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Showing 1 to 15 of 130 results Save | Export
Peer reviewed Peer reviewed
Oldroyd, Betty K.; Schroder, J. J. – Online Review, 1982
Reviews the advantages and disadvantages of different types of term combination using the positional logic capability of online information retrieval systems and describes a study in which searches for material on "microwave integrated circuits" were conducted in order to find the most economical way of generating the most relevant…
Descriptors: Comparative Analysis, Databases, Efficiency, Information Retrieval
Peer reviewed Peer reviewed
Oldroyd, B. K. – Online Review, 1984
Identifies characteristics of the experienced online searcher and discusses the results of three searches carried out by a variety of searchers in widely differing subject fields--presence of arsenic in coal, problems of working alone in laboratory or work area, and spectral sensitivity of the insect eye. (8 references) (EJS)
Descriptors: Comparative Analysis, Databases, Information Retrieval, Online Systems
Saba, Virginia Kathleen Joseph – 1981
Intended to provide the nursing community with a comparative analysis of four major computerized document retrieval systems and one manual system providing coverage of the nursing literature, this study compares the indexing vocabulary, database coverage, and retrieval performance of the Educational Resource Information Center (ERIC),…
Descriptors: Bibliographies, Comparative Analysis, Databases, Indexes
Peer reviewed Peer reviewed
Wade, Stephen; And Others – Online Review, 1988
A comparative evaluation of two computerized reference retrieval systems, INSTRUCT (a statistically-based system) and PLEXUS (a knowledge-based system) examined their retrieval effectiveness for a set of 19 queries and 512 documents on gardening. Best results were obtained by using terms suggested by PLEXUS as the basis for an INSTRUCT search. (36…
Descriptors: Comparative Analysis, Computer Software, Expert Systems, Information Retrieval
Peer reviewed Peer reviewed
Fidel, Raya – Journal of the American Society for Information Science, 1984
Based on systematic observations of five experienced online searchers, this model compares two searching styles: operationalist, which aims at optimal strategies to achieve precise retrieval and uses a large range of system capabilities, and conceptualist, which analyzes the request by seeking to fit it into a faceted structure. (13 references)…
Descriptors: Case Studies, Comparative Analysis, Information Retrieval, Man Machine Systems
Peer reviewed Peer reviewed
Cleverdon, Cyril – Information Services and Use, 1984
Discusses alternatives to the Boolean system that would enable users of online bibliographic databases--primarily those containing scientific and technical information--to obtain their required level of performance at lowest cost. Highlights include recall and precision factors (natural and controlled language, titles, abstracts, quorum function)…
Descriptors: Comparative Analysis, Databases, Information Retrieval, Online Systems
Peer reviewed Peer reviewed
Meyer, Daniel E.; And Others – Online Review, 1983
Evaluates overlapping coverage of 21 scientific databases used in 10 online pesticide searches in an attempt to identify minimum number of databases needed to generate 90 percent of unique, relevant citations for given search. Comparison of searches combined under given pesticide usage (herbicide, fungicide, insecticide) is discussed. Nine…
Descriptors: Comparative Analysis, Databases, Information Retrieval, Online Systems
Peer reviewed Peer reviewed
Eisenberg, Michael; Barry, Carol – Journal of the American Society for Information Science, 1988
Describes a study that examined the effect of the order of document presentation on the relevance scores assigned to documents, and the effect of the rating scale used (category rating or magnitude estimation) on order effects. Areas which need further investigation are identified. (13 references) (CLB)
Descriptors: Comparative Analysis, Information Retrieval, Measurement Techniques, Online Systems
Settel, Barbara; Cochrane,Pauline A. – Database, 1982
Presents findings of project aimed at improving subject access in online library catalogs by generating records with augmented subject descriptions, termed BOOKS records, and comparing them with MARC records. Procedures involved in the selection of subject descriptions to generate a BOOKS record are described and illustrated. Six references cited.…
Descriptors: Books, Comparative Analysis, Indexing, Information Retrieval
Sharma, V. S. – Database, 1982
Compares and evaluates the databases covering the literature of sports and recreation. Discusses information scatter in the discipline, exhaustivity of coverage within particular databases, and search strategies, vocabulary control, and database overlap. Included are nine data tables and four appendices illustrating search results. (JL)
Descriptors: Athletics, Comparative Analysis, Databases, Information Retrieval
Peer reviewed Peer reviewed
Borlund, Pia; Ingwersen, Peter – Journal of Documentation, 1997
Describes the development of a method for the evaluation and comparison of interactive information retrieval systems, which are based on the concept of a simulated work-task situation and the involvement of real end users. Highlights include real and simulated information needs; relevance assessments; and the dynamic nature of information needs.…
Descriptors: Comparative Analysis, Computer Simulation, Evaluation Methods, Information Needs
Peer reviewed Peer reviewed
Morehead, David R.; Rouse, William B. – Information Processing and Management, 1982
Five models which perform search tasks of the Data Base Access and Search Environment (DBASE) are presented and used for comparison with subject search performance--unconstrained (rule-based, decision theoretic) and constrained (optimal rule-based, rule-based, probabilistic rule-based). Previous experiments and the modeling approach are briefly…
Descriptors: Comparative Analysis, Databases, Information Retrieval, Information Seeking
Peer reviewed Peer reviewed
Dillon, Martin; Gray, Ann S. – Journal of the American Society for Information Science, 1983
Provides background of automatic indexing and overview of Fully Automatic Syntactically based Indexing of Text (FASIT), a system based on idea that content-bearing words belong to certain syntactic categories. Results of comparison of FASIT with thesaurus and stem-based indexing systems on database of 250 documents and 22 queries are summarized.…
Descriptors: Automatic Indexing, Comparative Analysis, Databases, Information Retrieval
Peer reviewed Peer reviewed
Zhang, Jin; Rasmussen, Edie M. – Information Processing & Management, 2002
Retrieval performance of the iso-content-based angle similarity measure within the angle, distance, conjunction, disjunction, and ellipse retrieval models is compared with retrieval performance of the distance similarity measure and the angle similarity measure. Results show the iso-content-based angle similarity measure achieves satisfactory…
Descriptors: Comparative Analysis, Information Retrieval, Information Seeking, Information Systems
Peer reviewed Peer reviewed
Swanson, Don R. – Library Quarterly, 1986
The objective relevance of a document to a request is crucial to the design and testing of bibliographic retrieval systems, while subjective relevance is paramount in the use of such systems. The distinction provides a rationale for a trial-and-error mode of interaction with information systems. (Author/EM)
Descriptors: Comparative Analysis, Databases, Information Needs, Information Retrieval
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