Title: The Calibration of Traffic Simulation Models : Report on the assessment of different Goodness of Fit measures and Optimization Algorithms MULTITUDE Project – COST Action TU0903
Publisher: Publications Office of the European Union
Publication Year: 2012
JRC N°: JRC68403
ISBN: 978-92-79-22812-4
ISSN: 1831-9424
Other Identifiers: EUR 25188 EN
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC68403
DOI: 10.2788/7975
Type: EUR - Scientific and Technical Research Reports
Abstract: In the last decades, simulation optimization has received considerable attention from both researchers and practitioners. Simulation optimization is the process of finding the best values of some decision variables for a system whose performance is evaluated using the output of a simulation model. A possible example of simulation optimization is the model calibration. In traffic modelling this topic is particularly relevant since the solutions to the methodological issues arising when setting up a calibration study cannot be posed independently. This calls for methodologies able to check the robustness of a calibration framework as well as further investigations of the issue, in order to identify possible “classes” of problems to be treated in a similar way. Therefore in the present work, first a general method for verifying a traffic micro-simulation calibration procedure (suitable in general for simulation optimization) is described, based on a test with synthetic data. Then it is applied, my means of two different case studies, to draw inferences on the effect that different combinations of parameters to calibrate, optimization algorithm, measures of Goodness of Fit and noise in the data may have on the optimization problem. Results showed the importance of verifying the calibration procedure with synthetic data. In addition they ascertained the need for global optimization solutions, giving new insights into the topic. Research contained within this paper benefited from the participation in EU COST Action TU0903 MULTITUDE
JRC Directorate:Sustainable Resources

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