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Towards Linguistic Steganography: A
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Contents
List of Figures
.
Unilateral frequency distribution of a ciphertext
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Ciphertext
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Unilateral frequency distribution of English plaintext.
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Two similar patterns.
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Cleartext
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A code for a homophonic cipher.
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Homophonic ciphertext with code
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Homophonic ciphertext
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Framework for cryptographic communication
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Framework for steganographic communication.
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Two kinds of weak cryptosystems.
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Parts of a stegosystem
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Mimicry as the inverse of compression.
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A perfect stegosystem.
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A tough question for a computer.
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Ambiguity in the matrix-representation.
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Ambiguity illustrated by VENN-diagrams.
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Results of
SENSEVAL-2
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VENN-diagram for the levels of abstraction for guitar.
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A sample of WordNet's hyponymy-structure.
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A Huffman-tree of words in a synset.
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An example for relative entropy.
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A context-free grammar
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A systemic grammar
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A text-sample of Winstein's system
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Encoding a secret by Winstein's scheme.
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The word-choice hash
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An example of coinciding word-choices
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A
NICETEXT
dictionary
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A text-sample of Chapman's system
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A text-sample of Wayner's system
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A text-sample of Atallah's system
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ANL trees as produced by Atallah's system
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Comparison of schemes.
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Disjunct synsets
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How word-choices are assigned to blocks.
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Blocking by Method I
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Blocking by Method II
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Splitting word-choices into atomic units.
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Assigning Blocking-Methods to elements.
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An exemplaric coding-scheme.
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Encoding a secret
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Decoding the secret again
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Two kinds of ambiguity.
Richard Bergmair 2005-01-31