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・ Information set
・ Information set (game theory)
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Information source (mathematics)
・ Information Sources in Law
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・ Information system
・ Information Systems & Services
・ Information Systems (journal)
・ Information Systems Associates FZE
・ Information Systems Examination Board
・ Information Systems International Conference
・ Information Systems Journal


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Information source (mathematics) : ウィキペディア英語版
Information source (mathematics)
In mathematics, an information source is a sequence of random variables ranging over a finite alphabet Γ, having a stationary distribution.
The uncertainty, or entropy rate, of an information source is defined as
:H\ = \lim_ H(X_n | X_0, X_1, \dots, X_)
where
: X_0, X_1, \dots, X_n\,
is the sequence of random variables defining the information source, and
:H(X_n | X_0, X_1, \dots, X_)
is the conditional information entropy of the sequence of random variables. Equivalently, one has
:H\ = \lim_
\frac.
==See also==

* Markov information source
* Asymptotic equipartition property

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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