REPRO MODELING IN THE PRACTICAL UTILIZATION OF COMPLEX ENVIRONMENTAL MODELS

MAJOR PROBLEMS IN THE PRACTICAL UTILIZATION OF MOST SOPHISTICATED ENVIRONMENTAL MODELS FOR DECISION MAKING EXIST. THESE PROBLEMS INCLUDE: (1) EXCESSIVE COMPUTATIONAL COST INVOLVED IN USING THE MODEL ITERATIVELY IN AN EVALUATION OR OPTIMIZATION CONTEXT; (2) EXCESSIVE PARAMETER SPECIFICATION REQUIRED IN ORDER TO EXERCISE THE MODEL; (3) DIFFICULTIES IN TRANSFERRING A COMPLEX MODEL FROM ONE INSTALLATION TO ANOTHER OR COMBINING SUCH MODELS; AND (4) DIFFICULTIES IN UNDERSTANDING THE IMPLICATIONS OF THE MODEL AND ITS LIMITATIONS. THE REPROMODELING CONCEPT INVOLVES DEVELOPING A MODEL OF THE MODEL WHICH ADDRESSES THESE PROBLEMS. THE PAPER DISCUSSES CLASSES OF MULTIVARIATE FUNCTIONAL FORMS SUITABLE FOR APPROXIMATION TO THE ORIGINAL MODEL, BOTH IN TERMS OF EFFICIENCY AND INTERPRETABILITY. EXAMPLAR APPLICATIONS IN MODELING TRAFFIC FLOW AND ITS IMPACT ON AIR QUALITY SERVE TO ILLUSTRATE THE APPROACH. /AUTHOR/

• Supplemental Notes:
  • Contract No F44620-71-C-0093
• Corporate Authors:

  Technology Service Corp

  ,    
• Authors:
  • Collins, D C
  • Meisel, W S
• Publication Date: 1972

Media Info

• Pagination: 9 p.

Subject/Index Terms

• TRT Terms: Air pollution; Decision making; Mathematical models; Simulation; Traffic flow
• Subject Areas: Highways; Operations and Traffic Management;

Filing Info

• Accession Number: 00227382
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: No Af-9749
• Files: TRIS
• Created Date: Jul 8 1973 12:00AM