Information theory | Entropy and information

Conditional entropy

In information theory, the conditional entropy quantifies the amount of information needed to describe the outcome of a random variable given that the value of another random variable is known. Here, information is measured in shannons, nats, or hartleys. The entropy of conditioned on is written as . (Wikipedia).

Conditional entropy
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From playlist Probability

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How to find the conditional probability from a tree diagram

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From playlist Probability

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Finding the conditional probability from a tree diagram

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From playlist Probability

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From playlist Probability

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From playlist Probability

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Related pages

Support (mathematics) | Variation of information | Joint entropy | Mutual information | Outcome (probability) | Estimator | Chain rule (probability) | Information content | Information theory | Entropy power inequality | Uncertainty principle | Likelihood function | Hartley (unit) | Random variate | Conditional quantum entropy | Conditional independence | Random variable | Entropy (information theory) | Expected value | Shannon (unit) | Nat (unit) | Conditional expectation | Probability mass function