Sciweavers

2775 search results - page 475 / 555
» Differencing Data Streams
Sort
View
GIS
2006
ACM
15 years 10 months ago
Modeling and querying uncertain spatial information for situational awareness applications
Situational awareness (SA) applications monitor the real world and the entities therein to support tasks such as rapid decision-making, reasoning, and analysis. Raw input about un...
Dmitri V. Kalashnikov, Yiming Ma, Sharad Mehrotra,...
WWW
2009
ACM
15 years 10 months ago
Unsupervised query categorization using automatically-built concept graphs
Automatic categorization of user queries is an important component of general purpose (Web) search engines, particularly for triggering rich, query-specific content and sponsored ...
Eustache Diemert, Gilles Vandelle
CHES
2009
Springer
200views Cryptology» more  CHES 2009»
15 years 10 months ago
Accelerating AES with Vector Permute Instructions
We demonstrate new techniques to speed up the Rijndael (AES) block cipher using vector permute instructions. Because these techniques avoid data- and key-dependent branches and mem...
Mike Hamburg
PODS
2009
ACM
110views Database» more  PODS 2009»
15 years 10 months ago
Optimal tracking of distributed heavy hitters and quantiles
We consider the the problem of tracking heavy hitters and quantiles in the distributed streaming model. The heavy hitters and quantiles are two important statistics for characteri...
Ke Yi, Qin Zhang
PODS
2003
ACM
158views Database» more  PODS 2003»
15 years 10 months ago
Computing full disjunctions
Full disjunctions are an associative extension of the outerjoin operator to an arbitrary number of relations. Their main advantage is the ability to maximally combine data from di...
Yaron Kanza, Yehoshua Sagiv