APPROACHES TO MODEL TRANSFERABILITY AND UPDATING: THE COMBINED TRANSFER ESTIMATOR

The idea of model transferability is to use previously estimated model parameters from a different area for model estimation. The combined transfer estimator is based on the mean squares error criterion and extends the Bayesian procedure to explicitly account for the presence of a transfer bias. The suggested estimator is easy to apply because it is expressed as a linear combination of the direct estimation results and the previously estimated parameters. The combined estimator is shown to have superior accuracy in a mean square error sense to a direct (unbiased nontransfer) estimator whenever the transfer bias is relatively small. Numerical examples of the transfer region--where the combined estimator is superior to the direct estimator--are provided.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1987/1139/1139-001.pdf
• Record URL:
  • https://scholar.google.com/scholar_lookup?title=APPROACHES+TO+MODEL+TRANSFERABILITY+AND+UPDATING%3A+THE+COMBINED+TRANSFER+ESTIMATOR&author=M.+Ben-Akiva&author=D.+Bolduc&publication_year=1987
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• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Passenger Travel Demand Forecasting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
• Authors:
  • Ben-Akiva, Moshe
  • Bolduc, Denis
• Publication Date: 1987

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 1-7
• Monograph Title: Urban travel forecasting
• Serial:
  • Transportation Research Record
  • Issue Number: 1139
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Accuracy; Estimating; Mathematical models; Statistical bias; Transfers; Transportation
• Uncontrolled Terms: Transportation models
• Old TRIS Terms: Transferring
• Subject Areas: Planning and Forecasting; Transportation (General); I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00476105
• Record Type: Publication
• ISBN: 0309046505
• Files: TRIS, TRB, ATRI
• Created Date: Sep 30 1988 12:00AM