Abstract
In this paper, we present a cooperative approach intended to avoid empty answers to conjunctive fuzzy relational queries. We propose a weakening mechanism generating more tolerant queries. This consists in relaxing one or several fuzzy predicates with the help of a fuzzy linguistic modifier which is used to build a lattice of weakened queries expressing a semantic distance between these queries. Selectivity is then used as a heuristic to guide through the lattice, in order to find the query with a non-empty answer which is as close as possible to the initial one.
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© 1994 Springer-Verlag Berlin Heidelberg
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Andreasen, T., Pivert, O. (1994). On the weakening of fuzzy relational queries. In: Raś, Z.W., Zemankova, M. (eds) Methodologies for Intelligent Systems. ISMIS 1994. Lecture Notes in Computer Science, vol 869. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-58495-1_15
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DOI: https://doi.org/10.1007/3-540-58495-1_15
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