Tests of the scaling approach to transferring disaggregate travel demand models.

Author(s)
Gunn, H.F. Ben-Akiva, M.E. & Bradley, M.A.
Year
Abstract

The transferability of disaggregate travel demand models is viewed as a problem of predicting the values of model parameters in a new context by using the estimated values from an existing model. The approach tested in this paper is to use survey data from the new context to estimate transfer-scale parameters that correct for context-specific effects. The empirical tests investigate a variety of transfer models with different numbers of transfer-scale parameters ranging from complete reestimation of the entire model specification to none at all. The results support the partial transfer model in which scale parameters are estimated for a limited number of functional subgroups of variables such as alternative specific constants, level-of-service attributes, and personal characteristics.

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Publication

Library number
C 14630 (In: C 14627 S) /72 /
Source

In: Transportation demand analysis and issues in travel behavior, Transportation Research Record No. 1037, p. 21-30, 20 ref.

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