Knowledge base

It includes knowledge of systems in the form of logic or facts; rule of bases and rule thumbs determines the connection among different solutions and stored data. These rule bases can be utilized to help the concerned personnel in enhancing their decision making and problem solving capability. These rule logics or bases are established by experts upon the basis of their knowledge and experience.

A working memory supplies the information or knowledge for the inference engine to process.

                                                             Figure: Core Components of Expert Systems