Core Weka

• EM and SimpleKMeans now allow for parallel processing on multi cpu/core machines
• CSVLoader re-written to be more memory efficient and support incremental loading
• Error plots for classifiers can optionally have point sizes set proportional to the prediction margin
• Pluggable evaluation metrics for classifiers/regressors
• Weighted resampling using the Walker's alias method
• FlowByExpression - KnowledgeFlow component to split incoming instances (or instance stream) according to the evaluation of a logical expression
• ReplaceMissingWithUserConstant filter
• PartitionMembership filter - adds partition membership attributes as computed by a classifier that implements PartitionGenerator
• Stream throughput metrics in the KnowledgeFlow when running incrementally
• TextSaver KnowledgeFlow component
• Search facility in the KnowledgeFlow design palette
• Keyboard shortcuts in the KnowledgeFlow for toolbar buttons
• Offline mode for the packge manager
• Improved out of memory detection and new low memory detection for GUIs

In Packages

• New isolationForest package - isolation forests for outlier detection
• New multilayerPerceptrons package
• New extraTrees package
• Performance improvements for optics_dbScan
• New lazyAssociativeClassifier package contributed by Gessé Dafé
• New EvolutionarySearch package contributed by Sebastian Luna Valero