Bipolar Queries: An Approach and its Various Interpretations

Abstract — The concept of a bipolar query is studied in the frame-work of the flexible fuzzy querying of databases. The focus is on the aggregation of the negative and positive conditions forming a bipolar query. Three formal logical representations of such an aggregation are proposed and analyzed taking into account various possible in-terpretations of fuzzy logical connectives. The relation to other ap-proaches known in the literature is shown