Extending relational algebra to handle bipolarity

Authors:
Patrick Bosc;Olivier Pivert;Amine Mokhtari;Ludovic Liétard
Affiliations:
University of Rennes, Lannion - France;University of Rennes, Lannion - France;University of Rennes, Lannion - France;University of Rennes, Lannion - France
Venue:
Proceedings of the 2010 ACM Symposium on Applied Computing
Year:
2010

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Abstract

This paper presents an extension of relational algebra suited to the handling of bipolar concepts. The type of queries considered involves two parts: a first one which expresses a (possibly flexible) constraint, and a second one that corresponds to a (possibly flexible) wish. The framework considered is that of bipolar fuzzy relations where each tuple is associated with a pair of degrees in the unit interval.