.. _model-active_subspace-normalization:

"""""""""""""
normalization
"""""""""""""


Normalize gradient samples


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

   model-active_subspace-normalization-mean_value
   model-active_subspace-normalization-mean_gradient
   model-active_subspace-normalization-local_gradient


**Specification**

- *Alias:* None

- *Arguments:* None


**Child Keywords:**

+-------------------------+--------------------+--------------------+-----------------------------------------------+
| Required/Optional       | Description of     | Dakota Keyword     | Dakota Keyword Description                    |
|                         | Group              |                    |                                               |
+=========================+====================+====================+===============================================+
| Required (Choose One)   | Normalize By...    | `mean_value`__     | Normalize by sample mean of function values   |
|                         |                    +--------------------+-----------------------------------------------+
|                         |                    | `mean_gradient`__  | Normalize by sample mean of gradient norms    |
|                         |                    +--------------------+-----------------------------------------------+
|                         |                    | `local_gradient`__ | Normalize each gradient sample by its norm    |
+-------------------------+--------------------+--------------------+-----------------------------------------------+

.. __: model-active_subspace-normalization-mean_value.html
__ model-active_subspace-normalization-mean_gradient.html
__ model-active_subspace-normalization-local_gradient.html



**Description**


Normalize the matrix of sampled gradients before identifying subspace.

*Default Behavior*

The default is :dakkw:`model-active_subspace-normalization-local_gradient`


