With the advent of the Web, the notion of "information retrieval" has acquired a completely new connotation and currently encompasses several disciplines ranging from traditional forms of text and data retrieval in unstructured and structured repositories to retrieval of static and dynamic information from the contents of the surface and deep Web.…

Usability testing on library search tools was conducted with ten students and eighteen library staff members at Syracuse University. The study addressed three research questions: (1) Do the ways in which librarians carry out search tasks on the library Web site vary from those of student users?; (2) Are those variations indicative of different…

Discussion of information retrieval focuses on theoretical and empirical advances in knowledge-based information retrieval. Topics discussed include the use of natural language for queries; the use of expert systems; intelligent tutoring systems; user modeling; the need for evaluation of system effectiveness; and examples of systems, including…

Describes a simple six-step searching model designed to deliver good results without introducing complexities likely to confuse the naive user. The findings of tests that compared the results of the easy search model with expert searches are presented, and conclusions about end user training are discussed. (nine references) (CLB)

Discusses end-user searching in Boolean information retrieval systems considers the role of search intermediaries and proposes a model of user preferences that incorporates a user's profile. Highlights include document representation; information queries; document output ranking; calculating user profiles; and selecting documents for a local…

Examines various ways of dividing the labor of an information search between the person and the system. Different configurations of two dimensions--degree of system involvement in searching and types of search activity carried out by the person or system--are discussed. Recommendations for further research and development are offered. (49…

Describes a study that was conducted to model the navigation patterns followed by users when retrieving information in hypertext systems. The development of two frequency distribution models is explained, the influence of search tasks on path patterns is discussed, and further research is described. (Contains 17 references.) (LRW)

Reviews studies on the relationship between task performance and information searching by end-users, focusing on information searching in electronic environments and information retrieval systems. Topics include task analysis; task characteristics; search goals; modeling information searching; modeling search goals; information seeking behavior;…

Discusses problems facing naive users of interactive information systems (IIS) that have been identified through classroom research. Impediments to successful use of IIS are students' inability to make use of non-text-based information sources and difficulty choosing appropriate search strategies. Mental models developed by users may provide clues…

Provides contextual frameworks for the nature of information technology, the information universe, and the information search as they relate to online information retrieval. Theories on search strategy are reviewed, cognitive models of information seeking are highlighted, and future directions for research on users' search processes are discussed.…

Discussion of user-relevance judgments in information retrieval focuses on findings from four separate studies of relevance judgments by 55 users conducting their initial online search on a particular information problem. Highlights include a theoretical framework, models of relevance, and implications for information-retrieval system design and…

Presents a general model of the information-seeking process. Various aspects of information-seeking behavior are projected over an organizational and behavioral framework; three dimensions of information-seeking behavior are described, i.e., the conditions, the context, and the process; interactions among these dimensions are considered; and…

Discussion of positivist and interpretive approaches to research and postpositivism focuses on two studies that apply interpretive research in different ways: an exploratory study of user-developed computing applications conducted prior to a positivist study and a study of end-user searching behaviors conducted concurrently with a positivist…

This article describes rational analyses and cognitive models of Web users developed within information foraging theory. This is done by following the rational analysis methodology of (a) characterizing the problems posed by the environment, (b) developing rational analyses of behavioral solutions to those problems, and (c) developing cognitive…

Describes a model of information retrieval as social interaction, which distinguishes between three types of information interaction goals: (1) task-oriented; (2) topically oriented; and (3) those centered around situation assessment (SA). Results suggest that SA is an important cognitive activity in new information retrieval environments; SA…