Discussion of document ranking methods to calculate the conceptual distance between a Boolean query and a document focuses on the Knowledge-Based Extension Boolean Model which evaluates weighted queries and documents effectively and avoids problems of previous methods. Semantic networks are discussed, and is-a hierarchies are explained. (21…

Presents an outline of models of information seeking and other aspects of information behavior, showing the relationship between communication and information behavior in general with information seeking and information searching in information-retrieval systems. Also presents an alternative, problem-solving model which provides a basis for…

Presents Checkland's soft systems methodology, discusses it in terms of the systems approach, and illustrates how it was used to relate evidence of user survey to practical problems of library management. Difficulties in using methodology are described and implications for library management and information science research are presented. (8…