What is an Expert System?

by Daniel L. Thomas, Univ of Georgia, United States,
Ronald W. McClendon, Univ of Georgia, United States,

Document Type: Proceeding Paper

Part of: Planning Now for Irrigation and Drainage in the 21st Century


Expert systems are probably the predominant area of artificial intelligence (AI) since the technology has a wide degree of application today. Expert systems function primarily on the concept of 'if - then -' rules. For example, if the soil water content for a particular crop is at a critical water level and there is no anticipated rainfall for several days, then irrigate. One of the unique characteristics of expert systems is the ability to arrive at a decision without complete information and then justify the decision. The decision may even have a certainty level associated with it. This paper discusses expert system components including the knowledge base, the inference engine, user interface, and knowledge acuisition, advantages and disadvantages of expert systems.

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