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SIGMOD
2010
ACM
173views Database» more  SIGMOD 2010»
14 years 8 days ago
PR-join: a non-blocking join achieving higher early result rate with statistical guarantees
Online aggregation is a promising solution to achieving fast early responses for interactive ad-hoc queries that compute aggregates on a large amount of data. Essential to the suc...
Shimin Chen, Phillip B. Gibbons, Suman Nath
PERCOM
2004
ACM
14 years 7 months ago
Dynamic Federation of Partitioned Applications in Ubiquitous Computing Environments
A framework for the dynamic aggregation of ubiquitous computers is presented. The framework aggregates applications from more than one mobile component that can migrate from compu...
Ichiro Satoh
COR
2008
112views more  COR 2008»
13 years 7 months ago
Bi-dynamic constraint aggregation and subproblem reduction
Dynamic constraint aggregation was recently introduced by Elhallaoui et al. [Dynamic aggregation of set partitioning constraints in column generation. Operations Research 2005; 53...
Issmail Elhallaoui, Guy Desaulniers, Abdelmoutalib...
ICTCS
2005
Springer
14 years 29 days ago
Improved Algorithms for Polynomial-Time Decay and Time-Decay with Additive Error
Abstract. We consider the problem of maintaining polynomial and exponential decay aggregates of a data stream, where the weight of values seen from the stream diminishes as time el...
Tsvi Kopelowitz, Ely Porat
DAWAK
2000
Springer
13 years 11 months ago
Applying Vertical Fragmentation Techniques in Logical Design of Multidimensional Databases
In the context of multidimensional databases implemented on relational DBMSs through star schemes, the most effective technique to enhance performances consists of materializing re...
Matteo Golfarelli, Dario Maio, Stefano Rizzi