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Janes, Joseph W.; Rosenfeld, Louis B. – Proceedings of the ASIS Mid-Year Meeting, 1992
Examines historical and current difficulties in information retrieval, including the tendency of technology, because of the problems of scale and distribution, to make information invisible to users. Attempts to organize networked resources are described, and serendipity is proposed as a model for future retrieval. (two references) (MES)
Descriptors: Classification, Computer Networks, Futures (of Society), Information Networks

Wildemuth, Barbara M. – Library Quarterly, 1993
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…
Descriptors: Adoption (Ideas), Information Science, Medical Education, Models

Paice, Chris D. – Information Processing and Management, 1991
Proposes that topic representations should consist of excerpts from domain thesaurus, generated by spreading activation technique. Algorithm for generating excerpts is outlined and exemplified, and problem of assessing resemblance between two excerpts is discussed. Whether existing thesauri are adequate for this purpose is questioned, and ideas…
Descriptors: Algorithms, Computational Linguistics, Information Retrieval, Models

Croft, W. Bruce; Turtle, Howard R. – Information Processing and Management, 1993
Reports information retrieval experiments comparing the performance of a probabilistic retrieval model that incorporates interdocument links with the simpler spreading activation strategy. Results indicated that the overall improvement obtained by including hypertext links in the retrieval model was low. (30 references) (EA)
Descriptors: Citations (References), Comparative Analysis, Heuristics, Hypermedia

Iivonen, Mirja; Sonnenwald, Diane H. – Journal of the American Society for Information Science, 1998
Proposes a model of the search term selection process based on an empirical study of professional searchers during the pre-online search stage; the model characterizes the selection of search terms as the navigation of different discourses. Six discourses emerged as sources of search terms: controlled vocabularies; documents and the domain; the…
Descriptors: Databases, Discourse Analysis, Indexing, Models

Ottaviani, J. S. – Journal of the American Society for Information Science, 1994
Discusses precision and recall in information science and proposes a new model based on fractal geometry for clusters of relevant documents. Search strategies for retrieving a group of relevant documents are reviewed; fractal sets and chaotic processes are described; and the new model is explained. (Contains 43 references.) (LRW)
Descriptors: Chaos Theory, Cluster Grouping, Fractals, Information Retrieval

Ford, Nigel – Journal of the American Society for Information Science, 1999
Explores similarities between research approaches characterizing different paradigms in information science and different information-processing styles of individual researchers. Proposes a model of the way in which new knowledge is generated, based on these similarities. The model focuses on "research pathologies," and ways in which the…
Descriptors: Cognitive Processes, Comparative Analysis, Information Processing, Information Science
Pirolli, Peter – Cognitive Science, 2005
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…
Descriptors: Internet, Models, Web Sites, Cues
Mozer, Michael C. – 1984
This paper reports on an application of parallel models to the area of information retrieval and argues that massively parallel, distributed models of computation, called connectionist, or parallel distributed processing (PDP) models, offer a new approach to the representation and manipulation of knowledge. Although this document focuses on…
Descriptors: Bibliographic Coupling, Computer Software, Databases, Induction

Gordon, Michael D. – Information Processing and Management, 1988
Describes the three subsystems of an information retrieval system (document descriptions, queries, and matching algorithms) and argues that the interdependency of these subsystems requires adaptation for the system to perform when any component changes. An algorithm for redescribing documents, in response to changes in queries and retrieval rules,…
Descriptors: Algorithms, Feedback, Information Retrieval, Models

Fidel, Raya – Library and Information Science Research, An International Journal, 1984
Describes use of case study method to systematically develop model of online searching behavior in which study design is flexible, data gathering and analyses are determined by subject matter, and specific procedures are decided upon while study progresses. Problems and measures taken to reduce their effect are discussed. (Eleven references are…
Descriptors: Case Studies, Data Analysis, Data Collection, Information Retrieval

Daniels, Craig E. – Information Services and Use, 1984
Advocates the integration of online instruction into business school curriculums and presents a curricular model that has evolved from author's experiences--introductory lecture, group planning and development on online search strategy, group online searching. Instructor training, required equipment, and databases and costs are considered. Three…
Descriptors: Business Administration Education, Course Content, Curriculum Design, Higher Education
Callison, Daniel – School Library Media Activities Monthly, 1997
"Mental modeling" refers to a student's ability to visualize or comprehend the information research process. This article reviews 50 years of changing conceptions of how we learn: behaviorist, cognitivist, and constructivist perspective; describes the application of three "mental models" to interactive technology; and discusses…
Descriptors: Behaviorism, Cognitive Psychology, Constructivism (Learning), Decision Making
Cool, Colleen – Proceedings of the ASIS Annual Meeting, 1997
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…
Descriptors: Cognitive Processes, Information Retrieval, Information Seeking, Information Sources
Burdick, Tracey A. – School Library Media Quarterly, 1996
Analyses of the search styles of 47 female and 56 male high school students revealed that an equal number of males and females focused clearly and remained detached (Detached Navigators) or focused clearly and became involved (Involved Navigators). Gender differences were found in topics, task perception, and affective experience. Also discusses…
Descriptors: Data Analysis, High School Students, High Schools, Information Seeking