The overall research goal of artificial intelligence (AI) is to create technology that allows computers and machines to function in an intelligent manner.  It means making computers behave like humans.  AI research is divided into sub fields that focus on specific problems or on specific approaches or on the use of a particular tool or towards satisfying particular applications.

Best example for AI is google’s google assistant, amazon’s alexa, apple’s siri and Microsoft’s Cortana. All these products are virtual assistant. These are voice recognize applications and it recognize human voice and get the results according to the voice commands.

The central problems (or goals) of AI research include reasoning, knowledge, planning, learning, natural language processing (communication), perception and the ability to move and manipulate objects.  General intelligence is among the field’s long-term goals. Approaches include statistical methods, computational intelligence, and traditional symbolic AI. Many tools are used in AI, including versions of search and mathematical optimization, logic, methods based on probability and economics. The AI field draws upon computer science, mathematics, psychology, linguistics, philosophy, neuroscience and artificial psychology.