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Data processing inequality

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The Data processing inequality is an information theoretic concept which states that the information content of a signal cannot be increased via a local physical operation. This can be expressed concisely as 'post-processing cannot increase information'[1]

References

  1. ^ Beaudry, Normand (2012). "An intuitive proof of the data processing inequality". arXiv.

http://www.scholarpedia.org/article/Mutual_information

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