.. _method-sampling-sample_type-low_discrepancy-rank_1_lattice-generating_vector-predefined:

""""""""""
predefined
""""""""""


Specify a predefined generating vector



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

   method-sampling-sample_type-low_discrepancy-rank_1_lattice-generating_vector-predefined-kuo
   method-sampling-sample_type-low_discrepancy-rank_1_lattice-generating_vector-predefined-cools_kuo_nuyens


**Specification**

- *Alias:* None

- *Arguments:* None

- *Default:* Default generating vector


**Child Keywords:**

+-------------------------+--------------------+----------------------+-----------------------------------------------+
| Required/Optional       | Description of     | Dakota Keyword       | Dakota Keyword Description                    |
|                         | Group              |                      |                                               |
+=========================+====================+======================+===============================================+
| Required (Choose One)   | Predefined         | `kuo`__              | A generating vector that provides up to 2\    |
|                         | Generating Vectors |                      | :sup:`20` points in up to 3600 dimensions     |
|                         |                    +----------------------+-----------------------------------------------+
|                         |                    | `cools_kuo_nuyens`__ | A generating vector that provides up to 2\    |
|                         |                    |                      | :sup:`20` points in up to 250 dimensions      |
+-------------------------+--------------------+----------------------+-----------------------------------------------+

.. __: method-sampling-sample_type-low_discrepancy-rank_1_lattice-generating_vector-predefined-kuo.html
__ method-sampling-sample_type-low_discrepancy-rank_1_lattice-generating_vector-predefined-cools_kuo_nuyens.html



**Description**


Dakota provides two predefined generating vectors:

- :dakkw:`method-sampling-sample_type-low_discrepancy-rank_1_lattice-generating_vector-predefined-cools_kuo_nuyens` (default): generates up to 2\ :sup:`20` points in up to 250 dimensions :cite:p:`Cools06`.
- :dakkw:`method-sampling-sample_type-low_discrepancy-rank_1_lattice-generating_vector-predefined-kuo`: generates up to 2\ :sup:`20` points in up to 3600 dimensions :cite:p:`Kuo06`.




**Examples**



.. code-block::

    environment
      tabular_data
        tabular_data_file = 'samples.dat'
        freeform

    method
      sampling
        samples 1024
        sample_type
          low_discrepancy
            rank_1_lattice
              generating_vector predefined kuo

    variables
      uniform_uncertain = 3
        lower_bounds 0.0 0.0 0.0
        upper_bounds 1.0 1.0 1.0

    interface
      analysis_drivers = 'genz'
      analysis_components = 'cp1'
      direct

    responses
      response_functions = 1
      no_gradients
      no_hessians



