expert system

program which simulates the thought process of an expert in a certain field (using algorithms of artificial intelligence)

An expert system, also known as a knowledge based system, is a computer program that contains some of the subject-specific knowledge, and contains the knowledge and analytical skills of one or more human experts. This class of program was first developed by researchers in artificial intelligence during the 1960s and 1970s and applied commercially throughout the 1980s.
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A computer system that facilitates solving problems in a given field or application by drawing inference from a knowledge base developed from human expertise. Note 1: The term "expert system " is sometimes used synonymously with "knowledge-based system," although it is usually taken to emphasize expert knowledge. Note 2: Some expert systems are able to improve their knowledge base and develop new inference rules based on their experience with previous problems.

<artificial intelligence> A computer program that contains a knowledge base and a set of algorithms or rules that infer new facts from knowledge and from incoming data.
An expert system is an artificial intelligence application that uses a knowledge base of human expertise to aid in solving problems. The degree of problem solving is based on the quality of the data and rules obtained from the human expert. Expert systems are designed to perform at a human expert level. In practice, they will perform both well below and well above that of an individual expert.
The expert system derives its answers by running the knowledge base through an inference engine, a software program that interacts with the user and processes the results from the rules and data in the knowledge base.
Expert systems are used in applications such as medical diagnosis, equipment repair, investment analysis, financial, estate and insurance planning, route scheduling for delivery vehicles, contract bidding, counseling for self-service customers, production control and training.
[Difference from "knowledge-based system"?]
(1996-05-29)

software used to interpret massive amounts of data and pinpoint findings that require immediate decision-making action.