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IDEAL
2010
Springer
14 years 8 months ago
Approximating the Covariance Matrix of GMMs with Low-Rank Perturbations
: Covariance matrices capture correlations that are invaluable in modeling real-life datasets. Using all d2 elements of the covariance (in d dimensions) is costly and could result ...
Malik Magdon-Ismail, Jonathan T. Purnell
AAMAS
2011
Springer
14 years 6 months ago
Benchmarking hybrid algorithms for distributed constraint optimisation games
In this paper, we consider algorithms for distributed constraint optimisation problems (DCOPs). Using a potential game characterisation of DCOPs, we decompose six distributed DCOP...
Archie C. Chapman, Alex Rogers, Nicholas R. Jennin...
MMS
2011
14 years 6 months ago
Dynamic behavior of balanced NV-trees
Abstract In recent years, some approximate highdimensional indexing techniques have shown promising results by trading off quality guarantees for improved query performance. While ...
Arnar Ólafsson, Björn Þór...
AAAI
2011
13 years 11 months ago
Transportability of Causal and Statistical Relations: A Formal Approach
We address the problem of transferring information learned from experiments to a different environment, in which only passive observations can be collected. We introduce a formal ...
Judea Pearl, Elias Bareinboim
AAAI
2011
13 years 11 months ago
Lossy Conservative Update (LCU) Sketch: Succinct Approximate Count Storage
In this paper, we propose a variant of the conservativeupdate Count-Min sketch to further reduce the overestimation error incurred. Inspired by ideas from lossy counting, we divid...
Amit Goyal, Hal Daumé III