Classification: According to the first edition of the EU-U.S. terminology and taxonomy for artificial intelligence, the term “Classification” means:
A classification system is a set of “boxes” into which things are sorted. Classifications are consistent, have unique classificatory principles, and are mutually exclusive. In AI design, when the output is one of a finite set of values (such as sunny, cloudy, or rainy), the learning problem is called classification, and is called Boolean or binary classification if there are only two values.