.. _method-bayes_calibration-gpmsa-options_file:

""""""""""""
options_file
""""""""""""


File containing advanced QUESO/GPMSA options


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



**Specification**

- *Alias:* None

- *Arguments:* STRING

- *Default:* no advanced options file


**Description**


Allow power users to override default QUESO/GPMSA options
such as hyper-parameter priors, initial chain position, and proposal
covariance (including hyper-parameters), which might not be accessible
through Dakota user input.

*Default Behavior*
No advanced options used.

*Usage Tips*
The ``options_file`` offers a final override over other options
settings, which are applied with the folowing precedence:


1. QUESO library defaults

2. Dakota hard-coded defaults

3. Settings from Dakota input file

4. Settings from the advaned ``options_file``


