This report describes recent efforts to modify, test, and evaluate an experimental online database consisting of 15 vendor-supplied, controlled subject vocabularies or thesauri. The experimental database, called the Vocabulary Switching System (VSS), is designed to enhance search strategies and ultimately retrieval performance for users of online…

This paper reports on an application of parallel models to the area of information retrieval and argues that massively parallel, distributed models of computation, called connectionist, or parallel distributed processing (PDP) models, offer a new approach to the representation and manipulation of knowledge. Although this document focuses on…

Analyzes computerized reference and information services with respect to problems in the areas of (1) communication barriers between the user and the information specialist; (2) local resources development; (3) external resources policy; (4) search strategy development; and (5) artificial intelligence. (24 references) (Author/MES)

Reports results of a survey of online catalog users in an academic library in Saudi Arabia that examined search patterns, levels of satisfaction, and user attitudes toward the online catalog. The special problems encountered when searching in a foreign language are discussed, and systems improvements are suggested. (CLB)

This paper explores the fault-tree analysis approach to isolating failure modes within a system. Fault tree investigates potentially undesirable events and then looks for failures in sequence that would lead to their occurring. Relationships among these events are symbolized by AND or OR logic gates, AND used when single events must coexist to…

Reports on the method and findings of a study which used unobtrusive testing to measure the accuracy and efficiency of search strategies by library personnel when dealing with the technical report literature. A copy of the test questions used in this study is appended. (CLB)