lenskit.basic.history.UserTrainingHistoryLookup
===============================================

.. py:class:: lenskit.basic.history.UserTrainingHistoryLookup(config = None, **kwargs)
   

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


   Look up a user's history from the training data.

   :Stability: Caller


   .. py:attribute:: config
      :type:  LookupConfig

      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:: interactions
      :type:  lenskit.data.MatrixRelationshipSet | None


   .. py:method:: is_trained()

      Query if this component has already been trained.



   .. py:method:: train(data, options = TrainingOptions())

      Train the model to learn its parameters from a training dataset.

      :param data: The training dataset.
      :param options: The training options.



   .. py:method:: __call__(query)

      Look up the user's data from the training history (if needed), and
      ensure a fully-populated :class:`RecQuery`.