481 search results - page 91 / 97 » Approximate XML Query Answers |
CIKM
1999
Springer
13 years 12 months ago
1999
Springer
On-line analytical processing (OLAP) requires e cient processing of complex decision support queries over very large databases. It is well accepted that pre-computed data cubes ca...
ICDE
2005
IEEE
14 years 9 months ago
2005
IEEE
Efficient one-pass computation of F0, the number of distinct elements in a data stream, is a fundamental problem arising in various contexts in databases and networking. We consid...
ICDE
2003
IEEE
14 years 9 months ago
2003
IEEE
We are interested in capturing time series generated by small wireless electronic sensors. Battery-operated sensors must avoid heavy use of their wireless radio which is a key cau...
GIS
2007
ACM
14 years 8 months ago
2007
ACM
Many Geographic Information System (GIS) applications must handle large geospatial datasets stored in raster representation. Spatial joins over raster data are important queries i...
VLDB
2007
ACM
14 years 8 months ago
2007
ACM
We present STAR, a self-tuning algorithm that adaptively sets numeric precision constraints to accurately and efficiently answer continuous aggregate queries over distributed data...