.. _model-surrogate-global-gaussian_process-surfpack-export_model:

""""""""""""
export_model
""""""""""""


Exports surrogate model in user-specified format(s)



**Topics**


surrogate_models


.. toctree::
   :hidden:
   :maxdepth: 1

   model-surrogate-global-gaussian_process-surfpack-export_model-filename_prefix
   model-surrogate-global-gaussian_process-surfpack-export_model-formats


**Specification**

- *Alias:* None

- *Arguments:* None


**Child Keywords:**

+-------------------------+--------------------+---------------------+-----------------------------------------------+
| Required/Optional       | Description of     | Dakota Keyword      | Dakota Keyword Description                    |
|                         | Group              |                     |                                               |
+=========================+====================+=====================+===============================================+
| Optional                                     | `filename_prefix`__ | User-customizable portion of                  |
|                                              |                     | exported/imported surrogate model filenames   |
+----------------------------------------------+---------------------+-----------------------------------------------+
| Required                                     | `formats`__         | Formats for surrogate model export            |
+----------------------------------------------+---------------------+-----------------------------------------------+

.. __: model-surrogate-global-gaussian_process-surfpack-export_model-filename_prefix.html
__ model-surrogate-global-gaussian_process-surfpack-export_model-formats.html



**Description**


Export the surrogate for later re-import to Dakota or evaluation using
the surfpack exectuable ( ``bin/surfpack``) or a user-developed
tool. Export format is controlled using the ``formats``
specification. Four formats are available in Dakota; however, not all
have been enabled for all surrogates.

The four formats are:


- ``text_archive`` - Plain-text, machine-readable archive for re-import or use with the surfpack executable

- ``binary_archive`` - Binary, machine-readable archive for re-import or use with the surfpack executable

- ``algebraic_file`` - Plain-text, human-readable file intended for use with user-created tools; not compatible with Dakota or the surfpack executable

- ``algebraic_console`` - Print the model in algebraic format to the screen; not compatible with Dakota or the surfpack executable


These global surrogates can be exported in all four formats:


- Gaussian process (keyword ``gaussian_process`` surfpack)

- Artificial neural network (keyword ``neural_network``)

- Radial basis Funtions (keyword ``radial_basis``)

- Polynomial (keyword ``polynomial``)


However, for experimental Gaussian Process and polynomial models as
well as Multivariate Adaptive Regression Spline (keyword ``mars``) and
moving least squares (keyword ``moving_least_squares``) models, only
``text_archive`` and ``binary_archive`` formats may be used.

Currently, no other surrogate models can be exported.

*Default Behavior*
<p>No export.

*Expected Output*
<p>Output depends on selected format; see the ``formats`` specification.

*Additional Discussion*
<p>The Dakota examples include a demonstration of using the surfpack
executable with an exported model file.


