Dakota Reference Manual: build_surrogate

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build_surrogate

Construct moving least squares surrogate over active subspace

## Specification

Alias: none

Argument(s): none

Child Keywords:

| Required/Optional | Description of Group | Dakota Keyword | Dakota Keyword Description
--- | --- | --- | --- | ---
| Optional | refinement_samples | Number of supplementary surrogate build samples

## Description

Once the active subspace variables have been identified, replace the fullspace truth model with a moving least squares surrogate model over the reduced variables. The surrogate is constructed using the fullspace function value samples collected during subspace identification, possibly supplemented with additional refinement_samples in the fullspace.

Default Behavior

No surrogate is constructed by default.

## Examples

    model
      active_subspace
        id_model = 'SUBSPACE'
        actual_model_pointer = 'FULLSPACE'
        initial_samples  100
       build_surrogate
         refinement_samples 10