Epistemic uncertainty
Definition: Systematic uncertainty due to limited data, measurement precision, model or process specification, or lack of knowledge. That is, uncertainty due to lack of knowledge that could, in theory, be reduced through conducting additional research to increase understanding. Such uncertainty is said to be personal, since knowledge differs across scientists, and temporary since it can change as new data become available.
Related terms: Aleatoric uncertainty, Knightian uncertainty
Reference: Der Kiureghian and Ditlevsen (2009); Ferson et al., (2004) Alternative terms:Â Epistemic uncertainty is also known as knowledge uncertainty, subjective uncertainty, or type B uncertainty. Alternative terms: Epistemic uncertainty is also known as knowledge uncertainty, subjective uncertainty, or type B uncertainty.
Drafted and Reviewed by: Bradley Baker, Jamie P. Cockcroft, Elizabeth Collins, Charlotte R. Pennington, Graham Reid