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MBML Book Sample Code

Supporting code for the Model-Based Machine Learning book.

This project contains the sample code and test data for the freely-available book on model-based machine learning at The book introduces readers to how to build machine learning models for real-world problems. Each chapter tackles a different problem by defining a statistical model and demonstrating how to apply it to actual data. This repository contains the source code for these models together with the sample data - so that readers can run it on their own, re-create the results from the book and experiment with modifying the code.

Models here are created and applied using the Infer.NET framework. When targeting .NET Framework/Windows code produces visualizations using Glo.


Structure of Repository

  • The Visual Studio solution Samples.sln in the root of the repository contains a project with models for every chapter of the book and a few projects with the shared code and/or unit tests from the folders described below. Code layout in projects corresponding to the book chapters is similar and expanded only once.

  • src/

    • 1. A Murder Mystery - code by Thomas Diethe and Dmitry Kats/
    • 2. Assessing People's Skills - code by Thomas Diethe and Dmitry Kats/
      • Data - input data in ObjML format
      • DataObjects - .NET types to hold the input data
      • Experiment - types that facilitate experimentation: types for metrics, results, and, possibly, other experiment-related data structures; a type that represents a single experiment and exposes a method to run it, type(s) that store multiple experiments together for comparison, etc.
      • Models - .NET types for Infer.NET models. Have methods to construct a model and to run inference on it.
      • Views - additional Glo views needed for specific chapter. Not included in compilation when targeting .Net Core.
      • Contents.cs - static type that has constants for the name of the chapter and all the sections within the chapter
      • Program.cs
    • 3. Meeting Your Match - code by Thomas Diethe and Alexander Novikov
      • This chapter and the remaining chapters have similar layout to chapter 2.
    • 4. Uncluttering Your Inbox - code by Thomas Diethe and Dmitry Kats
    • 5. Making Recommendations - code by Yordan Zaykov and Alexander Novikov
    • 6. Understanding Asthma - code by John Guiver and Dmitry Kats
    • 7. Harnessing the Crowd - code by John Guiver and Dmitry Kats
    • MBMLCommon/ - a number of utility classes shared by different projects including
      • Outputter.cs - class that encapsulates outputting objects, so that the code for chapters can output results in a platform-agnostic way. Also exposes methods for saving outputs to .objml files.
    • MBMLViews - additional Glo views shared among the chapters.
  • test/ - projects with unit tests

Building Sample Code

Please, refer to our building guide.


We welcome contributions! Please review our contribution guide.


MBML Book Sample Code is licensed under the MIT license.

.NET Foundation

MBML Book Sample Code is a .NET Foundation project. It relies on Infer.NET framework.

There are many .NET related projects on GitHub.

  • .NET home repo - links to 100s of .NET projects, from Microsoft and the community.