Sciweavers

316 search results - page 49 / 64
» Top-K aggregation queries over large networks
Sort
View
PVLDB
2008
116views more  PVLDB 2008»
14 years 9 months ago
Tighter estimation using bottom k sketches
Summaries of massive data sets support approximate query processing over the original data. A basic aggregate over a set of records is the weight of subpopulations specified as a ...
Edith Cohen, Haim Kaplan
ISCC
2009
IEEE
159views Communications» more  ISCC 2009»
15 years 4 months ago
Synchronous ultra-wide band wireless sensors networks for oil and gas exploration
Abstract— The fluctuations of the price of crude oil is pushing the oil companies to increase the investments in seismic exploration of new oil and gas reservoir. Seismic explor...
Stefano Savazzi, Umberto Spagnolini
PVLDB
2008
205views more  PVLDB 2008»
14 years 9 months ago
Making SENSE: socially enhanced search and exploration
Online communities like Flickr, del.icio.us and YouTube have established themselves as very popular and powerful services for publishing and searching contents, but also for ident...
Tom Crecelius, Mouna Kacimi, Sebastian Michel, Tho...
RTSS
2006
IEEE
15 years 3 months ago
Prediction-Based QoS Management for Real-Time Data Streams
With the emergence of large wired and wireless sensor networks, many real-time applications need to operate on continuous unbounded data streams. At the same time, many of these s...
Yuan Wei, Vibha Prasad, Sang Hyuk Son, John A. Sta...
SIGMOD
2005
ACM
220views Database» more  SIGMOD 2005»
15 years 10 months ago
Sampling Algorithms in a Stream Operator
Complex queries over high speed data streams often need to rely on approximations to keep up with their input. The research community has developed a rich literature on approximat...
Theodore Johnson, S. Muthukrishnan, Irina Rozenbau...