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- W2272178012 abstract "This article considers the bipolar approach to define database queries expressing users’ preferences (flexible queries). An algebraic framework for the definition of flexible queries of relational databases using fuzzy bipolar conditions of type and-if-possible and or-else has been considered. This paper defines some qualitative calibrations of such queries to specify a minimal quality of answers and to reduce their number. Different operators (extended (alpha )-cuts) are defined and studied in this article. They can apply on the set of answers to express a qualitative calibrations of bipolar fuzzy queries. Some properties of these extended (alpha )-cuts are pointed out and some of their applications for query evaluation are shown." @default.
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- W2272178012 date "2015-01-01" @default.
- W2272178012 modified "2023-09-23" @default.
- W2272178012 title "On the Qualitative Calibration of Bipolar Queries" @default.
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- W2272178012 doi "https://doi.org/10.1007/978-3-319-25252-0_10" @default.
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