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固有名詞

the Hartley function

1. (mathematics) A measure of uncertainty. If a sample from a finite set A uniformly at random is picked, the information revealed after the outcome is known is given by the Hartley function ${\\displaystyle H_{0}(A):=\\mathrm {log} _{b}\\vert A\\vert }$, where ${\\displaystyle \\vert A\\vert }$ denotes the cardinality of A.