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Inequality was in the wrong direction for data processing. Info can only be lost from post processing |
Nevermind, was looking at lower Markov chain |
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==Example==
Let <math>X \rightarrow Y \rightarrow Z</math> be a [[Markov chain]]; then,<br>
<math> I(x;y) \
<math>I(x;y) = I(x;z)</math> if and only if <math>X \rightarrow Z \rightarrow Y</math><br>
where <math>I(x;y)</math> is the [[mutual information]].
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