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Salton, G.; And Others – 1974
In a document retrieval, or other pattern matching environment where stored entities (documents) are compared with each other, or with incoming patterns (search requests), it appears that the best indexing (property) space is one where each entity lies as far away from the others as possible; that is, retrieval performance correlates inversely…
Descriptors: Automatic Indexing, Information Retrieval, Information Science, Information Theory
Peer reviewed Peer reviewed
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
Peer reviewed Peer reviewed
Arents, Hans C.; Bogaerts, Walter F. L. – Information Processing and Management, 1993
Discusses and examines two approaches to concept-based retrieval of hypermedia information that improve a user's ability to navigate large systems--term indexing with semantically coupled thesauri and semantic hyperindexing. Visualization of index structures is discussed, and an example, the Cube of Contents retrieval model for the "Active…
Descriptors: Computer System Design, Hypermedia, Indexing, Information Retrieval
Salton, G.; And Others – 1974
Most existing automatic content analysis and indexing techniques are based on work frequency characteristics applied largely in an ad hoc manner. Contradictory requirements arise in this connection, in that terms exhibiting high occurrence frequencies in individual documents are often useful for high recall performance (to retrieve many relevant…
Descriptors: Automatic Indexing, Automation, Content Analysis, Discriminant Analysis
Peer reviewed Peer reviewed
Aboud, M.; And Others – Information Processing and Management, 1993
Presents an information systems navigation approach using a combination of functionalities encountered in classification processes, Hypertext systems, and information retrieval systems. The first version of the SYRIUS system is described, with emphasis on the user's graphic interface which integrates these functionalities. (26 references) (EA)
Descriptors: Classification, Computer Graphics, Computer System Design, Hypermedia
Peer reviewed Peer reviewed
Ma, Wei-Ying; Manjunath, B. S. – Journal of the American Society for Information Science, 1998
Presents a texture-based image-retrieval system for browsing large-scale aerial photographs. System components include texture-feature extraction, image segmentation and grouping, learning-similarity measure, and a texture-thesaurus model for fast search and indexing. Testing has demonstrated the system's effectiveness in searching and selecting…
Descriptors: Computer Software Evaluation, Geography, Indexing, Information Retrieval
Geisselmann, Friedrich – 2000
This paper begins with some general remarks about the indexing of electronic publications. Characteristics of today's information world are highlighted, including decentralization, distributed data collections, and heterogeneous data structures and indexing procedures. Three possible models for managing access to information are summarized: a…
Descriptors: Academic Libraries, Access to Information, Classification, Decentralization
Peer reviewed Peer reviewed
Silva, Wagner Teixeira da; Milidiu, Ruy Luiz – Journal of the American Society for Information Science, 1993
Describes the Belief Function Model for automatic indexing and ranking of documents which is based on a controlled vocabulary and on term frequencies in each document. Belief Function Theory is explained, and the Belief Function Model is compared to the Standard Vector Space Model. (17 references) (LRW)
Descriptors: Automatic Indexing, Comparative Analysis, Documentation, Information Retrieval
Peer reviewed Peer reviewed
Lopez-Huertas, Maria J. – Journal of Documentation, 1997
Explores creating a thesaurus from a cognitive viewpoint, based on a system that organizes its knowledge representation/classification according to the authors' and users' images of the subject domain, in order to increase user-text interaction. Discusses the general framework, methods for implementing author-text structures, and an approach…
Descriptors: Classification, Cognitive Structures, Discourse Modes, Indexing
Peer reviewed Peer reviewed
Bates, Marcia J. – Journal of the American Society for Information Science, 1986
Presents a model for the design of online catalog subject access based on three principles: the uncertainty of subject indexing, the need for greater variety in searcher's queries, and the complexity of the search process. The proposed system is based on existing Library of Congress subject cataloging. (EM)
Descriptors: Access to Information, Indexing, Models, Online Catalogs
Hines, Theodore C. – 1968
Problems in indexing library and information science literature occur because of the speed of introduction of new terms, the nature of class headings, and the uncertain terminology of the field. Vocabulary control requires control over the concepts selected (the depth of indexing), the form of expression of concepts and the syndetic apparatus of…
Descriptors: Cataloging, Citation Indexes, Classification, Conferences
DECROW, ROGER; AND OTHERS – 1967
RESULTS ARE REPORTED OF A STUDY OF THE FEASIBILITY OF A NATIONAL ADULT EDUCATION INFORMATION CENTER, IN WHICH IT WAS PROPOSED TO (1) STUDY INFORMATION PROBLEMS AND RESOURCES IN ADULT EDUCATION AND RECOMMEND NEW SERVICES WHICH WOULD BE MOST USEFUL TO THE FIELD , (2) DEVELOP THE TOOLS OF SUBJECT ANALYSIS WHICH WOULD BE NEEDED IN THESE SERVICES, AND…
Descriptors: Abstracting, Adult Education, Annotated Bibliographies, Automation