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PODS
2008
ACM
141views Database» more  PODS 2008»
16 years 6 months ago
On the complexity of deriving schema mappings from database instances
We introduce a theoretical framework for discovering relationships between two database instances over distinct and unknown schemata. This framework is grounded in the context of ...
Pierre Senellart, Georg Gottlob
JMLR
2012
13 years 9 months ago
Krylov Subspace Descent for Deep Learning
In this paper, we propose a second order optimization method to learn models where both the dimensionality of the parameter space and the number of training samples is high. In ou...
Oriol Vinyals, Daniel Povey
ICDT
2012
ACM
235views Database» more  ICDT 2012»
13 years 9 months ago
Equivalence and minimization of conjunctive queries under combined semantics
The problems of query containment, equivalence, and minimization are recognized as very important in the context of query processing, specifically of query optimization. In their...
Rada Chirkova
TABLEAUX
2009
Springer
16 years 1 months ago
A Novel Architecture for Situation Awareness Systems
Situation Awareness (SA) is the problem of comprehending elements of an environment within a volume of time and space. It is a crucial factor in decision-making in dynamic environm...
Franz Baader, Andreas Bauer 0002, Peter Baumgartne...
CVPR
2009
IEEE
16 years 11 months ago
Early Spatiotemporal Grouping with a Distributed Oriented Energy Representation
Spatiotemporal data is associated with vast amounts of raw samples. Given the limited computational resources typically available, an initial organization of this data supporting ...
Konstantinos G. Derpanis, Richard P. Wildes