Expert systems

Expert systems

1. What is an expert system

   • An ICT system that uses articficial intelligence
   • The system responds in a way that a humand would
   • Matches the performance of a human

2. The three components of an expert system

   • Knowledge based
   • Inference engine
   • A user interface

3. How expert systems work

   • Use a problem solving model that organises and controls the steps that need to be taken to solve the problem
   • The knowledge base is all the information an expert uses when arriving at a decision or diagniosis
   • A user is asked a series of questions which may include the results of a test

4. Medical use of expert stsems

   • Much of medicine is based around the making ofdecisions based around certain facts so expert systems find many uses in this field

5. Advantages of expert systems

   • Consistency
   • Cheaper
   • Expert system can conatin a much larger pool of knowledge
   • The expert syetem is available 24/7
   • Computer uses all the information is has, unlike a human who may forget

6. Disadvantages

   • No common sense
   • Can make absurd errors
   • Not able to provide a creative response
   • Not being able to relise when no answer is available
   • Relise n rukles and knowledge being correct