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)

Describes the use of transaction log analysis of the online catalog at the University of Nevada, Reno, libraries to help evaluate reasons for unsuccessful user searches. Author, title, and subject searches are examined; problems with Library of Congress subject headings are discussed; and title keyword searching is suggested. (11 references) (LRW)

This review deals with online catalog enhancements and developments over the past two to three years, including bibliographic standards; cataloging rules; MARC; bibliographic records; subject access, including keyword searching, Library of Congress Subject Headings, multiple vocabularies, and classification; refining searches; enriching…

Discusses features of online public access catalogs: (1) demonstration of relationships between records; (2) provision of entry vocabularies; (3) arrangement of multiple entries on the screen; (4) provision of access points; (5) display of single records; and (6) division of catalogs into separate files or indexes. User studies and other research…

Presents a model for the design of online catalog subject access based on three principles: the uncertainty of subject indexing, the need for greater variety in searcher's queries, and the complexity of the search process. The proposed system is based on existing Library of Congress subject cataloging. (EM)

Techniques for building a world-wide information infrastructure by reverse engineering existing databases to link them in a hierarchical system of subject clusters to create an integrated database are explored. The controlled vocabulary of the Library of Congress Subject Headings is used to ensure consistency and group similar items. Each database…

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 a study that investigated the value of various access points in online catalog records by determining their usefulness to searchers who requested location information for items. Results of a transaction log analysis of the Illinois Library Computer Systems Office online union catalog for 45 academic libraries are discussed. (LRW)

This article studies the performance of online catalog user queries involving personal names and recommends system improvements based on the results. It examines various personal name queries, the construction of bibliographic data, and subject headings. Testing done on an experimental online catalog found search tree designs to reduce system…

Presents an Intelligent Negotiating Neural Network Design Model for solving the problem of poor information retrieval in subject searches of online catalogs. The purpose of the network, its architecture, and three different sessions of the user interface are described. Nineteen figures showing screens of the three sessions are appended. (Contains…

Computerized systems have dramatically altered the way that information can be organized, published, searched and retrieved. This paper: (1) examines the components of subject access in online systems; (2) identifies the potential for subject access enhancements, such as enriching the contents of the database and improving user-system interaction,…