.. _label-compound-backend:

Independence Atom Backend
-------------------------

.. py:currentmodule:: GLDF.hccd
    
The composition layer operates (exclusively) on primitives exposed by the
:py:mod:`data_processing<GLDF.data_processing>` layer, with
:py:mod:`data_management<GLDF.data_processing>` logically detached (accessed
only thourgh the :py:mod:`data_processing<GLDF.data_processing>` layer).
It uses only the following composed independence-atom backend:

.. autoclass:: IProvideIndependenceAtoms()
    :no-index-entry:
    :class-doc-from: class
    :members:
    :undoc-members:

For PCMCI-familiy algortihms, the independence-atom backend further
is notified of transitions between PC1 and MCI phase through the callbacks
of the following interface:


.. autoclass:: IHandleExplicitTransitionToMCI()
    :no-index-entry:
    :class-doc-from: class
    :members:
    :undoc-members: