205 search results - page 20 / 41 » Join point selectors |
ICDE
2004
IEEE
14 years 11 months ago
2004
IEEE
Twig queries represent the building blocks of declarative query languages over XML data. A twig query describes a complex traversal of the document graph and generates a set of el...
GIS
2006
ACM
14 years 11 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...
BROADNETS
2007
IEEE
14 years 4 months ago
2007
IEEE
—Epidemic protocols assume that information of a random set of nodes is provided at each protocol round. By definition, the random set needs to be chosen uniformly and randomly ...
CVPR
2007
IEEE
14 years 12 months ago
2007
IEEE
The non-negativity of color signals implies that they span a conical space with a hyperbolic geometry. We use perspective projections to separate intensity from chromaticity, and ...
EDBT
2004
ACM
14 years 10 months ago
2004
ACM
Despite the existence of obstacles in many database applications, traditional spatial query processing utilizes the Euclidean distance metric assuming that points in space are dire...