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Sketcha: a captcha based on line drawings of 3D models.
Steven A. Ross
J. Alex Halderman
Adam Finkelstein
Published in:
WWW (2010)
Keyphrases
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experimental data
probabilistic model
training data
search algorithm
statistical model
statistical models
data sets
information systems
similarity measure
data model
maximum likelihood
parameter estimation
machine learning algorithms
parametric models