373 search results - page 45 / 75 » Querying Priced Information in Databases: The Conjunctive Ca... |
SIGMOD
2002
ACM
15 years 9 months ago
2002
ACM
Statistics play an important role in influencing the plans produced by a query optimizer. Traditionally, optimizers use statistics built over base tables and assume independence b...
64
Voted
CIKM
2009
Springer
15 years 4 months ago
2009
Springer
Many users need to refer to content in existing files (pictures, tables, emails, web pages and etc.) when they write documents(programs, presentations, proposals and etc.), and o...
87
Voted
EDBT
2004
ACM
15 years 9 months ago
2004
ACM
Peer-to-peer (P2P) systems are gaining increasing popularity as a scalable means to share data among a large number of autonomous nodes. In this paper, we consider the case in whic...
112
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PODS
1998
ACM
15 years 1 months ago
1998
ACM
We consider the problem of estimating CPU (distance computations) and I/O costs for processing range and k-nearest neighbors queries over metric spaces. Unlike the specific case ...
142
Voted
GIS
2006
ACM
15 years 10 months ago
2006
ACM
In the real world, lots of objects with changing position can be found. Some of them repeat the same movement several times, called periodic movements. Examples include airplanes,...