Dakota Reference Manual  Version 6.15
Explore and Predict with Confidence
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state_variables

Description

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.

Related Topics

Related Keywords

  • continuous_state : State variable - continuous
  • discrete_state_range : State variables - discrete range-valued
  • discrete_state_set : State variable - discrete set-valued
  • integer : Discrete state variables, each defined by a set of permissible integers
  • real : Discrete state variables, each defined by a set of permissible real numbers
  • string : String-valued discrete state set variables