Sept. 4, 2006 to Sept. 8, 2006
Slawomir Zadrozny , Polish Academy of Sciences, Poland
Janusz Kacprzyk , Polish Academy of Sciences, Poland
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/DEXA.2006.36
The concepts of bipolar queries and queries with preferences are studied. Various interpretations of the former, recently defined by Dubois and Prade, are discussed. The latter were defined by Chomicki together with a new relational algebra operator winnow. The fuzzy version of the winnow operator is proposed. It is shown how it may be used to express a selected interpretation of the bipolar queries.
Slawomir Zadrozny, Janusz Kacprzyk, "Bipolar Queries and Queries with Preferences (Invited Paper)", DEXA, 2006, 2012 23rd International Workshop on Database and Expert Systems Applications, 2012 23rd International Workshop on Database and Expert Systems Applications 2006, pp. 415-419, doi:10.1109/DEXA.2006.36