weka.classifiers
Interfaces 
ActiveFeatureAcquirer
ActiveLearner
IterativeClassifier
SemiSupClassifier
SoftClassifier
Sourcable
UpdateableClassifier
Classes 
BVDecompose
CheckClassifier
Classifier
CostMatrix
DistributionClassifier
EnsembleClassifier
EnsembleEvaluation
Evaluation
RegressionBVDecompose