176 search results - page 17 / 36 » Answering aggregate queries in data exchange |
ICDT
2010
ACM
14 years 7 months ago
2010
ACM
Sources of data uncertainty and imprecision are numerous. A way to handle this uncertainty is to associate probabilistic annotations to data. Many such probabilistic database mode...
DLOG
2008
14 years 4 days ago
2008
Answering queries posed over knowledge bases is a central problem in knowledge representation and database theory. In databases, query containment is one of the important query op...
CORR
2010
Springer
13 years 10 months ago
2010
Springer
: - In this paper we present several novel efficient techniques and multidimensional data structures which can improve the decision making process in many domains. We consider onli...
ISI
2002
Springer
13 years 9 months ago
2002
Springer
Dealing with large volumes of data, OLAP data cubes aggregated values are often spoiled by errors due to missing values in detailed data. This paper suggests to adjust aggregate an...
COMAD
2008
13 years 11 months ago
2008
Answering aggregate queries like sum, count, min, max over regions containing moving objects is often needed for virtual world applications, real-time monitoring systems, etc. Sin...