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VowpalWabbit / vowpal_wabbit

Vowpal Wabbit is a machine learning system which pushes the frontier of machine learning with techniques such as online, hashing, allreduce, reductions, learning2search, active, and interactive learning.

Why this job: works in the areas we cover, but does not say which job it does

What it does

Vowpal Wabbit is a machine learning system which pushes the frontier of machine learning with techniques such as online, hashing, allreduce, reductions, learning2search, active, and interactive learning. There is a specific focus on reinforcement learning with several contextual bandit algorithms implemented and the online nature lending to the problem well. Vowpal Wabbit is a destination for implementing and maturing state of the art algorithms with performance in mind.

Get started

No single install command. Read the steps in the README (opens in new tab)

Maintenance
Active
Last commit 45 days ago
Stars
8,737
+5 this week
Licence
Custom
Read before business use
Downloads for
None listed
No release files
Latest version
9.11.9
Released 46 days ago
Built with
C++
58% of the code

Is it looked after?

Contributors
Not stated
Last 90 days
Issues
100% closed
0 still open
Pull requests
3,137 merged
0 waiting
Releases
38
8 in the last year

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More: languages, topics and project record

Languages

  • C++ 58%
  • C# 15%
  • PLSQL 10%
  • Python 6%

Topics

  • c-plus-plus
  • machine-learning
  • online-learning
  • contextual-bandits
  • reinforcement-learning
  • active-learning
  • learning-to-search
  • cpp

Project record

  • JobOther AI tools
  • StatusListed
  • Commits10,603
  • Forks1,920
  • Watching328
  • Stars in 28 days+13
  • CreatedJul 31, 2009
  • First seen by usNov 7, 2026
  • CheckedNov 8, 2026

Type to search.

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