Provides preliminary results from a study of mediated information retrieval at the University of Sheffield (United Kingdom) based on data from 121 information seekers who requested mediated searches. Focuses on results related to the relationship between participants' gender, cognitive styles, and information seeking behaviors. (Contains 21…

Findings from three separate studies of relevance judgments by 44 initial online search users were examined. Results show that, for users conducting their initial search on a particular information problem, the number of items judged "partially" relevant, not item judged "highly" relevant, were positively correlated with important changes in…

Explores the relationship between the concept of uncertainty in information seeking within a model of the problem-solving process and variables derived from other models, based on longitudinal data collected in the United Sates and the United Kingdom that investigated the processes of mediated information retrieval searching during human…

Reports findings from a study of searching behavior by over 200,000 users of the Excite search engine. Analysis of over one million queries revealed most people use few search terms, few modified queries, view few Web pages, and rarely use advanced search features. Concludes that Web searching by the public differs significantly from searching of…

Results from an analysis of 1,025,010 Excite queries from 2001 are compared to similar Excite datasets from 1997 to 1999. Overall, results indicate that multimedia Web searching is undergoing major changes as Web content and searching evolves. (AEF)

This report, selected from the results of a larger study of online searching, focuses on the sources of search terms. Terms from users, professional intermediaries, thesauri, and relevance feedback are examined; and the relevance of retrieved items is discussed for each source of search terms as well as for combinations of sources. (12 references)…

Examines visual information needs as expressed in users' Web image queries on the Excite search engine. Discusses metadata; content-based image retrieval; user interaction with images; terms per query; term frequency; and implications for the development of models for visual information retrieval and for the design of Web search engines.…

Presents the theoretical framework and research design of a project based on longitudinal data collected in the United Sates and the United Kingdom that investigated the processes of mediated information retrieval searching during human information-seeking processes. Topics include problem-solving; uncertainty; cognitive styles; and…

This study investigates the nature, manifestations, and behavior of successive searching by users in digital environments, and establishes criteria for use in the design of information-retrieval interfaces and systems supporting successive-searching behavior. Study includes two projects--one based at the University of North Texas, one at the…

This study uses the human approach to examine the sources and effectiveness of search terms selected during 40 mediated interactive database searches and focuses on determining the retrieval effectiveness of search terms identified by users and intermediaries from retrieved items during term relevance feedback. (Author/JKP)

Investigates the regions across a distribution of users' relevance judgments. A multidimensional instrument was designed using four scales for collecting, measuring, and describing end-user relevance judgments, and was administered to 21 end-users who conducted searches on their own information problems and made relevance judgments on a total of…

Reports results from a study exploring the information retrieval (IR) and types of interactive feedback during mediated IR. Five types of interactive feedback were identified, extending the interactive IR model to include relevance, magnitude, and strategy interactive feedback. Implications for further research investigating the nature and models…

Describes a study that investigated search intermediaries' requests for information from patrons during mediated online searching in an academic library. Topics of search intermediaries' elicitations include search terms and strategies, database selection, relevance of retrieved items, patrons' knowledge and previous information seeking, and other…

Proposes a useful concept of relevance as a relationship and an effect on the movement of a user through the iterative stages of their information seeking process, and that users' relevance judgments can be plotted on a Three-Dimensional Spatial Model of Relevance Level, Degree and Time. Discusses implications for the development of information…

Presents findings from four studies of the prevalence of multitasking information seeking and searching by Web (via the Excite search engine), information retrieval system (mediated online database searching), and academic library users. Highlights include human information coordinating behavior (HICB); and implications for models of information…