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User Guide
API Reference
Release Notes
Research
Indices

GitHub
Mastodon
BlueSky

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Core

lenskit
lenskit.data
lenskit.pipeline
lenskit.operations
lenskit.diagnostics
lenskit.training
lenskit.config

Components

lenskit.als
lenskit.basic
lenskit.flexmf
lenskit.funksvd
lenskit.knn
lenskit.sklearn
- lenskit.sklearn.nmf
  - lenskit.sklearn.nmf.NMFConfig
  - lenskit.sklearn.nmf.NMFScorer
- lenskit.sklearn.svd
  - lenskit.sklearn.svd.BiasedSVDConfig
  - lenskit.sklearn.svd.BiasedSVDScorer
lenskit.stochastic
- lenskit.stochastic.StochasticTopNConfig
- lenskit.stochastic.StochasticTopNRanker

Evaluation

lenskit.batch
lenskit.metrics
lenskit.splitting
lenskit.tuning

Add-Ons

lenskit.implicit
lenskit.hpf
- lenskit.hpf.HPFConfig
- lenskit.hpf.HPFScorer
lenskit.graphs
- lenskit.graphs.lightgcn

Implementation Helpers

lenskit.lazy
- lenskit.lazy.Lazy
lenskit.logging
lenskit.math
- lenskit.math.solve
- lenskit.math.sparse
lenskit.parallel
lenskit.random
lenskit.stats
lenskit.testing
lenskit.torch

API Reference
lenskit.data
lenskit.data.sources

lenskit.data.sources#

Import code for various data sources.

Submodules#

`amazon`	Load Amazon ratings data from Julian McAuley's group.
`movielens`	Code to import MovieLens data sets into LensKit.

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© Copyright 2018–2025 Drexel University, Boise State University, and collaborators.

LensKit version 2026.2.1.

This material is partially based upon work supported by the National Science Foundation under Grant Nos. 17-51278 and 24-15042. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation, Drexel University, or Boise State University.