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Bichteler, Julie; Eaton, Edward A., III – Journal of the American Society for Information Science, 1980
Describes a linkage similarity measure which takes into account both the bibliographic coupling of documents and their cocitations and compares the resulting predictions of relevance to the user's evaluations of the papers used in a test collection. (FM)
Descriptors: Bibliographic Coupling, Citations (References), Correlation, Information Retrieval
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Maron, M. E. – Journal of the American Society for Information Science, 1982
Discusses use of associative search techniques and theoretical approaches to document retrieval problems contrasting two different ways of improving system performance: appending associative search techniques to conventional document retrieval systems and designing document retrieval systems based on probabilistic design principles. Four…
Descriptors: Correlation, Information Retrieval, Models, Online Systems
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Can, Fazil; Ozkarahan, Esen A. – Journal of the American Society for Information Science, 1987
Introduces the concept of cover coefficient to indexing theory and discusses a way of computing term discrimination values by using the cover coefficient concept, index-term selection, and weight modification. This method is compared to an approach that uses similarity coefficients. (Author/EM)
Descriptors: Correlation, Expert Systems, Heuristics, Indexing
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Thompson, Paul – Journal of the American Society for Information Science, 1990
Presents results of simulations that were conducted to test the effects of errors in estimation of individual term probabilities on the performance of a probabilistic information retrieval (PIR) system. Assigning index terms to documents is described; an information retrieval system called Helpnet is explained; and relevance, ranking, and…
Descriptors: Correlation, Evaluation Methods, Indexing, Information Retrieval
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Bruce, Harry W. – Journal of the American Society for Information Science, 1994
Discussion of the situational dynamism of user-centered relevance estimation focuses on a study that used magnitude estimation to express the relative importance of each document retrieved from an information retrieval system. Topics addressed include relevance estimation as a cognitive schema and the relationship between learning and user…
Descriptors: Cognitive Processes, Correlation, Evaluation Methods, Graduate Students
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Su, Louise T. – Journal of the American Society for Information Science, 1994
Discussion of the appropriateness of evaluation criteria and measures for information retrieval focuses on a study that investigated the appropriateness of 20 measures, including precision and recall, for evaluating interactive information retrieval performance representing 4 major evaluation criteria. The importance of user satisfaction in…
Descriptors: Correlation, Evaluation Criteria, Evaluation Methods, Higher Education
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Auster, Ethel; Lawton, Stephen B. – Journal of the American Society for Information Science, 1984
Investigates relationships among: techniques used by search analysts during interviews with users before engaging in online retrieval of bibliographic citations ("open" and "closed" questions, pauses of different lengths); amount of new information gained by user as result of search; and user's satisfaction with quality of…
Descriptors: Correlation, Information Needs, Information Retrieval, Information Seeking
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Gluck, Myke – Journal of the American Society for Information Science, 1995
Presents brief accounts of the user-based performance measure of relevance and the information system-based performance measure of competence. Results of an experiment are reported that used a geographic information system to illustrate how collecting and analyzing data from both a system and a user view of performance can be beneficial. (73…
Descriptors: Competence, Correlation, Hypothesis Testing, Information Systems
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Bayer, Alan E.; And Others – Journal of the American Society for Information Science, 1990
Discusses the intellectual structure of the sciences and describes a study that was conducted to test the usefulness of author cocitation analysis for empirically deriving groupings of intellectual leaders in the field of sociology. Results are contrasted with traditional subjective methods of codification of a field. (35 references) (LRW)
Descriptors: Authors, Citation Analysis, Cluster Grouping, Codification
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Ellis, David; And Others – Journal of the American Society for Information Science, 1996
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)
Descriptors: Correlation, Evaluation Methods, Full Text Databases, Hypermedia
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Wildemuth, Barbara M.; And Others – Journal of the American Society for Information Science, 1995
Discusses the relationship between personal knowledge in a domain and online searching proficiency in that domain, and the relationship between searching proficiency and database-assisted problem-solving performance based on a study of medical students. Search results, selection of terms, and efficiency were found to be related to problem-solving…
Descriptors: Correlation, Databases, Information Retrieval, Medical Education
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Losee, Robert M.; Paris, Lee Anne H. – Journal of the American Society for Information Science, 1999
Compares the performance of the Target and Freestyle commercial search engines. Discusses traditional performance measures such as precision and recall, analytic models of performance, document rankings, query difficulty and correlates with other performance characteristics, and future research needs. (LRW)
Descriptors: Comparative Analysis, Correlation, Futures (of Society), Measurement Techniques
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Aigrain, Philippe; Longueville, Veronique – Journal of the American Society for Information Science, 1994
Describes an evaluation model for expansion systems in information retrieval, i.e., systems expanding a user selection of documents to provide the user with a larger set of documents sharing the same or related characteristics. Highlights include a test protocol and evaluation measures for the efficiency of expansion systems. (Contains 29…
Descriptors: Correlation, Databases, Efficiency, Evaluation Methods
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Latta, Gail F.; Swigger, Keith – Journal of the American Society for Information Science, 1992
Discusses the application of theories of cognitive modeling to information systems design and describes research that investigated the validity of the repertory grid for incorporation into intelligent front-end interfaces for information storage and retrieval systems. Personal construct theory is discussed and future research is suggested. (67…
Descriptors: Cluster Analysis, Computer System Design, Correlation, Databases