Transport and Mobility Laboratory: Research projects

TRANSP-OR

Discrete Choice Models

We identify new solutions to transportation problems, on the ground, in the air, or on the sea, transport of people or goods, whatever the mode. We focus on technical solutions, but also on their impact on the system as a whole. We are also interested in the interactions of the transportation systems with the land use, the economy, the environment, etc.

Incorporating competitors' behavior in demand based optimization modelsTop

Incorporating competitors' behavior in demand based optimization modelsSwiss National Science Foundation

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.

Principal investigator
Michel Bierlaire
Project manager
Virginie Lurkin
Sponsor
Swiss National Science Foundation
Period
November 01, 2017-October 31, 2020
Collaborator
Stefano Bortolomiol
LaTeX description

ACTIVITY BASED TRAVEL DEMAND FORECASTINGTop

ACTIVITY BASED TRAVEL DEMAND FORECASTINGSwiss Federal Railways (SBB)

This research project aims to update and improve the microscopic activity-based demand model developed and maintained by SBB. Specifically the research intends to address the following questions: 1. Ownership of mobility instruments: Which metrics and specifications can be added to the current model, in order to improve its ability to forecast mid-and long-term ownership of mobility instruments? More specifically, how can the notion of accessibility be integrated to the current model to capture more complex mode interactions? 2. Mode choice model: Can a tour-based approach be used to model mode choice? In addition, how can the processes to estimate destination and mode choice (currently nested) be combined to generate results that are consistent with observed mobility behaviors at different time horizons (short, mid, and long-term)? 3. Tour and activity generation: How can the generation of tours and activity patterns be combined to allow modelling of joint decisions?

Principal investigator
Michel Bierlaire
Project manager
Tim Hillel
Sponsor
Swiss Federal Railways (SBB)
Period
March 01, 2019-March 01, 2020
Collaborator
Janody Pougala
LaTeX description

Expertise

  • Transportation Research
  • Operations Research
  • Discrete Choice Models

Methods

Modeling, optimization, simulation