# Uncertainty Quantification **Aliases:** UQ **Entity class:** Predictive-science discipline ## Definition **Uncertainty quantification** characterizes and manages uncertainty using models, observations, statistics, and analysis. It includes uncertainty propagation, sensitivity analysis, inference, calibration, experimental design, validation, and decision-making under uncertainty. UQ prevents a model from presenting one answer as certain when measurements are sparse, identities ambiguous, parameters unknown, or the model itself incomplete. ## Relationships - **broader assurance:** [[wiki/Verification Validation and Uncertainty Quantification|Verification, Validation, and Uncertainty Quantification]]. - **inference:** [[wiki/Inverse Problem|Inverse Problems]] and [[wiki/PDE-Constrained Inverse Problem|PDE-Constrained Inverse Problems]]. - **Oden groups:** [[wiki/PHO-ICES|PHO-ICES]] and [[wiki/PECOS|PECOS]]. - **social-analytic discipline:** [[wiki/Inverse Problems in Counterterrorism Networks|Inverse Problems in Counterterrorism Networks]]. ## Sources / Provenance - [Oden/Willcox Group — Uncertainty Quantification](https://kiwi.oden.utexas.edu/research/what-is-parameterized-model-reduction) ## Austin defense-technology role Analysis characterizes uncertainty in measurements, model inputs, outputs, and consequential decisions. The article connects it with calibrated trust in predictive simulation. Nuclear-stockpile requirements supplied a consequential setting for predictive computation. Verification addresses the implementation, validation compares the model with physical evidence, and uncertainty analysis qualifies the decision. The university research lineage connects national laboratories, UT methods, TACC computation, and experiments without treating a successful method in one domain as automatic validation in another. ### Regional relationships - **technical or institutional context:** [[wiki/Verification Validation and Uncertainty Quantification|Verification Validation and Uncertainty Quantification]]. - **technical or institutional context:** [[wiki/Uncertainty Propagation|Uncertainty Propagation]]. - **regional master router:** [[wiki/Austin Defense Technology|Austin Defense Technology]]. - **source article:** [[articles/How Austin Became a Different Kind of Defense Tech Epicenter|How Austin Became a Different Kind of Defense Tech Epicenter]]. - **civilian supplier and participation economy:** [[collections/The Civilian Intelligence Marketplace|The Civilian Intelligence Marketplace]]. - **intelligence architecture:** [[collections/Terrorism, Counterterrorism, and the Intelligence Environment|Terrorism, Counterterrorism, and the Intelligence Environment]]. ### Austin sources - [[articles/How Austin Became a Different Kind of Defense Tech Epicenter#The Executable Loop|Austin defense-tech article — The Executable Loop]] — October 2026 revision; source for this entry’s regional role. - [U.S. Department of Energy, Timeline of Events: 2008](https://www.energy.gov/lm/timeline-events-2008) - [UT News, Predictive Science Research Gets Major Boost Thanks to the Department of Energy](https://news.utexas.edu/2020/10/05/predictive-science-research-gets-major-boost-thanks-to-the-department-of-energy/) ## Connected Austin capabilities [[wiki/Partially Observed System|Partially Observed System]]. These entries identify associated implementations, people, methods, and institutional contexts in [[articles/How Austin Became a Different Kind of Defense Tech Epicenter|How Austin Became a Different Kind of Defense Tech Epicenter]]. [[wiki/Austin Defense Technology|Austin Defense Technology]] supplies their regional arrangement; [[collections/The Civilian Intelligence Marketplace|The Civilian Intelligence Marketplace]] supplies the wider supplier and participation economy.