Dakota Reference Manual  Version 6.13
Explore and Predict with Confidence
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export_sample_sequence


Enable exporting output sample sequences on files

Specification

Alias: none

Argument(s): none

Child Keywords:

Required/Optional Description of Group Dakota Keyword Dakota Keyword Description
Optional
(Choose One)
Tabular Format (Group 1) custom_annotated

Export sample sequences enabling file format customization

annotated

Export sample sequences with descriptors

freeform

Export sample sequences without heading descriptors

Description

If present, separate output files are written for each model form and discretization level. For the multilevel technique, separate files are written for the samples used at each iteration (pilot samples are denoted by iteration 0).

Default Behavior

If not specified, the annotated format is assumed.

Expected Output

Separate output files are generated according to the following format: {ml/cv}_{interface_id}_{iteration_number}_{level_number}_{number_of_samples}.dat.

If one single model form is present the first field of the file name is ml_, otherwise ml_ is used for the HF model and cv_ is used for the LF one.

Examples

The following method block

method,
    model_pointer = 'HIERARCH'
        multilevel_sampling
      pilot_samples = 20 seed = 1237
      convergence_tolerance = .01
      output silent
      export_sample_sequence

results in enabling the sample output on file with the defaults annotated format.

The following variables block

variables,
    id_variables = 'LF_VARS'
    uniform_uncertain = 7
      lower_bounds    = 7*-1.
      upper_bounds    = 7* 1.
    discrete_state_set
      integer = 2
        num_set_values = 4 1
        set_values = 5 15 30 60 # number of spatial coords
                     3      # number of Fourier solution modes
        initial_state = 5 3
        descriptors 'N_x' 'N_mod'

illustrates how to define descriptors for a model form. For instance, in this case the descriptors N_x and N_mod are reported in the sample sequences files for all the format.