Apache Mahout 0.6 veröffentlicht

Heute hat die Apache Software Foundation (ASF) das Machine-Learning-Framework Mahout in Version 0.6 veröffentlicht. Es gab viele Fehlerbehebungen und Verbesserungen. Insgesamt wurde 182 JIRAs geschlossen. Dazu zählen unter anderem die Fehlerreports [MAHOUT-807] - Wrong prefixes in PrefixAdditionFilter und [MAHOUT-809] - Bad bug in ChunkedWriter von Florian Bausch.

Interessant sind aber auch die Reports [MAHOUT-890] - Performance issue in FPGrowth und [MAHOUT-921] - FPG uses a lot of boxed primitives - this patch eliminates a bunch of List<Integer>, die einige, teils gravierende, Probleme im implementierten FP-Growth Algorithmus beheben.

Hier noch die Mail von der Mailing Liste:

Apache Mahout has reached version 0.6. All developers are encouraged to begin using version 0.6, as much has changed and will continue to do so as we march inexorably toward a 1.0 release. Highlights of 0.6 include:

  • Improved Decision Tree performance and added support for regression problems
  • New LDA implementation using Collapsed Variational Bayes 0th Derivative Approximation
  • Reduced runtime of LanczosSolver tests
  • K-Trusses, Top-Down and Bottom-Up clustering, Random Walk with Restarts implementation
  • Reduced runtime of dot product between vectors
  • Added MongoDB and Cassandra DataModel support
  • Increased efficiency of parallel ALS matrix factorization
  • SSVD enhancements
  • Performance improvements in RowSimilarityJob, TransposeJob
  • Added numerous clustering display examples
  • Many bug fixes, refactorings, and other small improvements

Changes in 0.6 are detailed in the release notes (https://issues.apache.org/jira/secure/ReleaseNote.jspa?projectId=12310751&version=12316364).

Downloads of all releases available from Apache mirrors. (http://www.apache.org/dyn/closer.cgi/mahout/)

Enjoy!

Regards, Shannon

Links:

This article was published on 02/06/2012 11:05 p.m. and is stored in the category Development. It is tagged with Apache, Artificial Intelligence, Cluster, Hadoop, Java, Linux, Mahout
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