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| Automatic Indexing | 8 |
| Information Retrieval | 7 |
| Relevance (Information… | 6 |
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| Mathematical Models | 2 |
| Syntax | 2 |
| Algorithms | 1 |
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| Journal of Documentation | 8 |
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| Biru, Tesfaye | 1 |
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| Green, Rebecca | 1 |
| Harding, P. | 1 |
| Jones, K. Sparck | 1 |
| Rada, Roy | 1 |
| Robertson, S. E. | 1 |
| Sparck Jones, K. | 1 |
| Sparck Jones, Karen | 1 |
| Tait, J. I. | 1 |
| Van Rijsbergen, C. J. | 1 |
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Peer reviewedRobertson, S. E.; Harding, P. – Journal of Documentation, 1984
Presents adaptation of a probabilistic theoretical model previously used in relevance feedback for use in automatic indexing of documents (in the sense of imitating) human indexers. Methods for model application are proposed, independence assumptions used in the model are interpreted, and the probability of a dependence model is discussed.…
Descriptors: Automatic Indexing, Classification, Information Retrieval, Mathematical Models
Peer reviewedBurnett, John E.; And Others – Journal of Documentation, 1979
Analyzes a study of the effect of controlled variations in indexing vocabulary size on retrieval performance, using the Cranfield 200 and 1400 test collections. Sets of variable-length character strings were tested, in an application of the Cluster Hypothesis and in a series of linear associative retrieval experiments. (Author/SW)
Descriptors: Automatic Indexing, Evaluation Methods, Indexes, Indexing
Peer reviewedJones, K. Sparck; Tait, J. I. – Journal of Documentation, 1984
Describes research designed to improve automatic pre-coordinate term indexing by applying language analysis techniques to identify term sources in requests, and to generate variant expressions of concepts involved for document text searching. Text analysis, term extraction, variant generation, and retrieval trial are highlighted. Thirteen…
Descriptors: Automatic Indexing, Information Retrieval, Online Systems, Relevance (Information Retrieval)
Peer reviewedSparck Jones, K.; Van Rijsbergen, C. J. – Journal of Documentation, 1973
Substantial alterations to a system often have little or no effect on particular collections. This may be due to poor separation of relevant and non-relevant documents. The paper presents a procedure for characterizing this separation, which can show whether proposed modifications of the base system are likely to be useful. (8 references)…
Descriptors: Automatic Indexing, Classification, Cluster Analysis, Databases
Peer reviewedGreen, Rebecca – Journal of Documentation, 1995
Presents criteria for an effective syntagmatic relator system and describes how conceptual syntagmatic relationships are expressed in natural language, commenting on the adequacy of such expressions for document retrieval systems. Only one type of expression, a gestalt structure, represented as a frame, conforms to the criteria. (Author/JKP)
Descriptors: Automatic Indexing, Comparative Analysis, Documentation, Indexing
Peer reviewedBiru, Tesfaye; And Others – Journal of Documentation, 1989
Discusses the effect of including relevance data on the calculation of term discrimination values in bibliographic databases. Algorithms that calculate the ability of index terms to discriminate between relevant and non-relevant documents are described and tested. The results are discussed in terms of the relationship between term frequency and…
Descriptors: Algorithms, Automatic Indexing, Bibliographic Databases, Mathematical Models
Peer reviewedRada, Roy; You, Geeng-Neng – Journal of Documentation, 1992
Discusses the use of document outlines to reduce navigation problems in hypertext. Measures of syntactic and lexical balance in an outline are proposed, and the degree to which these balances occur in a sample of documents is shown. Based on balance in an outline, a method for semiautomatically generating an outline is applied to a textbook. (45…
Descriptors: Automatic Indexing, Discourse Analysis, Hypermedia, Information Retrieval
Peer reviewedSparck Jones, Karen – Journal of Documentation, 1974
Reviews the state of the art in automatic indexing, concentrating on the literature from 1968 to 1973. (Author/PF)
Descriptors: Automatic Indexing, Classification, Indexing, Information Retrieval
