mixed-Integer Programming Model for Examination Timetabling Problem”, Industrial Engineering Annual Conference, San Juan, Porto Rico, May 18 – 22, 2013
  13. Rabadi, G., Ghoniem, A., Al-Salem, A., Sherali, H., Kharbeche, M., Farhadi, F. *, Hancerliogullari, G. (2012) “Aircraft Scheduling on Multiple Runways”, Joint Qatar Foundation Annual Research Forum and Arab Expatriate Scientists Network, October 21-23, 2012, Doha, Qatar
  14. Hancerliogullari, G.*, Rabadi, G. (2012), “Approximate Algorithms for Aircraft Rescheduling Problems Under Operation Disruptions”, INFORMS 2012, Phoenix, AZ (October 14-17).
  15. Arin, A. *, and Rabadi, G. (2011), “Online Parameter Tuning: Another Aspect of Learning for Metaheuristics”, 25th European Conference on Operational Research, EURO 2012, July 08-11, Vilnius, Lithuania
  16. Rabadi, G., Hancerliogullari, G.*, Al-Salem, A. (2011) “Approximate Algorithms for Aircraft Arrival and Departure Scheduling over Multiple Runways, INFORMS 2011, Charlotte, North Carolina 
  17. Pinto, C. A., Rabadi, G., Talley, W., and Arnaout, J-P.* (2006) “Risk, Resiliency, and Port Security: A framework Towards Continuity of Competitiveness in Port Operations, Annual Meeting of the Society for Risk Analysis, December 3-6, 2006 Baltimore, Maryland
  18. Rabadi, G., Bouchard, J., Keever, J., Crouch, K., Verdery, S., (2006), Panel on “Modeling & Simulation Scenarios for Maritime and Transportation Security”, in Merging the Study of Maritime Trade and Security Workshop, Hampton, Virginia.
  19. Rabadi, G. (2005) “Development of the Architectural Simulation Model for Future Launch Systems and its Application to an Existing Launch Fleet”, Presented at NASA Langley Research Center.
  20. Rabadi, G. (2004) “Operational Simulation Modeling for Architectures of Future Space Launch Vehicles, The 6th Annual Industrial Engineering Simulation Solution Conference (IE SimSol), Orlando, Florida
  21. Bedoya, L.*, Correa, Y. *, and Rabadi, G. (2004) “Dynamic Scheduling in Assembly Flow Shop Environments Considering Earliness and Tardiness”, INFORMS Denver, Colorado.
  22. Rabadi, G. (2003) “A Discrete-Event Simulation Model to Assess Operations and Support Cost of Launch System Architectures”, NASA Faculty Fellowship Program Finalist Presentation in the Best Research Presentation Competition.
  23. Rabadi, G., Mollaghasemi, M., Cates, G., and Steele, M. (2001) “A Discrete-Event Simulation Model for the Space Shuttle Ground Processing Operations at Kennedy Space Center, Simulation and Modeling for Acquisition, Requirements and Training (SMART) Conference, Orlando, Florida. 
  24. Rabadi, G., Salem, A., and Anagnostopoulos, G.C. (2001) “A Branch-and-Bound for a Parallel Machine Scheduling Problem with Setup Times”, INFORMS Miami, Florida.
  25. Rabadi, G., and Mollaghasemi, M. (2000) “A New Heuristic for the Ion Implanters Scheduling Problem in a Semiconductor Wafer Fabrication Plant”, San Antonio, Texas
  26. Rabadi, G., and Mollaghasemi, M. (1999) “A New Heuristic to Solve the Early/tardy Problem with Sequence-Dependent Setup Times”, INFORMS Cincinnati, Ohio.
  27. Rabadi, G., and Mollaghasemi, M. (1999) “A New Branch-and-Bound Algorithm to Solve the Just-In-Time Scheduling Problem”, INFORMS Philadelphia, Pennsylvania.
  28. Rabadi, G., and Mollaghasemi, M. (1998) “Determination of Optimal Due Dates & Sequence to Minimize Earliness & Tardiness with Sequence-Dependent Setup Times”, INFORMS Montreal, Canada. 
  29. Rabadi, G., and Mollaghasemi, M. (1997) “Application of Genetic Algorithm to the Early/Tardy Problem with Sequence-Dependent Setup Times”, INFORMS San Diego, California.