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Entropy (information theory)
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==See also== {{Portal|Mathematics}} {{colbegin}} *[[Approximate entropy]] (ApEn) *[[Entropy (thermodynamics)]] *[[Cross entropy]] – is a measure of the average number of bits needed to identify an event from a set of possibilities between two probability distributions *[[Entropy (arrow of time)]] *[[Entropy encoding]] – a coding scheme that assigns codes to symbols so as to match code lengths with the probabilities of the symbols. *[[Entropy estimation]] *[[Entropy power inequality]] *[[Fisher information]] *[[Graph entropy]] *[[Hamming distance]] *[[History of entropy]] *[[History of information theory]] *[[Information fluctuation complexity]] *[[Information geometry]] *[[Kolmogorov–Sinai entropy]] in [[dynamical system]]s *[[Levenshtein distance]] *[[Mutual information]] *[[Perplexity]] *[[Qualitative variation]] – other measures of [[statistical dispersion]] for [[nominal distributions]] *[[Quantum relative entropy]] – a measure of distinguishability between two quantum states. *[[Rényi entropy]] – a generalization of Shannon entropy; it is one of a family of functionals for quantifying the diversity, uncertainty or randomness of a system. *[[Randomness]] *[[Sample entropy]] (SampEn) *[[Shannon index]] *[[Theil index]] *[[Typoglycemia]] {{colend}}
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