Data Abstractions#

The lenskit.data module provides the core data abstractions LensKit uses to represent recommender system inputs and outputs.

Data Sets#

`Dataset`	Representation of a data set for LensKit training, evaluation, etc.
`from_interactions_df`	Create a dataset from a data frame of ratings or other user-item interactions.
`load_movielens`	Load a MovieLens dataset.
`load_movielens_df`	Load the ratings from a MovieLens dataset as a raw data frame.

`ItemList`	Representation of a (usually ordered) list of items, possibly with scores and other associated data; many components take and return item lists.
`ItemListCollection`	A collection of item lists.
`UserIDKey`	Key type for user IDs.
`GenericKey`	Built-in immutable sequence.

Representation of a the data available for a recommendation query.

Vocabularies of terms, tags, entity IDs, etc.