This study investigated critical factors that would constitute reliable performance measures for bibliographic information retrieval systems, and compared the operational effectiveness of the relevance-theoretic and utility-theoretic models. The factors discussed include document and information attributes, judges, and environmental factors. (18…

Discusses the importance of user cordial interfaces to the successful marketing of optical data disk products, and describes features of several online systems. The topics discussed include full text searching, indexed searching, menu driven interfaces, natural language interfaces, computer graphics, and possible future developments. (CLB)

A comparison of the effectiveness of information retrieval based on full-text documents with retrieval based on paragraphs, abstracts, or controlled vocabularies was accomplished using a subset of journal articles with nine search questions. It was found that full-text retrieval achieved significantly higher recall and lower precision than did the…

Describes the downloading capabilities of the WESTMATE version of the WESTLAW retrieval system and compares WESTLAW to LEXIS in terms of downloading functions and costs. The steps involved in WESTLAW access with standard communications software are outlined, and sample screen displays are appended. (CLB)

POPLINE, a cooperatively produced bibliographic retrieval system offered through MEDLARS, is a comprehensive collection of the worldwide literature on population and family planning. A comparison of several medical and social science databases with POPLINE indicates that POPLINE offers the greatest depth and breadth of subject coverage in this…

Examines online and printed equivalents of selected government documents indexes to compare the recall, precision, overlap, and cost effectiveness of online and manual searching. Indexes studied were the Monthly Catalog, CIS (Congressional Information Service) Index, and Government Reports Announcements and Index. (CLB)

Two subject profiles (social welfare direct practice and management) were used to search 13 social science databases in order to examine extent of online coverage of social welfare literature. Journal coverage data for 20 titles were obtained and most recent citations were retrieved to compare currency of indexing (5 references). (EJS)

Assesses the major databases for retrieval of mental health information (PSYCINFO, MEDLINE, NIMH) on the basis of journal coverage, controlled vocabulary, abstracts, and performance in actual searches. Thirteen references, database information (producer, availability/cost, coverage, updates/currency), comparison of journal coverage by selected…

Large, multiyear, state-managed clinical administrative databases provide important tools to inform decision makers about emerging trends in the nation's substance abuse treatment system. Such data can equip decision makers to monitor the responsiveness and efficiency of substance abuse treatment services and identify opportunities for…

A survey of 164 academic and special libraries reveals that accessibility of equivalent databases online has had a relatively small effect thus far on decisions to discontinue subscriptions to printed abstracting and indexing services. Tables display printed form and online databases used by the libraries, and seven references are listed. (RBF)

Explores the evaluation of image and multimedia information-retrieval systems, particularly the effectiveness of several shape measures for content-based retrieval of similar images. Shape feature measures, or vectors, are computed automatically and can either be used for retrieval or stored in the database for future queries. (57 references)…

Results from an analysis of 1,025,010 Excite queries from 2001 are compared to similar Excite datasets from 1997 to 1999. Overall, results indicate that multimedia Web searching is undergoing major changes as Web content and searching evolves. (AEF)

With "Chemical Abstracts" and "Science Citation Index" both now available for citation searching, this study compares the duplication and uniqueness of citing references for works of chemistry researchers for the years 1999-2001. The two indexes cover very similar source material. This analysis of SciFinder Scholar and Web of…

Discussion of user interfaces to information retrieval systems focuses on interfaces that incorporate thesauri as part of their searching and browsing facilities. Discusses research literature related to information searching behavior, information retrieval interface evaluation, search term selection, and query expansion; and compares thesaurus…

Describes a study that examined four sources of LC-MARC cataloging records (a CD-ROM version available through Bibliofile, an online version from DIALOG, and two bibliographic utilities, OCLC and the Research Libraries Information Network) to determine the extent to which exact and/or helpful cataloging is present in each. (two references) (CLB)