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Research on Deep Learning Techniques in Breaking Text-Based Captchas and Designing Image-Based Captcha.
Mengyun Tang
Haichang Gao
Yang Zhang
Yi Liu
Ping Zhang
Ping Wang
Published in:
IEEE Trans. Inf. Forensics Secur. (2018)
Keyphrases
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deep learning
unsupervised learning
unsupervised feature learning
machine learning
restricted boltzmann machine
mental models
multiscale
decision making
weakly supervised