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SUMMARY:Linguistic Steganography using Automatically Generated Paraphrases
  - Ching-Yun (Frannie) Chang\, University of Cambridge
DTSTART:20100527T110000Z
DTEND:20100527T113000Z
UID:TALK25031@talks.cam.ac.uk
CONTACT:Laura Rimell
DESCRIPTION:This paper describes a method for checking the acceptability o
 f paraphrases in context. We use the Google n-gram data and a CCG parser t
 o certify the paraphrasing grammaticality and fluency. We collect a corpus
  of human judgements to evaluate our system. The ultimate goal of our work
  is to integrate text paraphrasing into a Linguistic Steganography system\
 , by using paraphrases to hide information in a cover text. We propose aut
 omatically generated paraphrases as a new and useful source of transformat
 ions for Linguistic Steganography\, and show that our method for checking 
 paraphrases is effective at maintaining a high level of imperceptibility\,
  which is crucial for effective staganography.
LOCATION:GS15\, Computer Laboratory
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