The Validity and Credibility of Models for Badly Defined Systems

  • Peter Young

Abstract

If the dictionary definition were the sole criterion, a model would be considered valid if it was found to be well grounded, sound, cogent, logical, and incontestable. Similarly, a model would be deemed credible if it was deserving of or entitled to belief, or if it was plausible, tenable, or reasonable. All of these characteristics are, of course, desirable in a mathematical model of a physical system; but when used as the basis for the definition of model adequacy, they are clearly too subjective to provide useful and rigorous criteria for model evaluation.

Keywords

Biomass Phosphorus manifOld Covariance Transportation 

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Copyright information

© International Institute for Applied Systems Analysis, Laxenburg/Austria 1983

Authors and Affiliations

  • Peter Young
    • 1
  1. 1.Centre for Resource and Environmental StudiesAustralian National UniversityCanberraAustralia

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