A flexible bipolar querying approach with imprecise data and guaranteed results
نویسندگان
چکیده
منابع مشابه
A flexible bipolar querying approach with imprecise data and guaranteed results
In this paper, we propose an approach to query a database when the user preferences are bipolar (i.e., express both constraints and wishes about the desired result) and the data stored in the database are imprecise. Results are then completely ordered with respect to these bipolar preferences, giving priority to constraints over wishes. Additionally, we propose a treatment that allows us to gua...
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In this paper, we propose an approach to query a database where the user preferences can be bipolar (i.e., express both constraints and wishes about the desired result) and the data stored in the database can be uncertain. Query results are then completely ordered with respect to these bipolar preferences, giving priority to constraints over wishes. Furthermore, we consider user preferences exp...
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Flexible querying of information systems allows expressing complex preferences in user queries. Such preferences can be modeled by fuzzy bipolar conditions which are made of constraints c and wishes w and interpreted as ”to satisfy c and if possible to satisfy w”.We define in this article the main elements of the Bipolar SQLf language, which is an SQL-like querying language based on a bipolar r...
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ژورنال
عنوان ژورنال: Fuzzy Sets and Systems
سال: 2011
ISSN: 0165-0114
DOI: 10.1016/j.fss.2010.12.014