Discussion of information retrieval and the derivation of new knowledge from bibliographic databases focuses on medical journal literature. Topics discussed include the incomplete coverage of medical literature on databases; searching by free text or title words versus searching by assigned subject headings; and the implications of these factors…

Describes a project that was designed to test the relative efficacy of index terms and full-text for the retrieval of documents in MEDLINE journals. Precision and relevance of citations retrieved from full-text databases versus bibliographic databases is discussed, and the addition of MEDLINE indexing to enhance full-text medical journals is…

Designed for use in the reading room of the ERIC Clearinghouse on Information Resources, this set of three self-instructional guides provides step-by-step instructions for locating information in the ERIC system. The first instruction sheet explains how to use the Thesaurus of ERIC Descriptors to identify appropriate subject headings, or…

This brief review of the Educational Resources Information Center (ERIC) system is intended to make users more aware of (1) the system as a whole, (2) the process of indexing educational literature for the database, and (3) the role of the Thesaurus of ERIC Descriptors in the overall information dissemination process. An overview of the ERIC…

Investigated the relative merits of searching on titles, subject headings, abstracts, free-language terms, and combinations of these elements. The combination of titles and abstracts came the closest to 100 percent retrieval. (Author/PF)

Explains the codes used in the Congressional Information Service's (CIS) database, presents entry formats for proposed legislation, and provides tips for searching dates and bill numbers. Included are a committee code master list, document type codes, legislative calendar codes (1970-80), and a list of contents-characteristics terms. (JD)

Explains seven types of subject descriptions commonly used in databases--hierarchical classification, category codes, subject headings, descriptors, faceted classification, post-controlled vocabulary, and natural language--and describes specific search techniques for taking advantage of the strengths of particular types of vocabularies. An overall…

Focuses on several databases currently available on Bibliographic Retrieval Services (BRS) for searching international business and management research online--ABI/INFORM, MANAGEMENT CONTENTS, PREDICASTS (bibliographical and statistical)--noting scope and coverage, thesaurus and descriptors, and search strategies. Predicasts file structure and…

Concentrates on describing and illustrating by example the unique BRS features of the online Social Sciences Citation Index. Appendices provide a key to the BRS/SSCI citation elements, BRS standardized language codes, publication type codes, author's classification of BRS/SSCI subject category codes, search examples, and database specifications.…

Introduces the reader to the Oceanic Abstracts database, its scope, subject areas, related databases, users, search strategies, and workshops. Included are a complete listing of its subject headings; its abbreviations/prefixes/symbols; its specifications; and a tabulated searchguide for 1964 to the present. (JD)

In order to permit systematic searching of multiple data bases to satisfy requests in interdisciplinary areas, a mapping of a portion of "Medical Subject Headings" to three other controlled vocabularies has been constructed. (Author)

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…

Describes basic strategy for cocitation searching, i.e., searching for any document citing at least two other specified documents, usually on same topic. Search terms, using combinations for retrieving cocited papers, boundary spanning, retrieving review articles, adding new cited sources to modify strategy, and cited sources/free-text terms are…

This paper discusses examples of searching vocabularies, i.e., lists of terms which have been prepared with the online searcher, rather than the indexer, in mind. These lists are categorized as: enhanced thesauri or subject heading lists, synonym listings, index term listings, and merged vocabularies. Eight references are provided. (EJS)

Estimates of frequency of spelling errors are made based on a sample of 3,600 index terms drawn from 11 bibliographic data bases. The impact of these errors is discussed by tape supplier, tape user, and end user; with some suggestions for search strategies.