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dr. K. Gkiotsalitis (Konstantinos)

Assistant Professor

About Me

Konstantinos (Kostas) is Assistant Professor in data science in transportation engineering at the Centre for Transport Studies (CTS). His research focuses on public transport modeling, demand prediction, tactical/operational planning, traffic operations and data-driven optimization. From 2012-2018 he was conducting transportation R&D at NEC Laboratories Europe (Heidelberg, Germany) with a specific focus on EU and APAC markets.

He received his Ph.D. from the National Technical University of Athens on unveiling the mobility patterns of individuals and matching the transportation supply with the travel demand. He also received his bachelor's degree in Civil Engineering from the National Technical University of Athens (2010) and his MSc in Transport and Sustainable Development from Imperial College London and University College London (2012). 

He has been involved in several EU and international projects on smart cities, urban mobility, public transport operations, MaaS and logistics and has several patent applications in the aforementioned areas. He is also an active member of the IEEE community and the European Association for Research in Transportation (hEART).

Professional Experience

  • 2018-current: Assistant Professor, Centre for Transport Studies, Faculty of Engineering Technology, University of Twente
  • 2015-2018: Research Scientist, Data Science Applications Group, NEC Laboratories Europe, Heidelberg, Germany
  • 2012-2015: Research Associate, Intelligent Transport Systems Group, NEC Laboratories Europe, Heidelberg, Germany

 

 

 

Expertise

Time
Costs
Travel
Costs
Cost
Bus
Allocation
Services
Uncertainty
Uncertainty
Demand
Evaluation
Performance
Travel Time
Bus
Synchronization
Synchronization
Regularity
Regularity

Publications

Other Contributions

Peer-reviewed Journal Publications

  1. K. Gkiotsalitis, Z. Wu, O. Cats (2019): "A cost-minimization model for bus fleet allocation featuring the tactical generation of short-turning and interlining options", Transportation Research Part C: Emerging Technologies, (98), 14-36.
  2. K. Gkiotsalitis, N. Maslekar (2018): "Towards transfer synchronization of regularity-based bus operations with sequential hill-climbing", Public Transport, 1-27.
  3. K. Gkiotsalitis, N. Maslekar (2018): "Multiconstrained timetable optimization and performance evaluation in the presence of travel time noise", Journal of Transportation Engineering, Part A: Systems, vol. 144, issue 9.
  4. K. Gkiotsalitis, O. Cats (2018): "Reliable frequency determination: Incorporating information on service uncertainty when setting dispatching headways", Transportation Research Part C: Emerging Technologies 88, 187-207.
  5. K. Gkiotsalitis, R. Kumar (2018): "Bus operations scheduling subject to resource constraints using evolutionary optimization", Informatics, vol.5, issue 1.
  6. K. Gkiotsalitis, A. Stathopoulos (2016): "Joint leisure travel optimization with user-generated data via perceived utility maximization", Transportation Research Part C: Emerging Technologies 68, 532-548.
  7. K. Gkiotsalitis, N. Maslekar (2016): "Dynamic Bus Operations Optimization with REFLEX", NEC Journal of Artificial Intelligence, vol. 69, no 1, 69-72.
  8. K. Gkiotsalitis, A. Stathopoulos (2016): "Demand-Responsive Public Transportation Rescheduling for adjusting to the Joint Leisure Activity Demand", International Journal of Transportation Science and Technology (IJTST), Elsevier, vol. 5, issue 2, 68-82.
  9. K. Gkiotsalitis, A. Stathopoulos (2015): "A utility-maximization model for retrieving users' willingness to travel for participating in activities from big-data", Transportation Research Part C: Emerging Technologies 58, 265-277.
  10. K. Gkiotsalitis, A. Stathopoulos (2015): "A mobile application for real-time multimodal routing under a set of users' preferences", Journal of Intelligent Transportation Systems 19 (2), 149-166.
  11. AHF Chow, Y Li, K Gkiotsalitis (2015): "Specifications of fundamental diagrams for dynamic traffic modeling", Journal of Transportation Engineering 141 (9), 04015015.
  12. K Gkiotsalitis, AHF Chow (2014): "Significance of fundamental diagrams to first-order macroscopic traffic modelling", International Journal of Transportation 2 (2), 15-32.  

