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Sievert, MaryEllen; Verbeck, Alison – Online Review, 1987
A comparison of ERIC and LISA (Library and Information Science Abstracts) indexing of the three journals--Online, Online Review, and Database--revealed some differences but more similarities in number of terms per article and concepts per article. A vocabulary which distinguished the field of online searching did emerge. (Author/EM)
Descriptors: Comparative Analysis, Databases, Indexing, Online Searching
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Svenonius, Elaine – Journal of the American Society for Information Science, 1986
The issue of free-text versus controlled vocabulary is examined. The history of the issue, which is seen as beginning with the debate over title term indexing in the nineteenth century, is reviewed and questions not satisfactorily addressed by previous research are raised. (Author/EM)
Descriptors: Comparative Analysis, History, Indexes, Indexing
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Crouch, Carolyn J. – Information Processing and Management, 1988
Describes the two basic approaches to the calculation of term discrimination values for automatic indexing. The results of an experiment that investigated the differences between algorithms of these two approaches in terms of their impact on the discrimination value model are reported and discussed. (13 references) (Author/CLB)
Descriptors: Algorithms, Automatic Indexing, Comparative Analysis, Computational Linguistics
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Dubois, C. P. R. – Online Review, 1987
Presents the advantages and disadvantages of free text and controlled vocabulary retrieval techniques and a methodology to assist in deciding on the optimal technique for a particular purpose. The relevance of the techniques for expert systems and full text contexts is also discussed and recommendations for further research are made. (Author/EM)
Descriptors: Comparative Analysis, Expert Systems, Indexing, Online Searching
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Jonak, Zdenek – Information Processing and Management, 1984
Demonstrates efficiency of preparation of query description using semantic analyser method based on analysis of semantic structure of documents in field of automatic indexing. Results obtained are compared with automatic indexing results performed by traditional methods and results of indexing done by human indexers. Sample terms and codes are…
Descriptors: Algorithms, Automatic Indexing, Comparative Analysis, Information Retrieval
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Jung Soon, Ro – Journal of the American Society for Information Science, 1988
Describes and discusses the findings of an experiment that tested the precision of full-text retrieval enhanced by 29 document term weighting algorithms at the lowest, middle, and highest levels of recall, and compared with the precision of full-text retrieval without algorithms and with paragraph retrieval. (29 references) (Author/CLB)
Descriptors: Algorithms, Automatic Indexing, Comparative Analysis, Evaluation Methods
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Davis, Mari – Australian Library Journal, 1987
Discusses the difficulties encountered in accessing online information on women and women's issues that results from the indexing of relevant items across several databases. A project designed to index literature on employment, equality, and gender within a single database is described. (CLB)
Descriptors: Access to Information, Comparative Analysis, Databases, Developed Nations
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Mahapatra, M.; Biswas, S. C. – International Library Review, 1984
Describes research which measured the efficiency of role operators through frequency of appearances in PRECIS input strings for 200 abstracts related to taxation, genetic psychology, and Shakespearian drama. Frequencies of appearance of major categories of role operators, role operators in different subjects, individual main line operators, and…
Descriptors: Comparative Analysis, Indexing, Information Retrieval, Relevance (Information Retrieval)
Piotrowski, Chris; Perdue, Robert W. – 1986
Traditional library skills have been augmented since the introduction of online computerized database services. Because of the complexity of the field, forensic psychology can benefit enormously from the application of comprehensive bibliographic search strategies. The study reported here demonstrated the bibliographic results obtained when a…
Descriptors: Bibliographic Utilities, Comparative Analysis, Databases, Indexing
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White, Howard D.; Griffith, Belver C. – Information Processing and Management, 1987
Describes study that compared and judged the quality of subject indexing in online bibliographic databases. Documents from medical behavioral science literature are used with terms drawn from MEDLINE, PsychINFO, BIOSIS, and Excerpta Medica. Comparative statistics are presented on how each database links related documents and discriminates among…
Descriptors: Behavioral Sciences, Citation Analysis, Cluster Grouping, Comparative Analysis
Sahli, Marilyn Sue – 1981
Analysis of current methods for achieving compatibility or convertibility between two or more indexing languages draws attention to the need for a switching language to establish equivalency between concepts, not terms. In order to examine the assumption of the conceptual equivalency of identical terms in the indexing languages of related subject…
Descriptors: Comparative Analysis, Databases, Definitions, Education
Peer reviewed Peer reviewed
Ro, Jung Soon – Journal of the American Society for Information Science, 1988
A comparison of the effectiveness of information retrieval based on full-text documents with retrieval based on paragraphs, abstracts, or controlled vocabularies was accomplished using a subset of journal articles with nine search questions. It was found that full-text retrieval achieved significantly higher recall and lower precision than did the…
Descriptors: Automatic Indexing, Comparative Analysis, Databases, Evaluation Methods
Peer reviewed Peer reviewed
Trivison, Donna – Information Processing and Management, 1987
Describes study that compared terminology indexing and citation indexing to determine the similarity of documents retrieved. Information science articles from 1971 to 1983 in three journals were studied for term co-occurrences. The distinction between relevant and pertinent documents is discussed, and further research topics are suggested. (LRW)
Descriptors: Bibliographic Coupling, Citation Indexes, Comparative Analysis, Indexing
Peer reviewed Peer reviewed
McCain, Katherine W.; And Others – Information Processing and Management, 1987
Assesses the impact of current coverage and indexing policies on MEDLINE's retrieval performance in the medical behavioral sciences literature by comparing retrievals in EXCERPTA MEDICA, PSYCHINFO, SCISEARCH, and SOCIAL SCISEARCH. Searches were made with descriptors, cited references, and natural language, and recall, precision, and novelty ratios…
Descriptors: Behavioral Sciences, Citations (References), Comparative Analysis, Databases
Leavy, Marvin D. – 1986
Expected Library of Congress Subject Headings (LCSHs) and assigned LCSHs for 161 books requested by faculty in sociology, anthropology, and social work were compared to gauge the likely success of an online subject catalog search for those works. For 80% of the titles checked, inspection of the ninth edition of "Library of Congress Subject…
Descriptors: Academic Libraries, Access to Information, Anthropology, Comparative Analysis
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