Abstract

Flexible querying and fuzzy querying of regular databases have been highly discussed topics in database literature for many years. The main goal is to allow the user to express his/her query in a more flexible way, thereby retrieving more human consistent results for the query. Ranking of these results is also an important issue in flexible and fuzzy querying. Users must be able to identify the results which are best suited for him/her, according to the query he/she formulated. In this paper, ranking results of the special case of bipolar querying will be dealt with, within a framework of bipolar satisfaction degrees, where, besides a satisfaction degree, also an independent dissatisfaction degree is used, which makes that the ranking cannot be solved in a linear way, i.e., final ranking is influenced by both independent degrees.

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