計算 2點分佈，0.1，0.9的熵
-H(X)=0.1 * log(0.1) + 0.9 * log(0.9)
=-(0.1* log10 + 0.9*log(10)-0.9* log(9))
= - (log(10)-0.9*log9)
=-(3.3219280948873626-0.9 *3.1699250014423126)
=-0.46899559358928133
熵
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計算 2點分佈，0.1，0.9的熵
-H(X)=0.1 * log(0.1) + 0.9 * log(0.9)
=-(0.1* log10 + 0.9*log(10)-0.9* log(9))
= - (log(10)-0.9*log9)
=-(3.3219280948873626-0.9 *3.1699250014423126)
=-0.46899559358928133