extend the LibSVM class to access underlying model
add adaboost classifier
add bagging classifier
data handling with sampling
complete data handling with sampling
add print description method
enable standford core nlp lemmatizer
add document key word finder
update print message
code refactoring
add key word based classifier -Adeesha ayya's approach
add print message
add key word filtering mechanism for test data loading process
code refactoring
code refactoring
add test methods
Merge remote-tracking branch 'origin/master'