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Mahapatra, M.; Biswas, S. C. – Library and Information Science Research, 1985
Two hundred journal articles related to fields of taxation, genetic psychology, and Shakespearean drama published from 1970-1980 were analyzed and PRECIS input strings were drawn. Occasions when input string and index entries looked incomplete and unexpressive after losing context of document are provided with solutions. Role operator schema is…
Descriptors: Classification, Humanities, Indexing, Social Sciences

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

Craven, Timothy C. – Information Processing and Management, 1988
Presents a methodology for extending string indexing from index display production to the provision of descriptor phrases for term proximity searching. Objectives of the extension are discussed, and an illustration of the use of an existing string indexing system for this purpose is given. (14 references) (CLB)
Descriptors: Computational Linguistics, Computer Software, Indexing, Online Searching

Dale, Doris Cruger; Wilson, Betty-Ruth – Library Resources and Technical Services, 1986
An annotated bibliography of materials published during 1984-1985 on subject analysis covers classification, indexing, subject headings, and thesauri. The major theme is the need for improved subject analysis and the new computer technology is seen as the way to achieve it. (EM)
Descriptors: Annotated Bibliographies, Cataloging, Classification, Indexing

Chandrasekharan, N.; And Others – Journal of the American Society for Information Science, 1987
Demonstrates the use of a directed graph model as a tool for finding desirable minimum vocabularies to be used in indexing and information retrieval. The basic algorithm is outlined, possible enhancements to the model are discussed, and further research questions are suggested. (Author/CLB)
Descriptors: Definitions, Dictionaries, Indexing, Information Retrieval

Markey, Karen; Miksa, Francis – Library Resources and Technical Services, 1987
This review of the 1986 literature on subject access covers: (1) general works; (2) organization and history; (3) classification systems; (4) classification theory and method; (5) Library of Congress Subject Headings (LCSH); (6) authority control through LCSH; (7) subject searching through LC-based, assigned subject headings; and (8) other subject…
Descriptors: Cataloging, Classification, Indexing, Literature Reviews

Azubuike, Abraham A.; Umoh, Jackson S. – International Library Review, 1988
Describes the concept of maximum indexing, a system aimed at achieving maximum recall and maximum precision in computerized information retrieval. The indexing strategies used to achieve maximum indexing and the problems that arise are discussed. (9 references) (CLB)
Descriptors: Databases, Indexing, Information Retrieval, Online Systems

Rousseau, Ronald – Information Processing and Management, 1985
Presents a modification function for weights of descriptors for documents in fuzzy retrieval systems which includes some desirable properties that are lacking in the model proposed by Choros and Danilowicz in their study on relative indexing. (MBR)
Descriptors: Algorithms, Indexing, Information Retrieval, Online Systems

Humphrey, Suzanne; Miller, Nancy E. – Journal of the American Society for Information Science, 1987
Describes the National Library of Medicine's (NLM) Indexing Aid Project for conducting research in knowledge representation and indexing for information retrieval, whose goal is to develop interactive knowledge-based systems for computer-assisted indexing of the periodical medical literature. Appendices include background information on NLM…
Descriptors: Expert Systems, Indexing, Information Retrieval, Medicine

Kwok, K. L. – Information Processing and Management, 1988
Describes a method for enhancing the subject index terms of a document with title terms from cited, citing, and cocited documents. Experimental results of this methodology are presented, and responses to criticisms of this strategy are made. (40 references) (CLB)
Descriptors: Bibliographic Coupling, Citations (References), Cost Effectiveness, Indexing

Ghani, Abdul – International Library Review, 1987
Describes the uniterm system of coordinate indexing and examines its applicability to the indexing of Arabic literature. Unresolved problems in semantics, thesauri development, and standardization are identified and discussed. (CLB)
Descriptors: Arabic, Coordinate Indexes, Foreign Countries, Indexing

Fidel, Raya – Journal of Documentation, 1986
This study surveyed abstracting policies and guidelines used by producers of bibliographic databases that aim to enhance free-text retrieval. Results indicate editors consider content of abstracts and their language as primary factors in retrieval enhancement. Most recommend that concepts and form be coordinated with controlled vocabulary…
Descriptors: Abstracting, Abstracts, Check Lists, Guidelines

Nelson, Michael J.; Tague, Jean M. – Journal of the American Society for Information Science, 1985
Proposes split model for index term distribution in document set that uses rank function for high frequency terms and size function for low frequency terms; the point of transition is determined either empirically or by rule. Distributions to describe index term exhaustivity and term co-occurrence are considered briefly. (36 references) (EJS)
Descriptors: Databases, Indexing, Information Retrieval, Models

Shaw, W. M., Jr. – Information Processing and Management, 1986
Empirical significance of document partitions is investigated as a function of index term-weight and similarity thresholds. Results show the same empirically preferred partitions can be detected by two independent strategies: an analysis of cluster-based retrieval analysis and an analysis of regularities in the underlying structure of the document…
Descriptors: Automatic Indexing, Graphs, Information Retrieval, Relevance (Information Retrieval)

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