An expert system shell is an application or set to software tools, that make it easy to construct an expert system. They will usually include some way of encoding knowledge and reasoning about it as well as user interaction and explanation facilities. The system will need to be configured for each new knowledge domain and application needs, but redcues the effor needed to create a functioning {[expert system}}.
Used in Chap. 18: page 277
Also known as expert systems shells