What is Apache Mahout?

The Apache Mahout™ project's goal is to build an environment for quickly creating scalable performant machine learning applications.

Latest release version 0.12.1 has

Apache Mahout Samsara Environment includes
  • Distributed Algebraic optimizer
  • R-Like DSL Scala API
  • Linear algebra operations
  • Ops are extensions to Scala
  • IScala REPL based interactive shell
  • Integrates with compatible libraries like MLLib
  • Runs on distributed Spark, H2O, and Flink
  • fastutil to speed up sparse matrix and vector computations
Apache Mahout Samsara Algorithms included
  • Stochastic Singular Value Decomposition (ssvd, dssvd)
  • Stochastic Principal Component Analysis (spca, dspca)
  • Distributed Cholesky QR (thinQR)
  • Distributed regularized Alternating Least Squares (dals)
  • Collaborative Filtering: Item and Row Similarity
  • Naive Bayes Classification
  • Distributed and in-core

Apache Mahout software provides three major features:

  • A simple and extensible programming environment and framework for building scalable algorithms
  • A wide variety of premade algorithms for Scala + Apache Spark, H2O, Apache Flink
  • Samsara, a vector math experimentation environment with R-like syntax which works at scale

Read an Overview of programming a Mahout Samsara Application, learn How To Contribute to Mahout, report an issue, bug, or suggestion in our JIRA, see the Samsara bindings for Scala and Spark, and contact us on our mailing lists.

19 May 2016 - "Visualizing Apache Mahout in R via Apache Zeppelin" posted

A tutorial on connecting Mahout, R, Spark, and Zeppelin by Trevor Grant showing how to plot results in Apache Zeppelin.

18 May 2016 - Apache Mahout 0.12.1 released

The Mahout 0.12.1 is a minor release following 0.12.0 that fixes issues in the newly added Flink backend and supports Flink 1.0.3.

11 Apr 2016 - Apache Mahout 0.12.0 released

The Mahout 0.12.0 release marks a major milestone for the “Samsara” environment’s goal of providing an engine neutral math platform by now supporting Flink. While still experimental, the mahout Flink bindings now offer all of the R-Like semantics for linear algebra operations, matrix decompositions, and algorithms of the “Samsara” platform for execution on a Flink back-end.

12 Mar 2016 - Apache Mahout 0.11.2 released

Apache Mahout introduces a new math environment called Samsara, for its theme of universal renewal. It reflects a fundamental rethinking of how scalable machine learning algorithms are built and customized. Mahout-Samsara is here to help people create their own math while providing some off-the-shelf algorithm implementations. At its core are general linear algebra and statistical operations along with the data structures to support them. You can use is as a library or customize it in Scala with Mahout-specific extensions that look something like R. Mahout-Samsara comes with an interactive shell that runs distributed operations on an Apache Spark cluster. This make prototyping or task submission much easier and allows users to customize algorithms with a whole new degree of freedom.

Mahout Algorithms include many new implementations built for speed on Mahout-Samsara. They run on Spark 1.3+, Flink 1.0.1, and some on H2O, which means as much as a 10x speed increase. You’ll find robust matrix decomposition algorithms as well as a Naive Bayes classifier and collaborative filtering. The new spark-itemsimilarity enables the next generation of cooccurrence recommenders that can use entire user click streams and context in making recommendations.

Our release notes have details. Interested in helping? Join the Mailing lists.

Mahout News

11 April 2016 - Apache Mahout 0.12.0 released

12 March 2016 - Apache Mahout 0.11.2 released

23 February 2016 - New Apache Mahout Book - "Apache Mahout: Beyond MapReduce" by D.Lyubimov and A.Palumbo released. See Mahout "Samsara" Book Is Out

6 November 2015 - Apache Mahout 0.11.1 released

7 August 2015 - Apache Mahout 0.11.0 released

6 August 2015 - Apache Mahout 0.10.2 released

31 May 2015 - Apache Mahout 0.10.1 released

11 April 2015 - Apache Mahout 0.10.0 released

1 February 2014 - Apache Mahout 0.9 released

Visit our release notes page for details.

25 July 2013 - Apache Mahout 0.8 released

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16 June 2012 - Apache Mahout 0.7 released

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6 Feb 2012 - Apache Mahout 0.6 released

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9 Oct 2011 - Mahout in Action released

The book Mahout in Action is available in print. Sean Owen, Robin Anil, Ted Dunning and Ellen Friedman thank the community (especially those who were reviewers) for input during the process and hope it is enjoyable.

Find Mahout in Action at your favorite bookstore, or order print and eBook copies from Manning -- use discount code "mahout37" for 37% off.