Sciweavers

2662 search results - page 461 / 533
» Data Compression Support in Databases
Sort
View
DEBU
2000
101views more  DEBU 2000»
15 years 2 months ago
Learning to Understand the Web
In a traditional information retrieval system, it is assumed that queries can be posed about any topic. In reality, a large fraction of web queries are posed about a relatively sm...
William W. Cohen, Andrew McCallum, Dallan Quass
SIGMOD
2002
ACM
137views Database» more  SIGMOD 2002»
15 years 2 months ago
Partial results for online query processing
Traditional query processors generate full, accurate query results, either in batch or in pipelined fashion. We argue that this strict model is too rigid for exploratory queries o...
Vijayshankar Raman, Joseph M. Hellerstein
ADC
2010
Springer
266views Database» more  ADC 2010»
14 years 9 months ago
Counting distinct objects over sliding windows
Aggregation against distinct objects has been involved in many real applications with the presence of duplicates, including real-time monitoring moving objects. In this paper, we ...
Wenjie Zhang, Ying Zhang, Muhammad Aamir Cheema, X...
ICASSP
2011
IEEE
14 years 6 months ago
Fast estimation of the state of the power grid using synchronized phasor measurements
—Both the communication limitation and the measurement properties based algorithm become the bottleneck of enhancing the traditional power system state estimation speed. The avai...
Tao Yang, Anjan Bose
150
Voted
ICDE
2011
IEEE
274views Database» more  ICDE 2011»
14 years 6 months ago
SQPR: Stream query planning with reuse
—When users submit new queries to a distributed stream processing system (DSPS), a query planner must allocate physical resources, such as CPU cores, memory and network bandwidth...
Evangelia Kalyvianaki, Wolfram Wiesemann, Quang Hi...