The report describes and tests a gravity type model for updating estimates of trade coefficients which are used in multiregional input-output models. The 1963 coefficients are derived from estimates of gross flows of commodities by industry and region of origin and by region of destination. The model could use a variety of data inputs, but Census industry information would probably be the most useful. The model was tested for coal, electricity, machinery, and electronic components on both a 9- and a 51-region matrix. The results demonstrated that the model showed promise, particularly with aggregated commodity groups. Although more testing is needed to recommend this tool for general application, the authors conclude that the model may well be superior to using outdated coefficients for forecasting flows of industries with rapidly changing patterns of production and consumption.

  • Supplemental Notes:
    • Sponsored in part by Federal Railroad Administration, Washington, DC.
  • Corporate Authors:

    Massachusetts Institute of Technology

    Department of Urban Studies and Planning, 77 Massachusetts Avenue
    Cambridge, MA  United States  02139

    Economic Development Administration

    Economic Research Division
    Washington, DC  United States  20230

    Federal Railroad Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Trainer, G
    • Howland, M
  • Publication Date: 1979-5

Media Info

  • Pagination: 57 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00305310
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: EDA/ERD-80/001
  • Contract Numbers: EDA-OER-554-G-78-8, EDA-OER-554-G-79-5
  • Files: TRIS, USDOT
  • Created Date: Feb 11 1980 12:00AM