Book Chapters

  1. K.T. Geurs, K. Gkiotsalitis, T. Fioreze, G. Visser, M. Veenstra (2018): "The potential of a Mobility-as-a-Service platform in a depopulating area in the Netherlands: An exploration of small and big data", Population Loss-The role of Transportation and Other Issues, 55-79.
  2. K. Gkiotsalitis, A. Stathopoulos (2015): "Optimizing Leisure Travel: Is BigData Ready to Improve the Joint Leisure Activities Efficiency?", Engineering and Applied Sciences Optimization, 53-71.

Conferences

  1. K. Gkiotsalitis, F. Alesiani (2018): "Resilient Bus Dispatching Times by Coupling Monte Carlo Evaluations with a Genetic Algorithm", 21st International IEEE Conference on Intelligence Transport Systems.
  2. F. Alesiani, K. Gkiotsalitis (2018): "Reinforcement Learning-Based Bus Holding for High-Frequency Services", 21st International IEEE Conference on Intelligence Transport Systems.
  3. K. Gkiotsalitis, O. Cats (2018): "Network-wide synchronized scheduling of public transport services", hEART 2018: 7th Symposium of the European Association for Research in Transportation.
  4. K. Gkiotsalitis (2018): "Rolling-horizon optimization of the bus holding problem with sequential hill climbing", at the 97th Annual Meeting of the Transportation Research Board.
  5. K. Gkiotsalitis, Z. Wu, O. Cats (2017): "Tactical service design and vehicle allocation optimization", hEART 2017: 6th Symposium of the European Association for Research in Transportation.
  6. K. Gkiotsalitis, O. Cats (2017): "Exact optimization of Bus Frequency Settings considering Demand and Trip time variations", at the 96th Annual Meeting of the Transportation Research Board.
  7. K. Gkiotsalitis, N. Maslekar (2017): "Sequential Evolutionary Optimization for improving regularity-based bus services", at the 96th Annual Meeting of the Transportation Research Board.
  8. K. Gkiotsalitis, N. Maslekar (2015): "Improving Bus Service Reliability with Stochastic Optimization", 18th International IEEE Conference on Intelligent Transport Systems (ITSC), 2794-2799.
  9. K. Gkiotsalitis, F. Alesiani (2014): "Opportunistic solution-space reduction techniques for reducing the time complexity of Dynamic Speed Control with microsimulation on motorways", 17th International IEEE Conference on Intelligent Transport Systems (ITSC), 1788-1795.
  10. K. Gkiotsalitis, F. Alesiani, R. Baldessari (2014): "Educated rules for the prediction of human mobility patterns based on sparse social media and mobile phone data", Transportation Research Board, 93rd Annual Meeting.
  11. K. Gkiotsalitis, A. Alexandrou (2014): "Mobility demand prediction in urban scenarios through multi-source, user-generated data", 18th Pan-American conference of traffic and transportation engineering (PANAM)
  12. F. Alesiani, K. Gkiotsalitis, R. Baldessari (2014): "A probabilistic activity model for predicting the mobility patterns of homogeneous social groups based on social network data", Transportation Research Board, 93rd Annual Meeting.

Patents

  1. K. Gkiotsalitis, F. Alesiani, N. Maslekar (2018): "Method and system for providing demand-responsive dispatching of a fleet of transportation vehicles, and a mobility-activity processing module for providing a mobility trace database", US Patent 9,953,539, 2018.
  2. K. Gkiotsalitis, Z. Wu, O. Cats (2018): "Method for route optimization for demand responsive transportation", US Patent App. 15/920,645, 2018.
  3. K. Gkiotsalitis, O. Cats (2018): "Transportation system and method for allocating frequencies of transit services therein", US Patent App. 15/439,979, 2018.
  4. K. Gkiotsalitis, N. Maslekar (2016): "Method for providing configuration information for a system comprising a plurality of moving objects", WO/2016/155790, 2016.
  5. Gkiotsalitis, F. Alesiani (2015): "Method and computer program product for accurate motorway speed control", WO Patent WO2015049064 A1, 2015.
  6. Gkiotsalitis, N. Maslekar (2015): "Dynamic Fleet Routing", WO Patent WO/2015/154, 2015.
  7. K. Gkiotsalitis, F. Alesiani, R. Baldessari (2014): "Method and system for predicting mobility demand of users", WO2014187476 A1, 2014.

UT Research Information System

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Contact Details

Visiting Address

University of Twente
Faculty of Engineering Technology
Horst Complex (building no. 20), room Z222
De Horst 2
7522LW  Enschede
The Netherlands

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Mailing Address

University of Twente
Faculty of Engineering Technology
Horst Complex  Z222
P.O. Box 217
7500 AE Enschede
The Netherlands