Rule-Based Expert Systems

Rule-Based Expert Systems

An expert system is one designed to model the behavior of an expert in some field, such as medicine or geology.

Rule-based expert systems are designed to be able to use the same rules that the expert would use to draw conclusions from a set of facts that are presented to the system.

The People Involved in an Expert System

The design, development, and use of expert systems involves a number of people.

The end-user of the system is the person who has the need for the system.

In the case of a medical diagnosis system, this may be a doctor, or it may be an individual who has a complaint that they wish to diagnose.

The knowledge engineer is the person who designs the rules for the system, based on either observing the expert at work or by asking the expert questions about how he or she works.

The domain expert is very important to the design of an expert system. In the case of a medical diagnosis system, the expert needs to be able to explain to the knowledge engineer how he or she goes about diagnosing illnesses.