Knowledge Based Expert System (KBES)

KBES is a computer-based system which uses and produces knowledge from data, information and knowledge. These systems have the ability to understand the information that is being processed and can take a final decision based on it. This is different from the traditional computer systems that do not have any idea about the data/information which they are processing.
A knowledge based expert system is software or computer based information system which comprises knowledge as data that is processed by computer programs to draw inferences from knowledge base.