205 search results - page 30 / 41 » Optimizing Multiple Top-K Queries over Joins |
ICDCS
2007
IEEE
13 years 11 months ago
2007
IEEE
This paper presents GeoGrid, a geographical location service overlay network system, for providing scalable location-based services to a large and growing number of mobile users. ...
SIGMOD
2006
ACM
14 years 7 months ago
2006
ACM
Text is ubiquitous and, not surprisingly, many important applications rely on textual data for a variety of tasks. As a notable example, information extraction applications derive...
STOC
2007
ACM
14 years 8 months ago
2007
ACM
Motivated by the capabilities of modern storage architectures, we consider the following generalization of the data stream model where the algorithm has sequential access to multi...
SIGMOD
2002
ACM
14 years 7 months ago
2002
ACM
This paper addresses the problem of evaluating ranked top-? queries with expensive predicates. As major DBMSs now all support expensive user-defined predicates for Boolean queries...
ICDE
2008
IEEE
14 years 2 months ago
2008
IEEE
— Skyline queries are capable of retrieving interesting points from a large data set according to multiple criteria. Most work on skyline queries so far has assumed a centralized...