Research

TRANSP-OR: Stefano Bortolomiol

Stefano Bortolomiol

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 Stefano Bortolomiol.

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Stefano Bortolomiol

      Papers in conference proceedings

      • Bortolomiol, S., Lurkin, V., and Bierlaire, M. (2019). A demand-based optimization approach to find market equilibria in oligopolies. Proceedings of the 19th Swiss Transport Research Conference (STRC) 15-17 May, 2019.
      • Bortolomiol, S., Lurkin, V., and Bierlaire, M. (2018). Modelling competition in demand-based optimization models. Proceedings of the 18th Swiss Transport Research Conference (STRC) 16-18 May, 2018.

      Technical reports

      Seminars

      Reviewing

    • European Journal of Transport and Infrastructure Research (1)
    • Transportation Research Part D: Transport and Environment (1)
    • Total: 2 reviews for 2 journals (since 2004). Per year: 2020: 2.

      Research projects

      Incorporating competitors' behavior in demand based optimization models
      Sponsor: Swiss National Science Foundation
      Team: Michel Bierlaire (PI), Virginie Lurkin (PM), Stefano Bortolomiol
      Period: November 01, 2017-October 31, 2020
      The starting point of this research project is the general framework developed in the SNF research project 200021_165636 entitled Incorporating advanced behavioral models in mixed integer linear optimization. The project aims at formulating explicitly the complex interaction between the supply and demand actors. We hypothesize that the decisions of supply actors (such as capacity, assortment, and price) are highly influenced by the decisions of other actors, through competition within the market. In this project, we will therefore explicitly consider multiple operators that compete for the same pool of customers. Each operator will take the supply-side decisions that optimize its performance function (e.g., maximization of revenue). Non-cooperative game theory is commonly used to model such oligopolistic competition. We plan to investigate how to integrate these games in the already developed framework. In this context, the objective will be to analyze the concept of equilibrium, that is, stationary states of the system where no actor has an incentive to change his/her decisions.

      Regular teaching

      Decision-aid methodologies in transportation
      Year: Spring 2020
      Section(s): Civil Engineering
      Lecturers: Tim Hillel, Nour Dougui
      Teaching assistant: Stefano Bortolomiol, Gael Lederrey, Selin Atac, Janody Pougala
      Webpage: https://transp-or.epfl.ch/courses/decisionAid2020/index.php
      Introduction to optimization and operations research
      Year: Fall 2019
      Section(s): Mechanical Engineering, Civil Engineering, Environmental Sciences and Engineering, Electrical and Electronics Engineering
      Lecturer: Michel Bierlaire
      Teaching assistant: Nour Dougui, Selin Atac, Stefano Bortolomiol
      Webpage: https://moodle.epfl.ch/course/view.php?id=14491
      Decision-aid methodologies in transportation
      Year: Spring 2019
      Section(s): Civil Engineering
      Lecturers: Nikola Obrenovic, Tim Hillel
      Teaching assistant: Stefano Bortolomiol, Gael Lederrey, Selin Atac
      Webpage: http://transp-or.epfl.ch/courses/decisionAid2019/index.php
      Introduction à l'optimisation et à la recherche opérationnelle
      Year: Fall 2018
      Section(s): Mechanical Engineering, Civil Engineering, Environmental Sciences and Engineering, Electrical and Electronics Engineering
      Lecturer: Michel Bierlaire
      Teaching assistant: Nikola Obrenovic, Gael Lederrey, Stefano Bortolomiol, Selin Atac
      Webpage: http://transp-or.epfl.ch/courses/optimization2018/
      Decision-aid methodologies in transportation
      Year: Spring 2018
      Section(s): Civil Engineering
      Lecturers: Virginie Lurkin, Nikola Obrenovic
      Teaching assistant: Stefano Bortolomiol, Gael Lederrey
      Webpage: http://transp-or.epfl.ch/courses/decisionAid2018/index.php

      Project supervision

      Masters theses

      Oliver Buschor
      Section: Civil Engineering
      Disruption-caused railway timetable rescheduling problem and its solution
      Supervision:Meritxell Pacheco, Stefano Bortolomiol, Michel Bierlaire
      Expert: Hellwig Matthias
      01/08/2019-20/12/2019
      Mohamed Detsouli
      Section: Civil Engineering
      Dynamic optimization of a bicycle-sharing system
      Supervision:Stefano Bortolomiol, Michel Bierlaire
      Expert: Frédéric Meunier
      18/02/2019-08/07/2019
      Nicolas Pradignac
      Section: Computer science
      Heuristic algorithms to find market equilibria in oligopolies
      Supervision:Stefano Bortolomiol, Nikola Obrenovic, Michel Bierlaire
      Expert: Olivier Gallay
      18/02/2019-08/07/2019

      Semester projects

      • Schedule repair in liner shipping, Benoit Pahud (GC), January 29, 2021
      • Optimal regulation of oligopolistic markets with discrete choice models of demand, Elodie Duliscouet, Paulin Raison, Yahya Basiouny (GM), June 12, 2020
      • Robust routing and scheduling in liner shipping, Yannis Voet (GC), June 12, 2020
      • Analysis of the value of demand forecasting within vehicle sharing systems, Jasso Espadaler (CE), January 31, 2020
      • Railway infrastructure maintenance, Ludovica Sessa and Robert Abboud (CDM), January 31, 2019
      • Dynamic optimization of self-service vehicles, Mohamed Detsouli (GC), January 31, 2019
      • A solution approach for the Multicommodity Flow Problem within rail freight transportation, Nicolas Pradignac (IC), June 19, 2018
      • Modelling competition in demand-based optimization models, Charlotte Darné (BS), June 19, 2018