========================================
Reconstructing Improper Values with C4.5
========================================
:doc:`/SingleStepClassifiers/NonCausalStep/index`

This step applies the *C4.5* algorithm to reconstruct any improper values.

.. rubric:: Input Parameters

1. Input data including improper values

2. Definition of improper values ('nan', 'inf', or 'null', etc.)

.. rubric:: Output Parameters

1. Output data excluding improper values

.. rubric:: Workflow

.. image:: workflow.svg


.. rubric:: Algorithm

:doc:`/Algorithms/C45/index`

.. rubric:: References

- J.\  Han, M. Kamber and J. Pei, Data Mining - Concepts and Techniques, 3rd ed., Amsterdam: Morgan Kaufmann Publishers, 2012.