Expert Systems

Abstract Expert systems have emerged around mid‐1970s under the umbrella of Artificial Intelligence and as soon as convincing success was attained, the field was transformed into an established branch of computer science. The potential of expert systems that emulate human knowledge and skill has also encouraged the development of many applications in various areas.Expert systems contain specialized knowledge elicited from a domain expert. Various expert system building tools or shells exist to greatly facilitate and speed up the development of expert systems. Some of the new generation tools also allow an expert system to be delivered over the Internet.This article introduces expert system and knowledge engineering concepts and discusses issues related to expert system design and development in various areas.