Article | REF: H3740 V2

Knowledge-based systems

Authors: Jean-Paul HATON, Marie-Christine HATON

Publication date: May 10, 2012, Review date: March 1, 2023

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1. Knowledge

1.1 General

The design of knowledge-based systems, and in particular expert systems, is a major field in artificial intelligence (AI). Such systems are designed to approximate the performance of human experts in limited domains, by exploiting a body of knowledge acquired mainly from these experts. Most often, they are decision-support aids. First appearing around 1975, they have had a definite impact on AI, as well as a sometimes exaggerated media impact. The term expert system has been replaced by the more general concept of knowledge-based system (KBS), which can be found in a variety of fields.

This concept is based on a separation between the knowledge required to solve a problem and the reasoning mechanisms that exploit...

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