902 search results - page 92 / 181 » Efficient and Extensible Algorithms for Multi Query Optimiza... |
159
Voted
DLOG
2006
15 years 4 months ago
2006
The novel context of accessing and querying large data repositories through ontologies that are formalized in terms of expressive DLs requires on the one hand to consider query an...
230
Voted
ICDE
2008
IEEE
16 years 3 months ago
2008
IEEE
Many applications require finding objects closest to a specified location that contains a set of keywords. For example, online yellow pages allow users to specify an address and a ...
210
Voted
GIS
2006
ACM
16 years 3 months ago
2006
ACM
Efficient evaluation of spatial queries is an important issue in spatial database. Among spatial operations, spatial join is very useful, intersection being the most common predic...
145
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EDBT
2002
ACM
16 years 2 months ago
2002
ACM
Abstract. Estimating the sizes of query results, and intermediate results, is crucial to many aspects of query processing. In particular, it is necessary for effective query optimi...
196
Voted
VLDB
2007
ACM
16 years 2 months ago
2007
ACM
Given a set of multidimensional data points, skyline query retrieves a set of data points that are not dominated by any other points. This query is useful for multi-preference ana...