system is one designed to model the behavior of an expert in some field, such
as medicine or geology.
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
The People Involved in an Expert System
The design, development, and use of expert systems
involves a number of people.
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
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.
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.