Add EASE + LightGCN

Backport release to add EASE and the FlexMF LightGCN to the 2025 release series.

What's Changed

• Backport progress bar threads to 2025.x series by @mdekstrand in #1009
• Backport co-occurrance speedups to 2025. by @mdekstrand in #1010
• Backport EASE to 2025 release series by @mdekstrand in #1015
• Backport LightGCN to the 2025 release series by @mdekstrand in #1046

Full Changelog: v2025.6.3...v2025.7.0

Adding EASE

Beta release with the EASE scorer.

Small fix - NumPy compat and LightGCN eval mode

This is a small bugfix / cleanup / compat fix for LensKit 2025.6.

What's Changed

• Remove tests that break with NumPy 2.4 ArrayLike changes by @mdekstrand in #977
• Put LightGCN in eval mode after training (2025) by @mdekstrand in #975
• Drop failing x86 wheel builds (2025) by @mdekstrand in #979

Full Changelog: v2025.6.2...v2025.6.3

NDCG bugfix with missing data

Fixes a bug where NDCG would divide by zero when there are no test items for the user.

What's Changed

• Resolves #956: Fix NDCG ZeroDivisionError by @samiravaez in #957
• Add E-R diagram to illustrate the data model by @mdekstrand in #962

Full Changelog: v2025.6.1...v2025.6.2

Bug + missing feature update for 2025.6

This is a quick bug-fix and missing-feature release for 2025.6.

6th 2025 Improvement

Another feature release for 2025, with some bug fixes as well.

See the release notes for user-friendly details.

What's Changed

• Update PyArrow to 22.x by @mdekstrand in #914
• Build Conda packages on MacOS Intel by @mdekstrand in #913
• Update locked dependencies and support Python 3.14 by @mdekstrand in #915
• CI build and test coverage updates by @mdekstrand in #919
• FA*IR: bug fixes and test updates by @samiravaez in #918
• ItemKNN: return neighbor counts + disable scoring parallelism by @mdekstrand in #922
• Add rank_biased_precision function that takes explicit weights by @sushobhan2024 in #923
• Add unified object representation function and more str/repr implementations by @mdekstrand in #924
• De-flake the stochastic tests by @mdekstrand in #925
• Add Bash-based CLI tests by @mdekstrand in #926
• Add concat and merge operations to ItemList by @mdekstrand in #927
• Reduce test burden for PyTorch-optimized components by @mdekstrand in #928
• Add initial support for session-based recommendation by @mdekstrand in #929
• Add cat_matrix to AttributeSet by @sushobhan2024 in #912
• FAIR: select protected items when they are ranked before unprotected items by @samiravaez in #939
• Add additional support and tests for generating session recommendations by @mdekstrand in #945
• Add co_occurrence method to relationships by @mdekstrand in #950

Full Changelog: v2025.5.0...v2025.6.0

Fifth improvement release

Some small renames and updates, along with entropy functions. Finalized a couple weeks ago but not released.

What's Changed

• Rename rank metric k arguments to n by @mdekstrand in #902
• Rename MetricAccumulator to MeasurementCollector by @mdekstrand in #906
• Add entropy and rank biased entropy by @sushobhan2024 in #890
• Add Rust test coverage support and clean up test CI by @mdekstrand in #909

Full Changelog: v2025.4.0...v2025.5.0

Fourth 2025 Improvement Release

These improvements are relatively minor, but are new features, so I'm bumping to 2025.4.

What's Changed

• Add additional Arrow CSR manipulation, including matrix transpose by @mdekstrand in #893
• Use pipelines to test scorers by @mdekstrand in #895
• Add PipelineProfiler to support collecting performance profiles on pipeline runs by @mdekstrand in #897
• Add Torch random_generator option and use in FlexMF by @mdekstrand in #898
• Update user guide to UsesTrainer + provide default finalize implementation by @mdekstrand in #899
• Improvements to stochastic tests by @mdekstrand in #900

Full Changelog: v2025.3.2...v2025.4.0

2025.3 Bugfix

This has a few small bugfixes, along with some experimental feature updates, for the 2025.3 series.

What's Changed

• Fix Jupyter progress bar rate limit by @mdekstrand in #876
• Simplify and refactor component tests by @mdekstrand in #879
• Update conda build + increase flaky retries by @mdekstrand in #882
• Update Dataset and ItemList repr functions by @mdekstrand in #877
• Fall back to normal model when Dynamo compilation fails by @mdekstrand in #883
• Exclude missing values from sparse matrix attribute representations by @mdekstrand in #884
• FAIR reranker: minor fixes and refinement by @samiravaez in #885
• Fix exponential embedding sizes and tuning settings by @mdekstrand in #886
• Add reranking behavior metrics: rbo and lip by @sushobhan2024 in #856

Full Changelog: v2025.3.1...v2025.3.2

Corrected 2025 Second Update

Corrected version of 2025.3.0 to fix publishing and versioning errors.