1283 search results - page 14 / 257 » Probabilistic structured query methods |
VLDB
2005
ACM
14 years 2 months ago
2005
ACM
In an “uncertain database”, an object o is associated with a multi-dimensional probability density function (pdf), which describes the likelihood that o appears at each positi...
WWW
2006
ACM
14 years 9 months ago
2006
ACM
Structural summaries are data structures that preserve all structural features of XML documents in a compact form. We investigate the applicability of the most popular summaries a...
SIGMOD
2008
ACM
14 years 8 months ago
2008
ACM
Uncertain data is inherent in a few important applications such as environmental surveillance and mobile object tracking. Top-k queries (also known as ranking queries) are often n...
EDBT
2009
ACM
13 years 12 months ago
2009
ACM
Range queries for querying the current and future positions of the moving objects have received growing interests in the research community. Existing methods, however, assume that...
APPT
2005
Springer
13 years 10 months ago
2005
Springer
It is difficult to maintain the exact location of mobile objects due to the limited resources in a mobile network. A consequence of this problem is that the update cost for a locat...