WASHINGTON (AFP) - John McCarthy, a pioneer of artificial intelligence, has died at the age of 84, the Stanford School of Engineering announced. McCarthy, who died on Sunday, was a professor emeritus in the Department of Computer Science at the Palo Alto, California-based university, where he taught for nearly four decades. McCarthy is credited with coining the term artificial intelligence, or AI, in a 1955 research proposal he submitted with several other scientists while at Dartmouth College. The research proposal called for a study into how to make machines use language, form abstractions and concepts, solve kinds of problems now reserved for humans, and improve themselves.