Define expert systems, identify the three components upon which they depend, and explain the purpose of expert systems. Present an example of an expert system and explain how it works. How do expert systems differ from relational databases?
What will be an ideal response?
Expert systems are computer models that attempt to duplicate the decision-making processes used by skilled investigators in the analysis of evidence and in the recognition of patterns that such evidence might represent. They use computers to make inferences based on available information and to draw conclusions or to make recommendations to the system's operators. Expert systems depend on three components: a user interface or terminal; a knowledge base containing information on what is already known in the area of investigation; and a computer program known as an inference engine that compares user input and stored information according to established decision- making rules. Expert systems that may be discussed include NCAVC, HITMAN, and DARPA. Relational databases permit fast and easy sorting of large numbers of records.
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