Research

TRANSP-OR: Michaël Thémans

Michaël Thémans

This page reports only the academic work registered in the databases of the Transport and Mobility Laboratory, and is not necessarily a comprehensive list of the work by Michaël Thémans.

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Michaël Thémans

International journals

Published

Total: 5

Books

  • Louvet, M., Kaufmann, V., Thémans, M., Godillon, S., Nessi , H., Rocci, A., Le Bris, C., and Adoue, F. (2013). Les usages de la mobilité: pour une ingénierie des modes de vie. Editions Loco.

    Papers in conference proceedings

    • Hänseler, F., Bierlaire, M., Molyneaux, N., Scarinci, R., and Thémans, M. (2015). Modeling pedestrian flows in train stations: The example of Lausanne railway station. Proceedings of the Swiss Transportation Research Conference (STRC) April 15-17, 2015.
    • Chen, J., Atasoy, B., Robenek, T., Bierlaire, M., and Thémans, M. (2013). Planning of feeding station installment for electric urban public mass-transportation system. Proceedings of the 13th Swiss Transportation Research Conference (STRC) 24-26 April, 2013.
    • Stathopoulos, A., Glerum, A., Thémans, M., and Bierlaire, M. (2013). Dynamic vehicle ownership forecasting: a framework to model inter-temporal renewal decisions. Proceedings of the Swiss Transportation Research Conference (STRC) April 24-26, 2013.
    • Glerum, A., Thémans, M., and Bierlaire, M. (2011). Modeling demand for electric vehicles: the effect of car users' attitudes and perceptions. Proceedings of the Second International Choice Modeling Conference (ICMC) July 4-6, 2011.
    • Glerum, A., Thémans, M., and Bierlaire, M. (2011). Emergence of electric mobility: a nested approach to vehicle choice modeling. Proceedings of the 11th Swiss Transport Research Conference (STRC) May 11-13, 2011.
    • Bierlaire, M., Thémans, M., and Zufferey, N. (2007). Nonlinear global optimization relevant to discrete choice models estimation. Proceedings of the 7th Swiss Transport Research Conference (STRC) 12-14 September 2007, 2007.
    • Bierlaire, M., Thémans, M., and Zufferey, N. (2007). A heuristic for nonlinear global optimization relevant to discrete choice models estimation. Proceedings of the of the Sixth Triennial Symposium on Transportation Analysis (TRISTAN) (TRISTAN) June 10-15, 2007.
    • Thémans, M., and Bierlaire, M. (2006). Solving singularity issues in the estimation of econometric models. Proceedings of the Swiss Transport Research Conference (STRC) March, 15-17, 2006.
    • Bierlaire, M., and Thémans, M. (2005). Algorithmic developments for the estimate of advanced discrete choice models. Proceedings of the 5th Swiss Transportation Research Conference (STRC) March 09-13, 2005.
    • Bierlaire, M., and Thémans, M. (2005). Development of Swiss models for transportation demand prediction in response to real-time traffic information. Proceedings of the Swiss Transport Research Conference (STRC) March, 09-11, 2005.

    Technical reports

    Seminars

    Reviewing

  • Optimization Methods and Software (2)
  • European Journal of Operational Research (1)
  • Journal of Choice Modelling (1)
  • Optimization and Engineering (1)
  • Total: 5 reviews for 4 journals (since 2004). Per year: 2009: 1, 2007: 3, 2006: 1.

