25 search results - page 4 / 5 » Data Structures for Range-Aggregate Extent Queries |
CIKM
2009
Springer
13 years 8 months ago
2009
Springer
While provenance has been extensively studied in the literature, the efficient evaluation of provenance queries remains an open problem. Traditional query optimization techniques...
ICDE
2008
IEEE
14 years 6 months ago
2008
IEEE
Probabilistic data have recently become popular in applications such as scientific and geospatial databases. For images and other spatial datasets, probabilistic values can capture...
JCSS
2000
13 years 4 months ago
2000
We investigate a class of path constraints that is of interest in connection with both semistructured and structured data. In standard database systems, constraints are typically ...
GIS
2006
ACM
14 years 6 months ago
2006
ACM
If you were told that some object A was perfectly (or somewhat, or not at all) in some direction (e.g., west, above-right) of some reference object B, where in space would you loo...
APWEB
2007
Springer
13 years 9 months ago
2007
Springer
Abstract. XML provides a natural mechanism for representing semistructured and unstructured data. It becomes the basis for encoding a large variety of information, for example, the...