777 search results - page 24 / 156 » Optimization of Relational Preference Queries |
PODS
2010
ACM
14 years 22 days ago
2010
ACM
Both semantic and type-based query optimization rely on the idea that queries often exhibit non-trivial rewritings if the state space of the database is restricted. Despite their ...
SIGMOD
2003
ACM
14 years 7 months ago
2003
ACM
In this paper, we study whether the need for efficient XML publishing brings any new requirements for relational query engines, or if sorting query results in the relational engin...
ICMCS
2006
IEEE
14 years 1 months ago
2006
IEEE
A visual query is based on pictorial representation of conceptual entities and operations. One of the most important features used in visual queries is the shape. Despite its intu...
ICDE
2006
IEEE
14 years 9 months ago
2006
IEEE
Given a set of multi-dimensional points, the skyline contains the best points according to any preference function that is monotone on all axes. In practice, applications that req...
ICDM
2008
IEEE
14 years 2 months ago
2008
IEEE
Selecting promising queries is the key to effective active learning. In this paper, we investigate selection techniques for the task of learning an equivalence relation where the ...