.. _method-approximate_control_variate-final_statistics:

""""""""""""""""
final_statistics
""""""""""""""""


Indicate the type of final statistics to be returned by a UQ method


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

   method-approximate_control_variate-final_statistics-estimator_performance
   method-approximate_control_variate-final_statistics-qoi_statistics


**Specification**

- *Alias:* None

- *Arguments:* None

- *Default:* qoi_statistics


**Child Keywords:**

+-------------------------+--------------------+---------------------------+---------------------------------------------+
| Required/Optional       | Description of     | Dakota Keyword            | Dakota Keyword Description                  |
|                         | Group              |                           |                                             |
+=========================+====================+===========================+=============================================+
| Required (Choose One)   | Final statistics   | `estimator_performance`__ | Return estimator performance as the final   |
|                         | type               |                           | results of a UQ method                      |
|                         |                    +---------------------------+---------------------------------------------+
|                         |                    | `qoi_statistics`__        | Return the quantity of interest (QoI)       |
|                         |                    |                           | statistics as the final results of a UQ     |
|                         |                    |                           | method                                      |
+-------------------------+--------------------+---------------------------+---------------------------------------------+

.. __: method-approximate_control_variate-final_statistics-estimator_performance.html
__ method-approximate_control_variate-final_statistics-qoi_statistics.html



**Description**


In nested execution contexts, an inner UQ method may
return either a final set of QoI statistics (e.g., for optimization of
moments or level mappings over design parameters within optimization under
uncertainty) or a set of performance metrics (e.g., for maximization
of performance over hyper-parameters within model tuning).

*Default Behavior*
Return a final set of QoI statistics.