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Abstract

State of the art review of recent models of literatures that offer visual clues to relationships among writings that are often based term occurences and co-occurences. Considers the advantages of 2 dimensional and 3 dimensional displays of relationships over other models; bibliographic models; editorial models; bibliometric models; user models; and synthetic models. Discusses the online visualization and offline visualizations and the problems of visualizing changing literatures in a static medium, such as hard copy print. Argues that insufficient attention has been paid to user friendly visual design with the related questions of new capabilities and scaling up to larger collections. Concludes with the hope that, in future, the same visualization interface used for bibliographic domain analysis will be used for document retrieval

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Abstract

Current research on user interfaces to online public access catalogs is reviewed in an attempt to identify research methods and findings applicable to the design of effective user interfaces to online public access catalogs. A broad definition of user interface is employed which includes data structures, in addition to searching and indexing software. The following features of online public access catalogs are discussed: the demonstration of relationships between records, the provision of entry vocabularies, the arrangement of multiple entries on the screen, the provision of access points, the display of single records, and the division of the catalog into separate files or indexes. For each feature, user studies and other research on online public access catalogs are reviewed and those findings summarized which provide insight into user needs concerning that particular feature; issues are identified and directions for further research are suggested. Implications for cataloging codes and standards and system design are discussed

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Abstract

Reviews the literature of designing screens (interfaces) in displays for terminals accessing OPACs. Gathers from scattered and specialised sources the basic principles so that librarians at all levels can approach the screen design process with confidence. Discusses the physical screen and general principles; menus, commands, inquiry screens, and messages; and finally, organisational considerations