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View Full Version : New Weka releases - 3.4.15 (book), 3.6.1 (stable) and 3.7.0 (development)



Mark
06-04-2009, 11:55 PM
Hi everyone,

New versions of Weka are available for download from the Weka homepage or directly from Sourceforge:

* Weka 3.4.15 - the stable book version available as ZIP, Win32 installer, Win32 installer incl. JRE 1.4.2_13 and
Mac OS X application.

* Weka 3.6.1 - stable GUI version. It is available as ZIP, with Win32 installer, Win32 installer incl. JRE 1.5.0_18 and Mac OS X application.

* Weka 3.7.0 - development version. It is available as ZIP, with Win32 installer, Win32 installer incl. JRE 1.5.0_18 and Mac OS X application.

All versions contain a significant number of bug fixes, it is recommended to upgrade to the new versions.

Weka homepage:
http://www.cs.waikato.ac.nz/~ml/weka/

SourceForge site:
http://sourceforge.net/projects/weka/

Pentaho PDM (Weka) community documentation:
http://wiki.pentaho.com/display/DATAMINING/Pentaho+Data+Mining+Community+Documentation


Note:
It might take a while before Sourceforge.net has propagated all the files to its mirrors.


What's new in 3.7.0?

Some highlights
---------------

* Tabu search method for feature selection
* EM-based imputation of missing values
* Speed improvements for random trees, which in turn lead faster random forests (up to an order of magnitude faster)
* Support for importing PMML decision trees
* Apriori can make use of sparse instances for market basket type data
* Support for using environment variables in the Knowledge Flow
* Support for Groovy scripting
* Improvements to the loading of CSV files
* Enhanced plugin support in the Explorer's Classify panel
* Filter for sorting the labels of nominal attributes
* Information on instance weights displayed in the Preprocess panel of the Explorer
* Wrapper feature selection now supports mae, f-measure, auc, rmse (probabilities), mae (probabilities) as well as the original error rate and rmse
* Converters to read and write Matlab's ASCII file format


As usual, for a complete list of changes refer to the changelogs.

Cheers,
The Weka Team