Document (#3118)

Author

Latham, S.J.

Title

Beyond Boolean logic : probabilistic approaches to text retrieval

Source

Law librarian. 22(1991) no.3, S.157-163

Year

1991

Abstract

Text retrieval systems in use today are predominantly based on Boolean techniques. Search statements consisting of search terms and Boolean operators are matches against an inverted file to retrieve a set of records for full display. This approach to text retrieval has a number of limitations which may be overcome by presenting a set of documents ranked in order of their degree of similarity to the search statement. Such probabilistic techniques have not yet been incorporated into commercially available products on a large scale. This is due to inertia among users and producers and results from the nature of the market for text retrieval systems. Probabilistic techniques are likely to play an increasingly important part in text retrieval systems in the future

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