Article Expertext: Intelligent hypertext

Abstract Intelligent tutoring media can take advantage of hypertext systems and expert systems. Hypertext is text plus an abstraction of the text. In reasoning with this abstraction, a hypertext system manifests expertise. This intelligent hypertext is called expertext. When the abstraction of the text is a semantic network, spreading activation and inheritance methods may help people appreciate the structure of the hypertext. When predicates and implications are included in the abstraction, logical deductions can be performed. Queries can be logically answered and then a sequence of relevant text blocks can be provided as an explanation of the answer. Distributed expertext systems use knowledge bases about the domain of the text and about the users. Distributed expertext systems have been developed which guide people in searching for information and in creating information.