Descriptor
| Indexing | 3 |
| Information Retrieval | 3 |
| Search Strategies | 3 |
| Relevance (Information… | 2 |
| Automatic Indexing | 1 |
| Automation | 1 |
| Classification | 1 |
| Information Storage | 1 |
| Keywords | 1 |
| Mathematical Models | 1 |
| Subject Index Terms | 1 |
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| Information Storage and… | 3 |
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Sparck Jones, Karen – Information Storage and Retrieval, 1973
The logic of different types of weighting are discussed, and experiments testing weighting schemes of these types are described. The results show that one type of weighting leads to material performance improvements in quite different collection environments. (22 references) (Author)
Descriptors: Automatic Indexing, Classification, Indexing, Information Retrieval
Tell, Bjorn V. – Information Storage and Retrieval, 1971
Three experiments were made by a flexible machine search system to test the retrieval efficiency of searching free text and keywords. Results based upon relevance judgements of users indicate that titles and abstracts are good index material which can be used for machine searching without human indexing. (Author/SJ)
Descriptors: Automation, Indexing, Information Retrieval, Keywords
De Heer, T. – Information Storage and Retrieval, 1974
Use of syntactic trace as an access strategy for large files containing arbitrary languages for which thesaurus-based and multiple attribute search techniques are unsuitable. (LS)
Descriptors: Indexing, Information Retrieval, Information Storage, Mathematical Models
