5 Aleatory Variability and Epistemic Uncertainty

5-15 Aleatory Variability and Epistemic UncertaintyAleatory Variability and Epistemic Uncertainty are terms used in seismic hazard analysisthat are not commonly used in other fields, but the concepts are well Variability is the natural randomness in a process. For discrete variables, therandomness is parameterized by the probability of each possible value. For continuousvariables, the randomness is parameterized by the probability density Uncertainty is the scientific Uncertainty in the model of the process. It is due tolimited data and knowledge. The Epistemic Uncertainty is characterized by alternativemodels. For discrete random variables, the Epistemic Uncertainty is modelled byalternative probability distributions. For continuous random variabiles, the epstemicuncertainty is modelled by alternative probability density functions.

5-1 5 Aleatory Variability and Epistemic Uncertainty Aleatory variability and epistemic uncertainty are terms used in seismic hazard analysis that are not commonly used in …

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