Argues that many ideas and practices of information science, information technology, information retrieval, search strategies, information centers, fee-based information services, linked databases, database management software, scholarly communication networks, multimedia and hypertext, and information grew out of a new "discursive…

Indexing is the preprocessing of information to enable its retrieval, ranging from classification-based (precoordinate) to keyword searching (postcoordinate) approaches. This article describes a framework for modelling information retrieval systems in terms of sets of objects, relationships, and functions and discusses the application of indexing…

Describes a method based on Bayesian networks for searching hypertext systems. Discussion covers the use of Bayesian networks for structuring index terms and representing user information needs; use of link semantics based on constrained spreading activation to find starting points for browsing; and evaluation of a prototype system. (64…

Describes an investigation of the relationship between the levels of interlinker consistency obtained among a group of full-text databases in which internodal links were inserted, and the effectiveness of searches carried out in those databases. Topics include interindexer consistency and retrieval system evaluation. (Author/LRW)

Discussion of hypertext and its uses in the learning process focuses on an experiment in which undergraduate students used hypertext for computer-based learning about databases. Results of a survey of students which explored when and how they used the hypertext, for what purpose, and the types of searching they preferred are reported. (12…

Describes a project at the University of Sheffield that is investigating the use of nearest-neighbor retrieval algorithms for full-text searching. Nearest-neighbor searching is compared with Boolean retrieval and hypertext, and an experimental text retrieval system called INSTRUCT (Interactive System for Teaching Retrieval Using Computational…

Describes a study that compared a hypertext-based bibliographic retrieval system with a traditional Boolean-based system. Results, conducted with novice and experienced searchers, revealed that the Boolean system performed better for tasks with a large number of relevant items, and that searcher experience level did not play a significant role.…

Discusses information retrieval as an inherently interactive process utilizing a variety of information-seeking strategies on informational and meta-informational levels. An interface design for a bibliographic information retrieval system, called BRAQUE (BRowsing And QUEry), that supports user interactions in a two-level hypertext environment is…

Examines six cases of information-seeking behaviors--initiation, selection, exploration, formulation, collection, and presentation--as undergraduate students work through class exercises using Perseus, a Greek history information database. Describes the four themes that emerged from the learners' online protocols and interactions. (AEF)

Discussion of search behavior in electronic environments focuses on the development of GRIP (Graphic Representor of Interaction Patterns), a graphing tool based on HyperCard that produces graphic representations of search patterns. Search state spaces are explained, and forms of data available from electronic searches are described. (34…

Describes a study that investigated the effects of search tools and learner cognitive styles on performance in searches for information within a hypermedia database. Students in a university English-as-a-Second-Language program were assigned to one of four treatment groups, and results show a significant interaction between search tool and…

This study investigated the effects of interface tools and learner cognitive styles on performance in searches for information within a hypermedia database. The subjects, 75 students in a university English as a Second Language (ESL) program, were blocked for field dependence and assigned to four treatments which differed by the search tool…

Addresses problems with automated bibliographic and full-text storage of scientific articles. The role of the scientific article is described, the structure is explained, current indexing and information retrieval techniques are criticized, new possibilities using a rhetoric syntax or argumentational syntax are explored, and the use of hypertext…

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…

Describes the MenUSE (Menu-based User Search Engine) retrieval system for multilingual database searching and reviews the status of other similar projects funded by the European Communities Commission. A Japanese-English version of MenUSE is explained, including its use of HyperCard software. (LRW)