Unverified50% confidenceFactExact time
The data processing inequality states that if random variables X→Y→Z form a Markov chain, then the mutual information satisfies I(X;Z) ≤ I(Y;Z) ≤ I(X;Y); any processing applied to data (summarization, compression, rewriting) cannot create information about the original source out of thin air.
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50%
Confidence
Long-term
Relevance
10/14/2026
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