Estimation of Parameters of Network Equilibrium Models: A Maximum Likelihood Method and Statistical Properties of Network Flow

Shoichiro Nakayama and Richard D.
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Shoichiro Nakayama: Kanazawa University, Japan and University of Leeds
Richard D.: Connors and David Watling, University of Leeds

Chapter Chapter 3 in Transportation and Traffic Theory 2009: Golden Jubilee, 2009, pp 39-56 from Springer

Abstract: Abstract Estimation of the parameters in network equilibrium models, including OD matrix elements, is essential when applying the models to real-world networks. Link flow data are convenient for estimating parameters because it is relatively easy for us to obtain them. In this study, we propose a maximum likelihood method for estimating parameters of network equilibrium models using link flow data, and derive first and second derivatives of the likelihood function under the equilibrium constraint. Using the likelihood function and its derivatives, t-values and other statistical indices are provided to examine the confidence interval of estimated parameters and the model’s goodness-of-fit. Also, we examine which conditions are needed for consistency, asymptotic efficiency, and asymptotic normality for the maximum likelihood estimators with non-I.I.D. link flow data. In order to investigate the validity and applicability, the proposed ML method is applied to a simple network and the road network in Kanazawa City, Japan.

Keywords: Central Limit Theorem; Maximum Likelihood Method; Route Choice; Transportation Research Part; Asymptotic Efficiency (search for similar items in EconPapers)
Date: 2009
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-1-4419-0820-9_3

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DOI: 10.1007/978-1-4419-0820-9_3

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