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2000
ACM
15 years 1 months ago
Parallel Smoothed Aggregation Multigrid: Aggregation Strategies on Massively Parallel Machines
Algebraic multigrid methods offer the hope that multigrid convergence can be achieved (for at least some important applications) without a great deal of effort from engineers an...
Ray S. Tuminaro, Charles Tong
SIGMOD
2004
ACM
148views Database» more  SIGMOD 2004»
15 years 9 months ago
Vertical and Horizontal Percentage Aggregations
Existing SQL aggregate functions present important limitations to compute percentages. This article proposes two SQL aggregate functions to compute percentages addressing such lim...
Carlos Ordonez
PERCOM
2006
ACM
15 years 9 months ago
Resilient Aggregation with Attack Detection in Sensor Networks
In this paper, we propose a new model of resilient data aggregation in sensor networks, where the aggregator analyzes the received sensor readings and tries to detect unexpected d...
Levente Buttyán, Péter Schaffer, Ist...
EUROMICRO
2004
IEEE
15 years 1 months ago
Determination of Aggregation Points in Wireless Sensor Networks
A primary goal in the design of wireless sensor networks is lifetime maximization, constrained by the energy capacity of batteries. One well known method to reduce energy consumpt...
Utz Roedig, André M. Barroso, Cormac J. Sre...
EUSFLAT
2001
14 years 10 months ago
A geometric approach to aggregation
In analogy to the representation of the standard probabilistic average as an expected value of a random variable, a geometric approach to aggregation is proposed. Several properti...
Erich-Peter Klement, Radko Mesiar, Endre Pap