Traces the development of online public access catalogs (OPACs) and compares what has occurred with a 1964 article that outlined recommendations for a future card catalog. Subject access is emphasized, including Library of Congress Subject Headings, expansion of OPACs, user-friendly interfaces, new technologies, and current visions of the future…

Discusses the graphical user interface (GUI) online public access catalog (OPAC), a user interface that uses images to represent options. Topics include user interface design for information retrieval; designing effective bibliographic displays, including subject headings; two design principles; and what GUIs can bring to OPACs. (LRW)

Discusses problems with subject searches in online library catalogs and examines theoretical principles for the design of effective information retrieval systems. Probabilistic ranking methods are discussed, and an experimental online catalog called CHESHIRE is described. It is noted that CHESHIRE uses classification clustering, provides natural…

Presents the evolution of subject access to works about individual corporate bodies in Anglo-American subject cataloging practice. Comparison is made to works of individual biography, the lack of comparable subject access is explored, and recommendations are made to restore parity by using syndetic reference structure through automated maintenance…

Reviews methods to improve online catalogs for subject searching and describes the design of an expert system front-end to improve subject access in online public access catalogs that focuses on search strategies. Implementation of a prototype system at the National University of Singapore is described, and reformulation strategies are discussed.…

Discusses problems in OPAC (online public access catalog) searching, describes the value and styles of pathfinders that are used as subject guides, and illustrates how to include them in a NOTIS system. Future possibilities are considered, and examples of NOTIS screen displays for pathfinders are appended. (Author/LRW)

Discusses the difference in subject access in OPACs (online public access catalogs) between subject searching (authority, alphabetic, or controlled vocabulary) versus keyword searching (uncontrolled, free text, natural language vocabulary). Compares a query on the term "garbage" in two online catalogs and discusses results. (Author/LRW)

Describes a project at the University of Kent to build a thesaurus based on existing subject terms for a collection of cartoon drawings and then to convert the existing cataloging system to new thesaurus terms for an online catalog. A graphical thesaurus editor is described, and future work is discussed. (Author/LRW)

Discussion of improving subject access in online library catalogs focuses on a study that used a book description from "Book Review Digest" to evaluate the information on the bibliographic record found on the OCLC database. Matching by Library of Congress Subject Headings and by keywords in the title are discussed. (22 references) (LRW)

A study was conducted that used transaction logs to identify the characteristics of the most complex or problematic user queries. Enhancements are recommended in the design of online catalogs that use search trees to control system responses and to determine appropriate subject-searching terminology and technique. Contains 21 references and 12…

Describes surveys of catalogers, geo-science faculty, and graduate students that explored the provision and use of subject access through geologic or geographic names. Strategies for improving such access through cataloging techniques, user education, and the use of advanced technologies are discussed. (21 references) (CLB)

Discusses problems with Library of Congress Subject Headings (LCSH) not keeping current, particularly with ethnic and racial headings. A historical review of changes over the past 20 years is provided, including various studies of LCSH; Canadian adaptations are described; and making subject heading changes in online catalogs is discussed.…

Describes results of a study of transaction logs from three university libraries' online catalogs that analyzed subject queries to determine the extent to which they matched subject headings in the Library of Congress Subject Headings (LCSH). Computer and manual analyses are described, and user satisfaction with LCSH matches is considered. (14…

Discussion of problems with retrieval of records in library online public access catalogs (OPACs) focuses on an ongoing research project at the Indiana University of Pennsylvania (IUP) that has been trying to improve subject retrieval vocabulary control using natural and thesaural language and on the design of a good graphical user interface.…

Discussion of the cataloging of visual materials focuses on special considerations for photographs. Functions of the catalog record are considered, cataloging tools for visual materials are described, examples of MARC records for photographs from the Library of Congress are given, and sample subject entries are presented. (five references) (LRW)