.. _method-bayes_calibration-muq-multilevel_mcmc:

"""""""""""""""
multilevel_mcmc
"""""""""""""""


Use the Multi-level MCMC algorithm




**Topics**


bayesian_calibration



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

   method-bayes_calibration-muq-multilevel_mcmc-initial_chain_samples
   method-bayes_calibration-muq-multilevel_mcmc-target_variance
   method-bayes_calibration-muq-multilevel_mcmc-greedy_resampling_factor
   method-bayes_calibration-muq-multilevel_mcmc-subsampling_steps


**Specification**

- *Alias:* None

- *Arguments:* None

- *Default:* dram


**Child Keywords:**

+-------------------------+--------------------+------------------------------+-----------------------------------------------+
| Required/Optional       | Description of     | Dakota Keyword               | Dakota Keyword Description                    |
|                         | Group              |                              |                                               |
+=========================+====================+==============================+===============================================+
| Optional                                     | `initial_chain_samples`__    | Number of initial samples for each level      |
+----------------------------------------------+------------------------------+-----------------------------------------------+
| Required                                     | `target_variance`__          | Target variance for the greedy algorithm      |
+----------------------------------------------+------------------------------+-----------------------------------------------+
| Optional                                     | `greedy_resampling_factor`__ | Greedy resampling factor                      |
+----------------------------------------------+------------------------------+-----------------------------------------------+
| Optional                                     | `subsampling_steps`__        | Number of samples at each level               |
+----------------------------------------------+------------------------------+-----------------------------------------------+

.. __: method-bayes_calibration-muq-multilevel_mcmc-initial_chain_samples.html
__ method-bayes_calibration-muq-multilevel_mcmc-target_variance.html
__ method-bayes_calibration-muq-multilevel_mcmc-greedy_resampling_factor.html
__ method-bayes_calibration-muq-multilevel_mcmc-subsampling_steps.html



**Description**


Use the multi-level algorithm (:cite:p:`Seelinger2021ACM`) from the MUQ library.