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» Resolution-stationary random number generators
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SIGKDD
2010
128views more  SIGKDD 2010»
14 years 11 months ago
On cross-validation and stacking: building seemingly predictive models on random data
A number of times when using cross-validation (CV) while trying to do classification/probability estimation we have observed surprisingly low AUC's on real data with very few...
Claudia Perlich, Grzegorz Swirszcz
ICDT
1999
ACM
72views Database» more  ICDT 1999»
15 years 8 months ago
On the Generation of 2-Dimensional Index Workloads
A large number of database index structures have been proposed over the last two decades, and little consensus has emerged regarding their relative e ectiveness. In order to empir...
Joseph M. Hellerstein, Lisa Hellerstein, George Ko...
SOCC
2008
IEEE
95views Education» more  SOCC 2008»
15 years 10 months ago
Pseudo-random clocking to enhance signal integrity
— A methodology is proposed to reduce power/ground and substrate coupling noise by randomizing the clock signal. A pseudo-random number generation algorithm is used to produce a ...
Selcuk Kose, Emre Salman, Zeljko Ignjatovic, Eby G...
GECCO
2010
Springer
155views Optimization» more  GECCO 2010»
15 years 9 months ago
Negative selection algorithms without generating detectors
Negative selection algorithms are immune-inspired classifiers that are trained on negative examples only. Classification is performed by generating detectors that match none of ...
Maciej Liskiewicz, Johannes Textor
PAMI
2007
185views more  PAMI 2007»
15 years 3 months ago
A Two-Level Generative Model for Cloth Representation and Shape from Shading
In this paper we present a two-level generative model for representing the images and surface depth maps of drapery and clothes. The upper level consists of a number of folds whic...
Feng Han, Song Chun Zhu