Dakota Reference Manual  Version 6.4
Large-Scale Engineering Optimization and Uncertainty Analysis
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string


String (categorical) valued point histogram variable

Specification

Alias: none

Argument(s): INTEGER

Required/Optional Description of Group Dakota Keyword Dakota Keyword Description
Optional pairs_per_variable

Number of pairs defining each histogram point string variable

Required abscissas

String abscissas for a point histogram

Required counts

Counts for string-valued point histogram

Optional initial_point

Initial values

Optional descriptors

Labels for the variables

Description

This probability mass function is string-valued; the abscissa values must all be strings. The n abscissa values are paired with n counts which indicate the relative frequency (mass) of each string relative to the other specified strings.

Examples

histogram_point_uncertain
  string = 2
  pairs_per_variable = 2            3 
  abscissas          = 'no' 'yes'   'function1' 'function2' 'function3'
  counts             = 1     1      1           2           1
  descriptors        = 'vote'       'which_function'

Here there are two variables, the first one ('vote') has two possible string values 'yes' and 'no' which are equally probable. The second one has three options for 'which_function', and 'function2' is twice as probable as 'function1' or 'function3'.