    Research projects

    Pedflux: Pedestrian flow modeling in train stations
    Sponsor: Swiss Federal Railways (SBB)
    Team: Michel Bierlaire (PI), Michaël Thémans (PM), Riccardo Scarinci (PM), Flurin Hänseler
    Period: April 01, 2012-March 31, 2015
    The aim of this collaborative research project between the Swiss Federal Railways (SBB-CFF-FFS) and EPFL's transportation center is to analyze, model and optimize pedestrian flows in train stations. In recent years, the growing number of passengers has led to difficulties related to pedestrian flows in major train stations. Congestion of pedestrian walkways is increasingly becoming a problem during peak hours, but also due to clustering of people caused by major events or the beginning or end of holiday season. When capacity limits for pedestrian facilities are reached, normal operation of train schedules can be significantly impaired. Since train stations are important nodes within the multimodal public transportation system, it is of major importance that they are operated as efficiently as possible. In addition to the increase in passenger numbers, train stations have been undergoing a profound transformation from simple transit nodes towards versatile hubs that provide interface to short and long-distance train connections, to other modes including private transport by foot, bike and car, as well as to the city offering public space for shopping, eating and alike. This transformation leads to a further increase in pedestrian numbers and additionally introduces new behavior patterns. A sound understanding of pedestrian flows within a train station can help improve overall level of service, customer experience and safety. The main focus of this study lies on the development of a methodology allowing to estimate pedestrian origin-destination (OD) demand within a train station. Specifically, train time table, customer survey data and flow observations from an exhaustive camera system are used as sources of information in this process. Subsequently, the modeling frame work is applied to several case studies in Switzerland.
    Léman 2030: Flux piétons Gare de Lausanne
    Sponsor: Swiss Federal Railways (SBB)
    Team: Michel Bierlaire (PI), Michaël Thémans (PM), Bilal Farooq (PM), Flurin Hänseler, Antonin Danalet, Sohrab Sahaleh
    Period: October 01, 2011-July 15, 2012
    In the framework of a 9-month collaboration with CFF, pedestrian flows in Lausanne train station are estimated and modeled. Specifically, an estimation methodology for pedestrian origin-destination demand is developed and applied to predict a demand scenario for 2030. By means of a pedestrian flow simulator, several infrastructure scenarios are quantitatively evaluated, the result of which helps CFF to design and dimension pedestrian underpasses of Gare de Lausanne for the future.
    Demande de consommateurs pour des véhicules électriques
    Sponsor: Renault Suisse SA
    Team: Michel Bierlaire (PI), Michaël Thémans (PM), Aurélie Glerum
    Period: August 01, 2010-April 30, 2011
    Evaluation de la demande des consommateurs pour des véhicules électriques en vue du lancement d'une telle gamme par Renault
    Optimization methods for advanced discrete choice models
    Sponsor: Swiss National Science Foundation
    Team: Michel Bierlaire (PI), Michaël Thémans (PM)
    Period: April 01, 2004-March 31, 2007
    Development of optimization algorithms designed for the maximum likelihood estimation of advanced discrete choice models where the objective function is singular, and non-trivial constraints are imposed on the parameters
    Développement de modèles suisses de prédiction de la demande en transport pour des applications en temps réel (Development of Swiss models for transportation demand prediction in the context of traffic management systems)
    Sponsor: VSS - Association of Swiss Road and Traffic Engineers
    Team: Michel Bierlaire (PI&PM), Michaël Thémans
    Period: January 01, 2003-December 31, 2004
    Development of operational disaggregate demand models for efficient dynamic traffic managment systems

    Regular teaching

    Introduction à l'optimisation différentiable
    Year: Fall 2010
    Section(s): Mechanical Engineering, Electrical and Electronics Engineering, Chemistry and Chemical Engineering, Computer science
    Lecturer: Michaël Thémans
    Teaching assistant: Bilge Atasoy, Ricardo Hurtubia
    Number of students: 107
    Introduction à l'optimisation différentiable
    Year: Fall 2009
    Section(s): Mechanical Engineering, Electrical and Electronics Engineering, Chemistry and Chemical Engineering, Computer science
    Lecturer: Michaël Thémans
    Teaching assistant: Ilaria Vacca
    Number of students: 101
    Introduction à l'optimisation différentiable
    Year: Fall 2008
    Section(s): Mechanical Engineering, Electrical and Electronics Engineering, Chemistry and Chemical Engineering, Computer science
    Lecturer: Michaël Thémans
    Teaching assistant: Ilaria Vacca
    Optimisation 1
    Year: Fall 2007
    Section(s): Mechanical Engineering, Communication Systems, Electrical and Electronics Engineering
    Lecturer: Michaël Thémans
    Teaching assistant: Niklaus Eggenberg, Ilaria Vacca

