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: <a href='/glossary/aleatoric-uncertainty/'>Aleatoric uncertainty</a>, Knightian uncertainty

References: Der Kiureghian and Ditlevsen (2009), & Ferson et al., (2004)

Drafted and Reviewed by: Bradley Baker, Jamie P. Cockcroft, Elizabeth Collins, Charlotte R. Pennington, Graham Reid

Note that we are currently working on an automated mechanism to link references cited above with their full-length version that can be found at https://forrt.org/glossary/references with all references used so far.