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Dakota Reference Manual
Version 6.15
Explore and Predict with Confidence
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Discrete, epistemic uncertain variable - strings within a set
This keyword is related to the topics:
Alias: none
Argument(s): INTEGER
Default: no discrete uncertain set string variables
Child Keywords:
Required/Optional | Description of Group | Dakota Keyword | Dakota Keyword Description | |
---|---|---|---|---|
Optional | elements_per_variable | Number of admissible elements for each set variable | ||
Required | elements | The permissible values for each discrete variable | ||
Optional | set_probabilities | This keyword defines the probabilities for the various elements of discrete sets. | ||
Optional | initial_point | Initial values for variables | ||
Optional | descriptors | Labels for the variables |
Discrete set variables may be used to specify categorical choices which are epistemic. For example, if we have three possible forms for a physics model (model 1, 2, or 3) and there is epistemic uncertainty about which one is correct, a discrete uncertain set may be used to represent this type of uncertainty.
This variable is defined by a set of strings, in which the discrete value may take any value within the string set (for example, the set may be defined as 'coarse', 'medium', and 'fine')
Other epistemic types include:
discrete_uncertain_set string num_set_values 2 3 set_values 'red' 'blue' 'coarse' 'medium' 'fine' descriptors 'ds1' 'ds2'