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R. Iman (1987)
A Matrix-Based Approach to Uncertainty and Sensitivity Analysis for Fault Trees1Risk Analysis, 7
K. Nakashima, K. Yamato (1982)
Variance-Importance of System ComponentsIEEE Transactions on Reliability, R-31
Bhattacharyya Bhattacharyya, Amed Amed (1982)
Establishing Data Requirements for Plant Probabilistic Risk AssessmentTransactions of the American Nuclear Society, 43
J. Goodnight (1979)
A Tutorial on the SWEEP OperatorThe American Statistician, 33
The analysis of probabilistic fault trees often involves the investigation of events that contribute both to the frequency of the top event and to the uncertainty in this frequency. This paper provides a discussion of three measures of the contribution of an event to the total uncertainty in the top event. These measures are known as uncertainty importance measures. Two of these measures are new developments. Each of the measures is shown to have unique advantages and disadvantages. The three measures are based on, respectively, the expected reduction in the variance of the top‐event frequency should the uncertainty in an event be resolved, the same measure based on the log frequency, and a measure based on shifts in the quantiles of the distribution of top‐event frequency.
Risk Analysis – Wiley
Published: Sep 1, 1990
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