3368 search results - page 85 / 674 » The Complexity of Query Reliability |
ICDE
2008
IEEE
14 years 3 months ago
2008
IEEE
We formulate three intuitive semantic properties for topk queries in probabilistic databases, and propose GlobalTopk query semantics which satisfies all of them. We provide a dyn...
DAGSTUHL
2003
13 years 10 months ago
2003
In this chapter, we summarize the research on querying inconsistent databases we have been conducting over the last five years. The formal framework we have used is based on two c...
VLDB
2002
ACM
13 years 8 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 ...
CORR
2010
Springer
13 years 6 months ago
2010
Springer
Abstract. CAT(0) metric spaces constitute a far-reaching common generalization of Euclidean and hyperbolic spaces and simple polygons: any two points x and y of a CAT(0) metric spa...
WAIM
2010
Springer
13 years 7 months ago
2010
Springer
Materialized views which are derived from base relations and stored in the database are often used to speed up query processing. In this paper, we leverage them in a traceable peer...