Discusses ranking techniques for document retrieval and proposes an evaluation, or filtering, technique that reduces costs and memory usage by early recognition of which documents are likely to be highly ranked. Highlights include index design, ranked query evaluation, reducing the number of accumulators, inverted file structures, and experimental…

Describes the advantages of videodisc technology for storing vast amounts of information and discusses two applications--manual and catalog storage by the manufacturing industry and quick information access by medical and legal professionals. Future videodisc projects and a cost/performance comparison of videodiscs and other information storage…

Reports on the state of currently available digital storage and retrieval systems and describes in detail one-sided optical videodisc LaserData and the Mnemos system, which stores graphic images on microfiche discs. Video Patsearch, Matrox, Philips Megadoc, DEMAND, and Digital Recording Corporation's optical digital records and future videodisc…

This report presents the results of the initial phase of the File Organization Project, a study which focuses upon the on-line maintenance and search of the library's catalog holdings record. The focus of the project is to develop a facility for research and experimentation with the many issues of on-line file organizations and search. The first…

A project constructed a Computer-based Test Development Center (COMBAT). It involved the development of instructional objectives and test items and their storage in a computer system from which they could be available to teachers. Project record data, questionnaires, and interviews were used to determine if the objectives were achieved, what the…