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EnglishWe consider the problem of sufficiently answer preference queries when access to the database is through a set of ranked lists and preferences define a strict partial order over the database objects. The iMPO-1 algorithm we introduce minimizes the number of database accesses and can also incrementally return objects as soon as they are guaranteed to be part of the result. As such it generalizes known techniques developed for specific cases, such as Skyline queries
| Titolo: | Optimal Incremental Evaluation of Preference Queries Based on Ranked Sub-queries |
| Autore/i: | BARTOLINI, ILARIA; CIACCIA, PAOLO |
| Autore/i Unibo: | |
| Anno: | 2005 |
| Titolo del libro: | Proceedings of the 13th Italian Symposium on Adanced Database Systems (SEBD 2005) |
| Pagina iniziale: | 308 |
| Pagina finale: | 315 |
| Abstract: | We consider the problem of sufficiently answer preference queries when access to the database is through a set of ranked lists and preferences define a strict partial order over the database objects. The iMPO-1 algorithm we introduce minimizes the number of database accesses and can also incrementally return objects as soon as they are guaranteed to be part of the result. As such it generalizes known techniques developed for specific cases, such as Skyline queries |
| Data prodotto definitivo in UGOV: | 11-ott-2005 |
| Appare nelle tipologie: | 4.01 Contributo in Atti di convegno |
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