Definition
The joint entropy of two variables and is defined as
where and are particular values of and, respectively, is the probability of these values occurring together, and is defined to be 0 if .
For more than two variables this expands to
where are particular values of, respectively, is the probability of these values occurring together, and is defined to be 0 if .
Read more about this topic: Joint Entropy
Famous quotes containing the word definition:
“The man who knows governments most completely is he who troubles himself least about a definition which shall give their essence. Enjoying an intimate acquaintance with all their particularities in turn, he would naturally regard an abstract conception in which these were unified as a thing more misleading than enlightening.”
—William James (1842–1910)
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—Ana Castillo (b. 1953)
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—Ralph Waldo Emerson (1803–1882)