.. index:: Case Generator

.. _Case_Generator:

Case Generator
==============

Based on the current conditional probability distribution the HUGIN Graphical User Interface can generate cases and save these into a file. 

Cases can be generated in two different ways: MCAR (Missing Completely at Random) or MAR (Missing at Random). 

MCAR sets some values to N/A by removing values of some nodes in the generated case set randomly (i.e., MCAR considers all the values in the generated cases and not one case at a time).

MAR randomly sets some values in a case to N/A based on auto-generated templates. These templates specify that if some nodes have a specific value, then the values of a subset of the nodes are randomly set to N/A. Note that the specification of the templates is generated randomly.

In both cases the conditional probability distribution is considered as a factor to the number of cases generated with a specific set of observations. Also in both MCAR and MAR it is possible to indicate the percentage of missing values.
To activate the case generator, the :ref:`Case Generator Button<Case_generator_button>` may be used.