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Posts by LensKit RecSys Toolkit

2026 Releases 2026 builds on the foundation of 2025 to improve the ergonomics of data access, querying, and metrics, and clean up some APIs that seemed good at the time, while making it even easier to use LensKi...

Pleased to announce the first 2026 release of LensKit — the same ideas as 2025, with some training and metric interface cleanups, and improved defaults. Most of your 2025 code will work unchanged. Bug reports, questions, PRs, etc. welcome! lenskit.org/stable/relea...

13 hours ago 0 1 0 0
LensKit for Python This paper describes the design goals, use cases, and capabilities of LKPY, contextualized in a reflection on the successes and failures of the original LensKit for Java software.

You can find the CIKM paper here: md.ekstrandom.net/pubs/lkpy

It's always appreciated if you send @md.ekstrandom.net an e-mail with your paper too, that way he doesn't miss it!

8 months ago 0 0 0 0
LensKit — Research

Spent some time today updating the list of #RecSys research using LensKit, and we're now at 105 known research products using LensKit for Python! lenskit.org/research/

As a friendly reminder, if you use LensKit in your research, please cite the CIKM'20 paper to help track usage.

8 months ago 0 1 1 0
Migrating from LensKit 0.x LensKit 2025.1 brings the largest changes to LensKit’s APIs and operation since moving to Python. These changes are a result of years of experience using and teaching the current Python APIs, talki...

The next LensKit release will be the biggest since the switch to Python, a fundamental paradigm shift to support better flexibility, easy correctness, and self-documentation. Still working on code, testing, and docs, but a preview: lkpy.lenskit.org/en/latest/gu...

1 year ago 1 0 0 0

Hello, world!

1 year ago 4 0 0 1