Chapter

Estimating and Applying Uncertainty in Assessment models

Thomas B. Kirchner

in Radiological Risk Assessment and Environmental Analysis

Published in print July 2008 | ISBN: 9780195127270
Published online September 2008 | e-ISBN: 9780199869121 | DOI: http://dx.doi.org/10.1093/acprof:oso/9780195127270.003.0011
 						Estimating and Applying Uncertainty in Assessment models

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This chapter discusses probabilistic methods for conducting uncertainty analysis, methods that can be use to evaluate both local and global sensitivity of models to parameters, and issues related to the validation of models that express uncertainty in their results. Analytical and Monte Carlo methods for propagating uncertainty through models are described, along with potential limitations of these methods and the problems that can be encountered. The chapter introduces methods for assigning distributions to model parameters. Statistical methods that can be used to help interpret and express the results of probabilistic uncertainty analyses, such as confidence and tolerance intervals, are introduced and their pertinent assumptions are described. Various statistical analyses that can be used for sensitivity analysis and their associated sampling designs are reviewed.

Keywords: uncertainty analysis; sensitivity analysis; validation; Monte Carlo; distribution; statistics; tolerance interval

Chapter.  27685 words.  Illustrated.

Subjects: Animal Pathology and Diseases

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