.. _`Group K-fold Cross Validation`:

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

Group K-fold Cross Validation
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. image:: Kfold.svg
   :width: 48


K-fold variant with non-overlapping groups.The same group will not appear in two different folds (the number of distinct groups has to be at least equal to the number of folds).

*Configuration*:


  - *n_splits*

    Number of folds, must be atleast 2



*Input ports*:
    **X** : table
        X
    **Y** : table
        Y
    **G** : table
        G

*Output ports*:
    **out** : [(table, table)]
        out



**Number of splits** (n_splits)
    Number of folds, must be atleast 2

.. automodule:: node_crossvalidation

.. class:: CrossVal_GroupKFold