Flexible database querying based on associations of domain values
In this paper we present an approach to database querying based on fuzzy evaluation of queries. In the approach a dedicated mining for domain knowledge is involved. The result of this is a special kind of associations between values and is represented in fuzzy networks. Such a network is used to relax queries and to relate objects in the database. The network exploit the database, in the sense that it is obtained by pure statistical means from mining the database for associations between domain values. It is a special variant of a projection of, or a orthogonal view on, data in the database.
The approach described here has been implemented and applied in an experiment on a “real-world” library database. In this application associations are modeled between keywords used in librarians descriptions of books in the database. Examples and conclusions are partly based on the results of this experiment.
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