Given a column with a list of values, computes the Shannon Entropy for that set of values. The single measure version of this is:
ShannonEntropy =
SUMX(
SUMMARIZE(
Entities,
Entities[Entity],
"H(X)",
-1*COUNTROWS(Entities)/COUNTROWS(ALL(Entities))*LOG(COUNTROWS(Entities)/COUNTROWS(ALL(Entities)),2))
,[H(X)])
There is a single input, a column, in this case called Entities[Entity].
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