Machine learning
Machine learning is a subfield of artificial intelligence, which is broadly defined as the capability of a machine to imitate intelligent human behavior. Artificial intelligence systems are used to perform complex tasks in a way that is similar to how humans solve problems.
Functions of a Machine Learning System

Descriptive
the system uses the data to explain what happened.

Predictive
the system uses the data to predict what will happen.

Prescriptive
the system uses the data to make suggestions about what action to take.