Differences in judged relevance of Educational Resources Information Center (ERIC) abstracts identified by two different information systems were investigated. A national semi-private educational service agency which utilizes mechanical searching of the research literature was one information system, while the other was a regional,…

Describes an experiment in automatic categorization, which is based on the vector model, widely used in information retrieval. Shows how the construction of the class patterns was carried out. Discusses the evaluation measures adopted and results obtained in the automatic categorization of a collection of documents in Spanish. Describes the manual…

A selective dissemination of information service based on computer scanning of Nuclear Science Abstracts tapes has operated at the Atomic Energy Research Establishment, Harwell, England since October, 1968. The performance of the mechanized SDI service has been compared with that of the pre-existing current awareness service which is based on…

Presents an interaction model and an experimental method for information retrieval. This automated method helps identify which user and system variables are relevant, which are independent of other variables, and which ranges of the variables are most important. Results show that relevance feedback consistently improves retrieval performance. (AEF)

The compatibility property of documentation system is defined by the capacity of the system to posit relationships of equivalence. This state is reached when cataloging references are properly structured and when a program allows searching the same data in the system. (15 references) (Author/MM)

The mathematical model proposed describes a computerized bibliographic information system which includes a method--document learning--of improving the set of index terms assigned to a document representative. Inputs to the information system (index terms and query), relevance feedback, and assumptions concerning the model are discussed.…

The Clinical Documentation Section of Schering Corporation's Medical Information Center has developed an automated document storage and retrieval system capable of generating indexes to all documents in the system, summaries, and reports for management by computer. (MF)

Three specific contributions to the field of information retrieval are presented. The first two describe the establishment of an adaptive, interactive man-machine dialogue that produces a form of unsolicited librarian-like assistance for the user in his selection of index terms to characterize an indexing function. The data set upon which the…

The Project Grant Information System (PGIS) is a computerized information indexing and retrieval system which supports the U.S. Office of Education. Its purpose is to provide OE officials with up-to-date information about the Office's discretionary grant programs and projects. The purpose of the Taxonomy is to provide: (1) those individuals who…

Virtual scatter storage schemes are well suited dictionaries, having both rapid lookup and economy of storage. (MF)

Examines early and current approaches to automatic thesaurus construction and describes an approach to automatic generation of global thesauri based on the term discrimination value model and on an appropriate clustering algorithm. Preliminary results of implementation of the method are reported. (46 references) (Author/MES)

As the fourteenth report in a series describing research in automatic information storage and retrieval, this document covers work carried out on the SMART project for approximately one year (summer 1967 to summer 1968). The document is divided into four main parts: (1) SMART systems design, (2) analysis and search experiments, (3) user feedback…