Artificial intelligence: getting ML classification models right

"Classification: method of structuring a defined type of item (objects or documents) into classes and subclasses in accordance with their characteristics." Classification is about categorizing data sets into classes. A simple example is an email spam filter, which classifies incoming messages as spam and not spam. The classifier needs examples of'spam' and'not spam' emails to learn how to perform the task by recognizing patterns. The spam filter will almost certainly make mistakes, which can only be ironed out by regularly evaluating its performance.