2.1. UQ: Uncertainty Quantification

The first selection panel, the user, must select from and enter data into is the UQ tab. In this panel, the user selects the UQ Engine to use for performing the uncertainty quantification calculations. Presently the only UQ Engine option available in the HydroUQ app is Dakota. Dakota, a state-of-the-art research application that is robust and provides many methods for optimization and UQ, a selection of which we utilize in this application. Dakota provides the user with a large number of different ways. For this reason, we have divided the methods into categories through a pull-down menu, as shown in figDakota. Once the type has been selected, several different methods are made available to the user.

Fig. 2.1.1 Dakota engine and category selection.

The following categories are available:

• 2.1.1. Forward Propagation
• 2.1.2. Sensitivity analysis
• 2.1.3. Reliability Analysis