MACHINE LEARNING

Detailed explanation-1: -In 1974, in response to the criticism from James Lighthill and ongoing pressure from congress, the U.S. and British Governments stopped funding undirected research into artificial intelligence, and the difficult years that followed would later be known as an “AI winter".

Detailed explanation-2: -The AI winter of the 1980s was precipitated by failures of “expert systems, ‘’ systems that were purported to have decision-making capabilities similar to a human expert. These systems were popular in the 1980s, but they proved expensive and unreliable. This led to the belief that AI research had been overhyped.

Detailed explanation-3: -The AI winter was a result of such hype, due to over-inflated promises by developers, unnaturally high expectations from end-users, and extensive promotion in the media.