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Dakota Reference Manual
Version 6.15
Explore and Predict with Confidence
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State variables provide a convenient mechanism for managing additional model parameterizations such as mesh density, simulation convergence tolerances, and time step controls. These are typically fixed parameters for a given Dakota run.
By default, only parameter studies and design of experiments methods will vary state variables. This can be overridden for other methods by specifying active
state
or active
all
.
When a state variable is held fixed, the specified initial_state
is used as its sole value. If the state variable is defined only by its bounds, then the initial_state
will be inferred from the variable bounds or valid set values.
If a method iterates on a state variable, the variable is treated as a design variable with the given bounds, or as a uniform uncertain variable with the given bounds.