785 search results - page 20 / 157 » Efficient Processing of Top-k Queries in Uncertain Databases |
PVLDB
2008
13 years 7 months ago
2008
In this paper we propose a novel document retrieval model in which text queries are augmented with multi-dimensional taxonomy restrictions. These restrictions may be relaxed at a ...
ICDE
1995
IEEE
14 years 9 months ago
1995
IEEE
?In a fuzzy relational database where a relation is a fuzzy set of tuples and ill-known data are represented by possibility distributions, nested fuzzy queries can be expressed in ...
VLDB
2002
ACM
13 years 7 months ago
2002
ACM
Our experimental analysis of several popular XPath processors reveals a striking fact: Query evaluation in each of the systems requires time exponential in the size of queries in ...
EDBT
2009
ACM
13 years 5 months ago
2009
ACM
In this work, we focus on managing scientific environmental data, which are measurement readings collected from wireless sensors. In environmental science applications, raw sensor...
ICDE
2009
IEEE
14 years 9 months ago
2009
IEEE
Requirements from new types of applications call for new database system solutions. Computational science applications performing distributed computations on Grid networks with req...