Abstract
In the paper we present a new operation called fuzzy projection that extends flexible querying languages. It consists in fuzzification of tuples for all linguistic variables defined on domains of attributes specified in a query. In result, tuples with linguistic variables, instead of original values, are displayed. On the basis of fuzzy projection a specific fuzzy group-by operation is introduced. These two operations are implemented as a part of SQLf_j language based on SQLf introduced by Bosc and Pivert. © Springer-Verlag Berlin Heidelberg 2005.
Cite
CITATION STYLE
Dembczyński, K., Hapke, M., & Przybył, D. (2005). Flexible querying with fuzzy projection. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 3528 LNAI, pp. 120–125). Springer Verlag. https://doi.org/10.1007/11495772_20
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