The author discusses information retrieval systems with particular emphasis on the assignment of descriptor terms. She first explains the method of determining terms by deriving key words from a title or abstract, a procedure that can often be carried out by a computer. After discussing the problems of derived indexing, the author explains the…

An experiment was conducted to design a corporate author index to a large bibliographic file. The nature of corporate entries necessitates a different search key construction from that of personal names or titles. Derivation of a search key to select distinct corporate entry records is discussed. (7 references) (Author)

In 1965 the Syracuse University School of Library Science held a symposium to explore the nature of the relationship between the structure and transmission of knowledge, on the one hand, and the array of bibliographic devices which have been developed to facilitate access to that knowledge, on the other. Papers presented discussed the need for a…

The Uniterm system of coordinate indexing, developed by the Armed Services Technical Information Agency, provides a method for the organization, storage, and retrieval of information. The contents of reports are analyzed, and terms are assigned to the documents. For each term there is a card upon which the accession number of documents assigned…

This handbook examines sources of information useful to educators and educational consultants who wish to learn about innovative practices and/or solutions to educational problems in other schools. A discussion of information storage describes the access to information in reports, periodicals, unpublished reports, and other materials through such…

Presents uniform and efficient approach for processing all truncated query terms in information retrieval which requires one disk access to obtain from the permuted dictionary all strings represented by truncated term. The problem of the overhead storage required to implement the permuted dictionary is discussed. Fifteen references are provided.…

TRIAL is an information processing system that will perform editing, indexing, and retrieval of textual and certain types of numeric information. The system allows for: (1) the creation and maintenance of a master file, (2) indexing on words designated as 'key' words or, alternatively, on every word in the text, excluding those common terms that…

Reviews the special requirements of a bibliographic database, and shows how they are met in the DOBIS-LIBIS (Dortmund Library System-Leuven Library System) system. Full authority file control over the indexes to the database is discussed, and the DOBIS-LIBIS system is described in detail. References are included. (Author/BK)

Discusses indexes for text databases and presents an efficient implementation of an index for text searching called PAT array, or suffix array, where the database is stored on secondary storage devices such as magnetic or optical disks. Additional hierarchical index structures and searching algorithms are proposed that improve searching time, and…

The indexing and online searching of data bases have both conflicting and complementary structures, determined in part by the choice of indexing language. In the planning of a machine readable system, the Foundation Center, administrator of two data bases, initially chose a natural language for the lower cost, more rapid implementation, and…

SEARCH STRATEGIES WHICH CAN BE CONTINUOUSLY MODIFIED WERE DEVELOPED FOR COORDINATE SEARCHING SYSTEMS. USING THE FILES OF THE NASA TECHNOLOGY UTILIZATION PROGRAM AT THE KNOWLEDGE AVAILABILITY SYSTEMS CENTER, UNIVERSITY OF PITTSBURGH, A STUDY WAS CONDUCTED OF THE RETRIEVAL OF RELEVANT DOCUMENTS BY BOTH MANUAL AND MACHINE METHODS FOR FIVE QUESTIONS…

Rules and guidelines are provided for subject indexing in the ERIC system. The principle of "subject access" is discussed with particular reference to "coordinate indexing," which involves designating subject content by unit terms (or tags) that may be put together or "coordinated" for subsequent retrieval. The nature…

Rules and guidelines are provided for subject indexing in the ERIC system. The principle of "subject access" is discussed with particular reference to "coordinate indexing," which involves designating subject content by unit terms (or tags) that may be put together or "coordinated" for subsequent retrieval. The nature…

Examines through a series of mathematical models (theorems, descriptions, and examples), properties and operations on inverted files, which are used in an information retrieval system based on thesaurus with weighted descriptors. (CWM)

Designed to be a foundation work, this book about information storage and retrieval includes discussions of theory as well as descriptions of practice. It is intended for: (1) students at both the graduate and non-graduate level who are beginning formal studies of librarianship/information science; (2) staff of library/information units who have…