104 search results - page 21 / 21 » Index structures and algorithms for querying distributed RDF... |
GIS
2002
ACM
13 years 4 months ago
2002
ACM
A very important class of queries in GIS applications is the class of K-Nearest Neighbor queries. Most of the current studies on the K-Nearest Neighbor queries utilize spatial ind...
SIGMOD
2009
ACM
14 years 5 months ago
2009
ACM
We consider the problem of collectively approximating a set of sensor signals using the least amount of space so that any individual signal can be efficiently reconstructed within...
WEBDB
2004
Springer
13 years 10 months ago
2004
Springer
The increasing importance of search engines to commercial web sites has given rise to a phenomenon we call “web spam”, that is, web pages that exist only to mislead search eng...
EDBT
2008
ACM
14 years 5 months ago
2008
ACM
Peer Data Management Systems (PDMSs) have been introduced as a solution to the problem of large-scale sharing of semantically rich data. A PDMS consists of semantic peers connecte...