Login / Signup
CAPTCHA: Using Hard AI Problems for Security.
Luis von Ahn
Manuel Blum
Nicholas J. Hopper
John Langford
Published in:
EUROCRYPT (2003)
Keyphrases
</>
artificial intelligence
knowledge representation
intelligent systems
intrusion detection
computer security
machine learning
genetic algorithm
expert systems
np complete
problems involving
security problems
computationally hard