April 2016
Intermediate to advanced
451 pages
13h 37m
English
Content preview from Intelligent Systems for Engineers and Scientists, 3rd Edition
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2
Rule-Based Systems
2.1 Rules and Facts
A rule-based system is a knowledge-based system (KBS) where the knowledge base is represented in the form of a set, or sets, of rules. Rules are an elegant, expressive, straightforward, and flexible means of expressing knowledge. The simplest type of rule is called a production rule and takes the form
if <condition> then <conclusion>.
An example of a production rule might be
if the tap is open then water flows.
Part of the attraction of using production rules is that they can often be written in a form that closely resembles natural language, as opposed to a computer language. A simple rule like the foregoing one is intelligible to anyone who understands English. Although rules can be considerably more ...
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