why do we need a classification system? why would we need single class classification why use single class classification why is single class classification necessary why use single class classification why is binary class classification used in mls why is the single class classification used why is single class classification used? why do we need single class classification in machine learning why is class classification useful when to use single class classification and when to use binary class classification? why are we needed for classification why is single class classification necessary why use single class classification what is a single class classification? why do we need single class classification why are classifications useful why do we need single class classification? why do we need single class classification why is classification needed