Discusses characteristics of typical online public access catalogs (OPACs) and examines patron use via printouts of transaction logs for three separate systems. Desirable features of OPACs (mnemonic search commands, boolean operators, forgiveness or automatic truncation, browsing a subject heading index, suggestive prompts) and need for…

Discussion of precision in information retrieval highlights a prototype online catalog, ILSA (Improving Library Subject Access), developed at Indiana University of Pennsylvania that uses subject clusters and classification. Topics addressed include problems with keyword searching, controlled vocabulary, and thesauri; natural language mapping…

InfoQUEST is a microcomputer-based online public access catalog, designed for the small library handling file sizes up to 25,000 records. Based on the IBM-PC, or compatible machines, the system will accept downloading, in batch mode, of records from the library's file on the UTLAS Catalog Support System. (Author/EJS)

Describes development of an online catalog for Dartmouth College Libraries by Dartmouth and Bibliographic Retrieval Services (BRS). Highlights include Dartmouth parameters; capability of creating a fully inverted file for entire bibliographic citation provided by BRS software; features of BRS/Dartmouth user interface; telecommunications links; and…

Online public access catalogs from 67 libraries using NOTIS software were searched using Internet connections to determine the positional operators selected as the default keyword operator on each catalog. Results indicate the lack of a processing standard for keyword searches. Five tables provide information. (Author/AEF)

Discussion of a library media center's online microcomputer catalog as compared to use of a traditional catalog includes: patron use (students and teachers), advantages for library instruction, access availability study, reaction by users, catalog system management, and activity journals for documentation. Twenty-three related readings are…

Describes a project that demonstrates subject searching in an experimental online catalog based on academic library databases that were enhanced with search trees; compares the retrieval effectiveness of search trees with random subject searching approaches; evaluates system and retrieval effectiveness; and discusses proposed research. (Contains…

Traditional methods of studying and evaluating use of online public access catalogs (OPACs) are discussed and compared to verbal protocol method (spoken records of people describing their work that uncover detailed data about thinking during problem solving). Results of Carnegie-Mellon University protocol study of OPAC users are discussed. (22…

Describes four major subsystems of OCLC's LS/2000, an integrated local library system which can be adapted to wide variety of library environments: multibranch circulation and online catalog searching; online cataloging and authority file maintenance; management report generation; and system set up parameters that translate local library policy…

The feasibility of using the verbal protocol method as a means of conducting field research on the online catalog is examined. As 10 undergraduate students conducted research they talked aloud about what was happening. Potential usefulness of the method in online catalog research is assessed, as a development tool and as a tool to assist reference…

Through a single computerized system, the Libraries Information Access System provides interactive, integrated access to a range of information functions in support of services meeting both academic needs (bibliographic access for research, instructional support) and administrative needs (processing, inventory control, communications, record…