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WMCSA
2008
IEEE
16 years 1 months ago
Making CAPTCHAs clickable
We show how to convert regular keyboard-entry CAPTCHAs into clickable CAPTCHAs. The goal of this conversion is to simplify and speed-up the entry of the CAPTCHA solution, to minim...
Richard Chow, Philippe Golle, Markus Jakobsson, Lu...
195
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CEC
2007
IEEE
16 years 1 months ago
Towards an immune system that solves CSP
—Constraint satisfaction problems (CSPs) widely occur in artificial intelligence. In the last twenty years, many algorithms and heuristics were developed to solve CSP. Recently,...
María-Cristina Riff, Marcos Zú&ntild...
CVPR
2007
IEEE
16 years 1 months ago
High Distortion and Non-Structural Image Matching via Feature Co-occurrence
We propose a novel approach for determining if a pair of images match each other under the effect of a highdistortion transformation or non-structural relation. The co-occurrence ...
Xi Chen, Tat-Jen Cham
FOCI
2007
IEEE
16 years 1 months ago
Opposition-Based Differential Evolution (ODE) with Variable Jumping Rate
— In this paper, a time varying jumping rate (TVJR) model for Opposition-Based Differential Evolution (ODE) has been proposed. According to this model, the jumping rate changes l...
Shahryar Rahnamayan, Hamid R. Tizhoosh, Magdy M. A...
GLOBECOM
2007
IEEE
16 years 1 months ago
Experiences Implementing Cognitive Radio Control Algorithms
— In recent years, several algorithms for controlling cognitive radio platforms have been proposed. In this paper, we review the existing approaches that have been developed for ...
Christian Doerr, Douglas C. Sicker, Dirk Grunwald