Original author(s)Microsoft Research
.NET Foundation
Initial release2008; 16 years ago (2008)
Stable release
v0.4.2301.0301[1] / January 3, 2023; 17 months ago (2023-01-03)
Written inC#
Operating systemMicrosoft Windows, macOS, Linux
Platform.NET Framework, .NET, Mono
TypeMachine learning software library
LicenseMIT License

Infer.NET is a free and open source .NET software library for machine learning.[2] It supports running Bayesian inference in graphical models and can also be used for probabilistic programming.[3]


Infer.NET follows a model-based approach and is used to solve different kinds of machine learning problems including standard problems like classification, recommendation or clustering, customized solutions and domain-specific problems. The framework is used in various different domains such as bioinformatics, epidemiology, computer vision, and information retrieval.[4][5]

Development of the framework was started by a team at Microsoft’s research centre in Cambridge, UK in 2004. It was first released for academic use in 2008 and later open sourced in 2018.[5] In 2013, Microsoft was awarded the USPTO’s Patents for Humanity Award in Information Technology category for Infer.NET and the work in advanced machine learning techniques.[6][7]

Infer.NET is used internally at Microsoft as the machine learning engine in some of their products such as Office, Azure, and Xbox.[8]

The source code is licensed under MIT License and available on GitHub.[9] It is also available as NuGet package.[10]

See also


  1. ^ "dotnet/infer". GitHub. 3 January 2023.
  2. ^ "Microsoft's popular machine learning framework Infer.NET goes open source". 8 October 2018.
  3. ^ Millman, Rene (8 October 2018). "Microsoft makes Infer.NET machine learning framework open-source". Internet of Business.
  4. ^ Bandyopadhyay, Avimanyu (13 October 2018). "Microsoft Open Sources Infer.NET AI Framework [For Humanity]".
  5. ^ a b Speed, Richard. "Microsoft open-sources Infer.NET AI code just in time for the weekend".
  6. ^ "2013 Award Recipients".
  7. ^ "Microsoft Wins "Patents for Humanity" Award For Infer.NET From USPTO". 12 April 2013.
  8. ^ Krill, Paul (October 9, 2018). "Microsoft open-sources Infer.Net model-based machine learning". InfoWorld.
  9. ^ "dotnet/infer". November 3, 2020 – via GitHub.
  10. ^ "Infer.Net 2.4.0".

Further reading