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EDBT
2012
ACM
214views Database» more  EDBT 2012»
13 years 3 days ago
An optimization framework for map-reduce queries
We present an effective optimization framework for general SQLlike map-reduce queries, which is based on a novel query algebra and uses a small number of higher-order physical ope...
Leonidas Fegaras, Chengkai Li, Upa Gupta
CORR
2011
Springer
225views Education» more  CORR 2011»
14 years 4 months ago
Automatic Extraction of Open Space Area from High Resolution Urban Satellite Imagery
In the 21st century, Aerial and satellite images are information rich. They are also complex to analyze. For GIS systems, many features require fast and reliable extraction of ope...
B. G. Kodge, P. S. Hiremath
GROUP
1991
ACM
15 years 1 months ago
Extending electronic mail with conceptual modeling to provide group decision support
: This paper reports an attempt to move computer-based techniques for supporting the analysis of group cognitive processes and decision-making from being specialist applications to...
Mildred L. G. Shaw, Brian R. Gaines
PICS
2001
14 years 11 months ago
Influence of Resolution on Scanner Noise Perceptibility
The perceptibility of scanner noise as a function of resolution is studied using a model for the human visual system and for the scanner noise. The visual system is modeled using ...
Gaurav Sharma, Keith T. Knox
ICASSP
2010
IEEE
14 years 10 months ago
Feedback reduction in MIMO broadcast channels with LMMSE receivers
In this paper we analyze the performance of random beamforming schemes in a multi-user Gaussian broadcast channel. Each user will have N > 1 receive antennas allowing optimal c...
Matthew Pugh, Bhaskar D. Rao