lenskit.graphs.lightgcn.LightGCNScorer
======================================

.. py:class:: lenskit.graphs.lightgcn.LightGCNScorer(config = None, **kwargs)
   

   Bases: :py:obj:`lenskit.training.UsesTrainer`, :py:obj:`lenskit.pipeline.components.Component`\ [\ :py:obj:`lenskit.data.ItemList`\ ]


   Scorer using :class:`LightGCN` :cite:p:`heLightGCNSimplifyingPowering2020`.

   :Stability: Experimental


   .. py:attribute:: config
      :type:  LightGCNConfig

      The component configuration object.  Component classes that support
      configuration **must** redefine this attribute with their specific
      configuration class type, which can be a Python dataclass or a Pydantic
      model class.


   .. py:attribute:: users
      :type:  lenskit.data.Vocabulary


   .. py:attribute:: items
      :type:  lenskit.data.Vocabulary


   .. py:attribute:: model
      :type:  torch_geometric.nn.LightGCN


   .. py:method:: to(device)

      Move the model to a different device.



   .. py:method:: __call__(query, items)

      Generate item scores for a user.

      Note that user and items are both user and item IDs, not positions.



   .. py:method:: create_trainer(data, options)

      Create a model trainer to train this model.