.. _`Categorical Encoder`:

.. _`org.sysess.sympathy.machinelearning.category_encoder`:

Categorical Encoder
~~~~~~~~~~~~~~~~~~~

.. image:: categorical_encoder.svg
   :width: 48


Encodes all inputs into integer features, assumes that all inputs are Categorical

*Configuration*:


  - *max_categories*

    Maximum number of categories for any feature. Remaining values are encoded as 0. If None then no upper bound on number of features



*Attributes*:


  - *categories_*

    List of dictionaries that map each input feature into a categorical integer

  - *inv_categories_*

    List of dictionaries that map each output value into an corresponding input value



*Input ports*:


*Output ports*:
    **model** : model
        Model



**max_categories** (max_categories)
    Maximum number of categories for any feature. Remaining values are encoded as 0. If None then no upper bound on number of features

.. automodule:: node_preprocessing

.. class:: CategoryEncoderNode