Expert Systems

Expert Systems

1. An expert system is computer software that attempts to act like a human expert on a particular subject area.

2. How does it work?

   • 1. A user interface - This is the system that allows a non-expert user to query the expert system and to receive advice. The user-interface is designed to be a simple to use as possible.
     • 2. A Knowledge base - This is a collection of facts and rules. The knowledge base is created from information provided my human experts.
       • 3. A interface engine - This acts rather like a search engine, examining the knowledge base for information that matches the users query.

3. Where are they used?

   • Medical diagnosis, the symptoms of the patient would be used as the query, and the advice would be a diagnose of the patient’s illness.

4. Advantages and Disadvantages

   • Advantages
     • Expert systems do not get tried so can work 24/7.