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Title: Bottom-up and Top-Down Uncertainty Quantification for Measurements

Journal Article · · Chemometrics and Intelligent Laboratory Systems
 [1];  [2];  [1];  [3];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. Juelich (Germany)

Several recent papers address improved uncertainty quantification (UQ) for measurements used in nuclear safeguards. This paper reviews progress and presents new results for bottom-up (first principles) and top-down (empirical) UQ for safeguards, where the main quantitative measure of uncertainty is the total measurement error standard deviation (SD), which includes both random and systematic error components. The five main UQ topics addressed here include: (1) impact of making data-driven choices in SD estimation; (2) use of approximate Bayesian computation (ABC) for both bottom-up and top-down UQ; (3) computational calibration; (4) revisions to the guide to the expression of uncertainty in measurement (GUM), and (5) critique of a recently-suggested “Unified Theory of Measurement Errors and Uncertainties.”

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Laboratory Directed Research and Development (LDRD) Program
Grant/Contract Number:
89233218CNA000001
OSTI ID:
1756810
Alternate ID(s):
OSTI ID: 1776981
Report Number(s):
LA-UR-20-27332; TRN: US2205680
Journal Information:
Chemometrics and Intelligent Laboratory Systems, Vol. 211, Issue C; ISSN 0169-7439
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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