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| Algorithms | 3 |
| Information Retrieval | 3 |
| Automatic Indexing | 2 |
| Classification | 2 |
| Bibliographies | 1 |
| Citations (References) | 1 |
| Cluster Grouping | 1 |
| Computer Programs | 1 |
| Information Storage | 1 |
| Matrices | 1 |
| Word Frequency | 1 |
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| Information Storage and… | 3 |
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Yu, Clement T. – Information Storage and Retrieval, 1974
Heuristic methods for the construction of term classes are presented and experimental results are obtained to illustrate the usefulness of the method. (Author/PF)
Descriptors: Algorithms, Automatic Indexing, Classification, Cluster Grouping
Bichteler, Julie; Parsons, Ronald G. – Information Storage and Retrieval, 1974
An automatic classification technique using patterns formed by citations in document bibliographies was found to give 62 percent precision and 45 percent recall in a sample file of physics documents. (PF)
Descriptors: Algorithms, Automatic Indexing, Bibliographies, Citations (References)
Schuegraf, E. J. – Information Storage and Retrieval, 1973
The design of programs to search large document data bases is discussed with regard to the use of compression coding combined with adoption of word fragments as the basic language elements. An algorithm is described for determination of a set of almost equifrequent fragments. Its efficiency is tested. (23 references) (Author)
Descriptors: Algorithms, Computer Programs, Information Retrieval, Information Storage
