.. index:: EM Learning Wizard

.. _EM_wizard:

EM Learning Wizard
==================

To get assistance in the process of learning the CPT's of a Bayesian network from data, the EM Learning Wizard can be quite useful.  The EM Learning Wizard can be invoked from the "Wizards" item of the menu bar of the :ref:`Main Window<main_window>`.

Please note that the EM Learning Wizard is intended in situations where a network structure is already available. If a network structure is not available, one should consider using the complete :ref:`Learning Wizard<learning_wizard>`, which provides a superset of the functionalities provided by the EM Learning Wizard.

The EM Learning Wizard read data from a plain text file, provides a :ref:`data matrix<learning_wizard>` for editing and :ref:`preprocessing of the data<data_processing>` in different ways (e.g., variable exclusion, value replacements, and discretization). The wizard also enables you to provide prior knowledge about the conditional probability distributions and densities.

For more detailed information on the EM Learning Wizard, please consult the online help pages provided with the EM Learning Wizard.