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Craven, Timothy C. – Journal of the American Society for Information Science, 1982
Describes a system for the automatic coding of most descriptive titles which generates Nested Phrase Indexing System (NEPHIS) input strings of sufficient quality for permuted index production. A series of examples and an 11-item reference list accompany the text. (JL)
Descriptors: Algorithms, Automatic Indexing, Permuted Indexes
Peer reviewed Peer reviewed
Craven, Timothy C. – Journal of the American Society for Information Science, 1980
Proposes that error rates in indexing using string index languages such as NEPHIS might be reduced at relatively low cost by having the indexer enter strings via a microcomputer system which could provide simple validation and feedback in the form of graphic displays of concept links. (Author/FM)
Descriptors: Algorithms, Automatic Indexing, Computer Graphics, Microcomputers
Peer reviewed Peer reviewed
Persin, Michael; And Others – Journal of the American Society for Information Science, 1996
Discusses ranking techniques for document retrieval and proposes an evaluation, or filtering, technique that reduces costs and memory usage by early recognition of which documents are likely to be highly ranked. Highlights include index design, ranked query evaluation, reducing the number of accumulators, inverted file structures, and experimental…
Descriptors: Algorithms, Computer Storage Devices, Costs, Evaluation Methods
Peer reviewed Peer reviewed
Gluck, Myke – Journal of the American Society for Information Science, 1990
Examines the definition of journal coverage overlap in abstracting and indexing services during the past 30 years of research and expands the definition using a matrix of dissimilarity values. Multidimensional scaling analysis is applied to graphically demonstrate this definition and a naive secondary tool selection algorithm is presented. (43…
Descriptors: Algorithms, Citation Analysis, Data Collection, Factor Analysis