01557862

Component

This paper formulates a model that extends the traditional panel discrete choice model to include social/spatial dependencies in the form of dyadic interactions between each pair of decision- makers. In addition, the formulation accommodates spatial correlation effects as well as allows a global spatial structure to be placed on the individual-specific unobserved response sensitivity to exogenous variables. The authors interpret these latter two effects, sometimes referred to as spatial drift effects, as originating from endogenous group formation. To the authors' knowledge, they are the first to suggest this endogenous group formation interpretation for spatial drift effects in the social/spatial interactions literature. The formulation is motivated in a travel mode choice context, but is applicable in a wide variety of other empirical contexts. Bhat’s (1) maximum approximate composite marginal likelihood (MACML) procedure is used for model estimation. A simulation exercise indicates that the MACML approach recovers the model parameters very well, even in the presence of high spatial dependence and endogenous group formation tendency. In addition, the simulation results demonstrate that ignoring spatial dependence and endogenous group formation when both are actually present will lead to bias in parameter estimation.

This paper was sponsored by TRB committee ADB10 Traveler Behavior and Values.

01550057

15-4295

English

0000-0002-0715-8121

19p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Figures; References; Tables

Choice models; Discrete systems; Maximum likelihood method; Mode choice; Panel studies; Social factors; Spatial analysis

Planning and Forecasting; Transportation (General); I72: Traffic and Transport Planning

Transportation Research Board Annual Meeting 2015 Paper #15-4295

TRIS, TRB, ATRI

Dec 30 2014 1:24PM