Weka 3.4.15 (book), 3.6.1 (stable) and 3.7.0 (development)

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

• 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 bugfixes, it is recommended to upgrade to the new versions.

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

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