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Comparative Analysis2
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Information Retrieval2
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Journal of Documentation2
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Hancock-Beaulieu, Micheline1
Willett, Peter1
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Document Retrieval Experiments Using Indexing Vocabularies of Varying Size. II. Hashing, Truncation, Digram and Trigram Encoding of Index Terms.
Peer reviewed Peer reviewed
Willett, Peter – Journal of Documentation, 1979
Describes the use of fixed-length character strings for controlling the size of indexing vocabularies in information retrieval systems. An evaluation of digram and trigram encoding, using the Cranfield document test collection, is presented and the results are compared with the hashing and the right-hand truncation of the terms. (Author)
Descriptors: Comparative Analysis, Indexes, Information Retrieval, Online Systems
Evaluating the Impact of an Online Library Catalogue on Subject Searching Behaviour at the Catalogue and at the Shelves.
Peer reviewed Peer reviewed
Hancock-Beaulieu, Micheline – Journal of Documentation, 1990
Describes a study at the City University (London) that was conducted to evaluate the impact of an online catalog on subject searching behavior. Methods of using the catalog and browsing at the shelves are examined, and results are compared with an earlier study of subject searching with a manual PRECIS index. (25 references) (LRW)
Descriptors: Comparative Analysis, Foreign Countries, Higher Education, Indexes