An expert system is a computer system that emulates the decision-making ability of a human expert. Expert systems are designed to solve complex problems by reasoning about knowledge, represented mainly as if-then rules rather than through conventional procedural code.
The big advantage of Berkeley Publisher is to empower domain experts translating their knowledge into an expert system without the help of a programmer.
Ease of maintenance is another major advantage. By removing the need to write conventional code, many of the normal problems that can be caused by even small changes to a system could be avoided with expert systems. Essentially, the logical flow of the program (at least at the highest level) is a given for the system. Rapid prototyping is another beneficial part of using the Publisher in developing an expert system. With an expert system, it is possible to enter a few rules and have a prototype developed in hours or days rather than the months or years typically associated with complex IT projects.
Expert systems are widely used in legal industry, governmental organizations, and healthcare.