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information diagram
An information diagram is a type of Venn diagram used in information theory to illustrate relationships among Shannon's basic measures of information: entropy, joint entropy, conditional entropy and mutual information.〔Fazlollah Reza. An Introduction to Information Theory. New York: McGraw-Hill 1961. New York: Dover 1994. ISBN 0-486-68210-2〕〔R. W. Yeung, A First Course in Information Theory. Norwell, MA/New York: Kluwer/Plenum, 2002.〕 Information diagrams are a useful pedagogical tool for teaching and learning about these basic measures of information, but using such diagrams carries some non-trivial implications. For example, Shannon's entropy in the context of an information diagram must be taken as a signed measure. (See the article ''Information theory and measure theory'' for more information.)
==References==
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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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