237 search results - page 30 / 48 » Efficient Query Processing on the Relational Quadtree |
PVLDB
2008
13 years 7 months ago
2008
The popularity of collaborative tagging sites presents a unique opportunity to explore keyword search in a context where query results are determined by the opinion of a network o...
ICDE
1999
IEEE
14 years 9 months ago
1999
IEEE
We develop a data integration approach for the efficient evaluation of queries over autonomous source databases. The approach is based on some novel applications and extensions of...
SIGIR
2010
ACM
13 years 8 months ago
2010
ACM
We present a novel approach to query reformulation which combines syntactic and semantic information by means of generalized Levenshtein distance algorithms where the substitution...
GIS
2007
ACM
14 years 9 months ago
2007
ACM
Continuous spatial queries posted within an environment of moving objects produce as their results a time-varying set of objects. In the most ambitious case both queries and data ...
SIGMOD
2005
ACM
14 years 8 months ago
2005
ACM
Peer-to-peer (p2p) systems are attracting increasing attention as an efficient means of sharing data among large, diverse and dynamic sets of users. The widespread use of XML as a...