tempbib7.bib

@INPROCEEDINGS{Bolshakov2004,
  author = {Igor A. Bolshakov},
  institution = {Center for Computing Research,
    National Polytechnic Institute, Mexico City, Mexico},
  title = {A Method of Linguistic Steganography Based on
    Collocationally-Verified Synonymy.},
  booktitle = {Information Hiding: 6th International Workshop},
  editor = {Jessica J. Fridrich},
  location = {Toronto, Canada},
  month = {May},
  year = {2004},
  publisher = {Springer},
  series = {Lecture Notes in Computer Science},
  volume = {3200},
  isbn = {3-540-24207-4},
  doi = {10.1007/b104759},
  pages = {180--191},
  abstract = {A method is proposed of the automatic concealment of digital
    information in rather long orthographically and semantically correct
    texts. The method does not change the meaning of the source text; it only
    replaces some words by their synonyms. Groups of absolute synonyms are
    used in a context independent manner, while the groups of relative
    synonyms are previously tested for semantic compatibility with the
    collocations containing the word to be replaced. A specific replacement
    is determined by the hidden information. The collocations are
    syntactically connected and semantically compatible pairs of content
    words; they are massively gathered beforehand, with a wide diversity in
    their stability and idiomacity. Thus the necessary linguistic resources
    are a specific synonymy dictionary and a very large database of
    collocations. The steganographic algorithm is informally outlined. An
    example of hiding binary information in a Russian text fragment is
    manually traced, with a rough evaluation of the steganographic bandwidth.}
}

@INPROCEEDINGS{Calvo2004,
  author = {Hiram Calvo and Igor A. Bolshakov},
  institution = {Center for Computing Research,
    National Polytechnic Institute, Mexico City, Mexico},
  title = {Using Selectional Preferences for Extending a Synonymous
    Paraphrasing Method in Steganography},
  booktitle = {Avances en Ciencias de la Computacion e Ingenieria de Computo
    - CIC'2004: XIII Congreso Internacional de Computacion},
  editor = {J. H. Sossa Azuela},
  location = {Mexico City, Mexico},
  month = {October},
  year = {2004},
  pages = {231--242},
  abstract = {Linguistic steganography allows hiding information in a text.
    The resulting text must be grammatically correct and semantically coherent
    to be unsuspicious. Among several methods of linguistic steganography we
    adhere to previous approaches which use synonymous paraphrasing, i.e.,
    substituting content words by their equivalents. Context must be
    considered to avoid possible substitutions that break coherence (for
    example spicy dog instead of hot dog). We base our method on previous
    work in linguistic steganography that uses collocations for verifying
    context. We propose using selectional preferences instead of collocations
    because selectional preferences can be collected automatically from large
    corpora in a reliable manner, thus allowing our method to be applied for
    any language. The steganographic algorithm is informally outlined and an
    example of hiding binary information in a Spanish text fragment is
    presented, with a rough evaluation of the ratio of hidden information size
    to the necessary size of the original text.}
}