Reports on comparison of costs of manual versus computer reference service at Deerfield Public Library (Illinois) and Houston Public Library. Costs for online services, equipment, searches per database, salaries, reference books, business reference subscriptions, periodicals, and labor are included. Unknown costs and time involved to answer…

Describes a computer program designed to manage statistics about online searches which reports the number of searches by vendor, purpose, and librarian; calculates charges to departments and individuals; and prints monthly invoices to users with standing accounts. (CLB)

Discusses search engines on the World Wide Web and information retrieval from the Internet; describes categories and special features of Web-based databases and compares them with traditional databases; and presents a review of the literature on the testing and evaluation of Web-based search engines. (Author/LRW)

Describes three commercial, numeric databases that are available in microcomputer diskette format: Micro/Scan Disclosure; Wharton Econometric Forecasting Associates World Economic Service; and Trinet's Survey of Commercial Buying Power. Advantages and disadvantages of the diskette format, search strategies, and a selected list of eight suppliers…

This first article of a three-part series provides an overview of the record format, organization, and coverage of two databanks providing legal information. Tables cover record segments and fields and inclusion of information from federal libraries, state cases, United Kingdom and French law libraries, and additional libraries and services. (EJS)

Describes program at Pennsylvania State University Libraries designed to inform faculty and graduate students about activities of library's fee-based search service and to explain individual subscription alternatives available to microcomputer owners for running searches. Registration form, results of pre-session and post-session questionnaires,…

Describes a novel design of a Table Browser for casual users of statistical data. Focuses on the overall system architecture and the user interface. Describes the prototype interface and presents results of experiments testing the efficacy of the multi-threaded data flow. (AEF)

Description of the International Nuclear Information System includes its history, organizational structure, subject classification scheme, thesaurus, input standards, and various products and services generated by the system. Appendices provide a list of participating countries, subjects covered by the system, and a sample output record.…

Zipfian laws for frequency distributions of word pairs and longer phrases are derived from text sample analysis. From crossing of Zipfian curves, it is deduced that number of multi-word phrases that occur frequently in text is surprisingly small, of same order of magnitude as number of individual word-types. (8 references) (EJS)

Presents typology of online search heuristics consisting of six main classes: philosophical attitudes and overall approach; language of problem description; record and file structure; concept formulation and reformulation; recall and precision; and cost efficiency. Heuristics in each of the six classes are listed and selected examples are briefly…

Discussion of academic library online catalog users' queries highlights a new approach to displaying retrieved subject headings in subject searching, the exact-display approach, that was designed to encourage users to browse bibliographic information. Demonstrates an implementation of the exact-display approach in an experimental online catalog.…

Describes the design and development of a prototype expert system called ONLINE-EXPERT that helps users select online databases and vendors that meet users' needs. Search strategies are discussed; knowledge acquisition and knowledge bases are described; and the Analytic Hierarchy Process (AHP), a decision analysis technique that ranks databases,…

Presents overview of library classification and automation (1940-84), including use of Dewey Decimal and Library of Congress classification in online cataloging systems. Highlights include classification number access in existing online catalogs, functions of classification records, specifications for authority file records, and the nature of…