Data processing inequality
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'. As explained by Kinney and Atwal, the DPI means that information is generally lost (never gained) when transmitted through a noisy channel.
- Beaudry, Normand (2012), "An intuitive proof of the data processing inequality", Quantum Information & Computation, 12 (5–6): 432–441, arXiv: , Bibcode:2011arXiv1107.0740B
- Kinney; Atwal (Mar 2014). "Equitability, mutual information, and the maximal information coefficient". Proc Natl Acad Sci U S A. 111: 3354–9. arXiv: . Bibcode:2014PNAS..111.3354K. doi:10.1073/pnas.1309933111. PMC . PMID 24550517.
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