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| Automatic Indexing | 2 |
| Relevance (Information… | 2 |
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| Journal of Documentation | 3 |
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Peer reviewedBird, P. R. – Journal of Documentation, 1974
The indexing depth in several documentation systems is shown to have a mixed Poisson distribution. (PF)
Descriptors: Documentation, Indexing, Information Systems, Mathematical Models
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 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
