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.

Item Data

ItemList

Representation of a (usually ordered) list of items, possibly with scores and other associated data; many components take and return item lists.

Identifiers

Vocabulary

Vocabularies of terms, tags, entity IDs, etc.