Classifying non-stationary and imbalanced data streams encompasses two important challenges, namely

concept drift and class imbalance. Concept drift is changes in the underlying function being learnt, and class imbalance is vast difference...

Concept drift(non-stationarity)andclassimbalancearetwoimportantchallengesforsupervised

classifiers. “Concept drift” (or non-stationarity)referstochangesintheunderlyingfunctionbeinglearnt,

and classimbalance ...