Sciweavers

9414 search results - page 319 / 1883
» Adaptive Query Processing
Sort
View
MOBIQUITOUS
2007
IEEE
15 years 10 months ago
A SpatioTemporal Placement Model for Caching Location Dependent Queries
Client side caching of location dependent queries is an important technique for improving performance of location-based services. Most of the existing research in this area has fo...
Anand Murugappan, Ling Liu
SIGMOD
2006
ACM
121views Database» more  SIGMOD 2006»
15 years 10 months ago
Derby/S: a DBMS for sample-based query answering
Although approximate query processing is a prominent way to cope with the requirements of data analysis applications, current database systems do not provide integrated and compre...
Anja Klein, Rainer Gemulla, Philipp Rösch, Wo...
ICDT
2001
ACM
116views Database» more  ICDT 2001»
15 years 8 months ago
On Optimizing Nearest Neighbor Queries in High-Dimensional Data Spaces
Abstract. Nearest-neighbor queries in high-dimensional space are of high importance in various applications, especially in content-based indexing of multimedia data. For an optimiz...
Stefan Berchtold, Christian Böhm, Daniel A. K...
DASFAA
2009
IEEE
173views Database» more  DASFAA 2009»
15 years 7 months ago
A Uniform Framework for Ad-Hoc Indexes to Answer Reachability Queries on Large Graphs
Graph-structured databases and related problems such as reachability query processing have been increasingly relevant to many applications such as XML databases, biological databas...
Linhong Zhu, Byron Choi, Bingsheng He, Jeffrey Xu ...
ICDE
2002
IEEE
147views Database» more  ICDE 2002»
16 years 5 months ago
Decoupled Query Optimization for Federated Database Systems
We study the problem of query optimization in federated relational database systems. The nature of federated databases explicitly decouples many aspects of the optimization proces...
Amol Deshpande, Joseph M. Hellerstein