articleCommunications of the ACMFeb 1, 2004Closed access

Telling humans and computers apart automatically

LVLuis von AhnMBManuel BlumJLJohn Langford

Carnegie Mellon University · Toyota Technological Institute at Chicago

Indexed incrossref

Abstract

How lazy cryptographers do AI.

Citation impact

906
total citations
FWCI
76.69
Percentile
100%
References
8
Citations per year

Authors

3

Topics & keywords

Topics
Keywords
  • Computer science
  • Artificial intelligence
  • Computer security
  • Human–computer interaction
  • Natural language processing
  • Programming language
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