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Another new package for 3.7.2 that adds a 3D visualization of association rules to Associations panel of the Explorer. Requires Java 3D to be installed.

gridSearch

GridSearch (now in a package called "gridSearch") is now multi-threaded to take advantange of multi-core machines.

Classifiers

SGD

SGD is a simplified stochastic gradient descent algorithm for fast learning of linear support vector machines (binary class), logistic regression (binary class) and linear regression. Can be trained incrementally, making it suitable for processing large data sets.

PMML

Import of PMML support vector machines models is now supported. See the PMML support in Weka page for more info on PMML support.

Filters

Denormalize is a filter for flattening transactional data, making it suitable for processing by Weka's association rule learners. MathExpression can now reference values other than that of the attribute being processed.

Association rule learning

FPGrowth now has a special command-line only option that enables the two passes over the data required by the algorithm to be done incrementally by reading one instance at a time off of the disk.

Explorer/Knowledge Flow

The scatter plot matrix visualization now has a "fast scroll" feature that allows good scrolling performance when many data points are being visualized (consumes more memory than regular scrolling).