Physics · Communication Systems
In information theory, what does the mutual information I(X; Y) between two random variables X and Y represent?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The joint cumulative entropy of X and Y combined
- 2The amount of information shared between X and Y, or the reduction in uncertainty of X due to the knowledge of Y✓
- 3The total deterministic structural redundancy present within X and Y
- 4The statistical cross-channel noise component shared between X and Y
Correct answer
The amount of information shared between X and Y, or the reduction in uncertainty of X due to the knowledge of Y
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