What is Machine Learning? In simple terms, machine learning is a branch of the larger discipline of Artificial Intelligence, which involves the design and construction of computer applications or systems that are able to learn based on their data inputs and/or outputs. Basically, a machine learning system learns by experience; that is, based on specific training, the system will be able to make generalizations based on its exposition to a number of cases and then be able to perform actions after new or unforeseen events.