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- W114019344 abstract "The management of user preferences is becoming a fundamental ingredient of modern Web-based data-intensive applications, in which information filtering is crucial to reduce the volume of data presented to the user. However, though deriving and modeling user preferences has been largely studied in recent years, there is still a need for practical methods to efficiently incorporate preferences in actual systems. In this paper we consider the qualitative approach to user preferences in which a binary preference relation is defined among objects and a special operator (called Best) is used to extract relevant data according to the preference relation. In this framework, we propose and study a special index structure, called β-tree, which can be used for a rapid evaluation of the Best operator. We then present a number of practical algorithms for the efficient maintenance of β-trees in front of database updates and discuss some relevant implementation issues." @default.
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- W114019344 date "2003-01-01" @default.
- W114019344 modified "2023-09-26" @default.
- W114019344 title "Management of User Preferences in Data Intensive Applications." @default.
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