    Miscellaneous lectures

    Trust-region based algorithms for singular nonlinear optimization with applications to discrete choice models
    Program: , May 12, 2005
    School: EPFL
    Lecturer: Michaël Thémans
    Modélisation et simulation du flux d'une ligne d'embouteillage
    Program: , August 15, 2002
    School: EPFL
    Lecturer: Michaël Thémans

    Project supervision

    Masters theses

    Sabine Luisier
    Section: Mathematics
    The modeling of the investors behavior
    Supervision:Michel Bierlaire, Thomas Robin, Michaël Thémans
    Expert: Dr. Frank Crittin, LODH
    21/09/2010-21/01/2011
    Antonin Danalet
    Section: Mathematics
    An Empirical Investigation of the Determinants of Attention to Attributes in Choice Experiments
    Supervision:Michel Bierlaire, Michaël Thémans, Thomas Robin
    Expert: Prof. Ricardo Scarpa
    16/02/2009-19/06/2009
    Done at the University of Waikato, Hamilton, New Zealand
    Gianni Farini
    Section: Mathematics
    Développement d'une étude de cas pour l'analyse des comportements par modèles de choix discrets
    Supervision:Michel Bierlaire, Michaël Thémans
    Expert: Teghem J., Polytech. Mons, Belgique
    01/02/2006-30/06/2006
    Lionel Dumartheray
    Section: Mathematics
    Degenerate nonlinear constrained programming
    Supervision:Michel Bierlaire, Michaël Thémans
    Expert: Prof. Th. Liebling (EPFL - IMA - ROSO)
    16/10/2005-24/02/2006
    Alexander Scheidegger
    Section: Mathematics
    Energy management optimization for a solar vehicle
    Supervision:Michaël Thémans, Emma Frejinger
    Expert: Liebling Th. M., EPFL-ROSO
    15/10/2005-24/02/2006
    Frédéric Mivelaz
    Section: Mathematics
    Utilisation des modèles d'utilité pour évaluer la valeur du temps
    Supervision:Michel Bierlaire, Michaël Thémans
    Expert: Rico Maggi, Uni. Lugano
    15/10/2004-17/02/2005

    Semester projects

    • Analysis of consumer behaviour in terms of product preference/choice., Aurélie Glerum (SMA), June 12, 2009
    • Est-il possible de réduire le nombre de panélistes dans une étude DTS (Dominance Temporelle des Sensations) sans altérer la qualité des résultats?, Glerum Aurélie (SMA), January 11, 2009
    • Detection of behavioral inconsistency in Revealed Preferences surveys , Laurence de Torrenté and Ariane Wenger (SMA), February 01, 2006
    • Detection of behavioral inconsistency in Revealed Preferences surveys , Julie Marc (SMA), June 23, 2005
    • Discrete choice models: development of case studies, Frédéric Anken (SMA), June 22, 2005
    • Different strategies for trust-region size management, Emmanuel Leclercq (SMA), June 20, 2005
    • Stated Preferences Survey for the choice of exchange university, Eric Von Aarburg (SMA), June 20, 2005
    • Route Choice Analysis using GPS Data, Lindbäck Rolf (SSC), February 15, 2005
    • Calibration of models for transportation demand in the context of real-time applications, Mohamed Rhmari Tlemçani (SSC), June 25, 2004
    • Adaptation of GSM for unconstrained nonlinear optimization, Anouck Brossard and Sarah Degallier (SMA), June 23, 2004
    • On the convergence of multi-dimensional filter methods, Lionel Dumartheray (SMA), June 23, 2004
    • Identification of Coherent Behavior using Linear Programming, Ittig Oliver (SMA), June 20, 2004
    • Dynamic O-D matrices estimation with iGSM, Olivier Grandjean (SMA), February 01, 2004
    • Testing GSM on unconstrained nonlinear optimization problems, Mina Adel Latif (SSC), June 20, 2003
    • Discrete choice models to capture drivers behavior in response to real-time traffic information, Thomas Quentin Maillard (SMA), June 20, 2003
    • Empirical analysis of the correlation in discrete choice models, Steve Salom (SSC), February 01, 2003