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ICPR
2004
IEEE
16 years 7 months ago
Optimizing Nearest Neighbour in Random Subspaces using a Multi-Objective Genetic Algorithm
In this work, the authors have evaluated almost 20 millions ensembles of classifiers generated by several methods. Trying to optimize those ensembles based on the nearest neighbou...
Guillaume Tremblay, Robert Sabourin, Patrick Maupi...
CONEXT
2006
ACM
16 years 15 days ago
Investigating the user mobility in wireless mobile networks through real measurements
In this paper is proposed a real mobility characterization study for wireless devices. For this, we use mobility metrics and statistic analysis to evaluate the behavior of device ...
Carlos Alberto V. Campos, Luís Felipe M. de...
ISW
2004
Springer
15 years 12 months ago
Image Recognition CAPTCHAs
CAPTCHAs are tests that distinguish humans from software robots in an online environment [3, 14, 7]. We propose and implement three CAPTCHAs based on naming images, distinguishing ...
Monica Chew, J. D. Tygar
DCOSS
2006
Springer
15 years 10 months ago
The Robustness of Localization Algorithms to Signal Strength Attacks: A Comparative Study
In this paper, we examine several localization algorithms and evaluate their robustness to attacks where an adversary attenuates or amplifies the signal strength at one or more lan...
Yingying Chen, Konstantinos Kleisouris, Xiaoyan Li...
ACL
2007
15 years 8 months ago
A Simple, Similarity-based Model for Selectional Preferences
We propose a new, simple model for the automatic induction of selectional preferences, using corpus-based semantic similarity metrics. Focusing on the task of semantic role labeli...
Katrin Erk