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添加847字节 、 2021年2月12日 (五) 23:56
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Here, <math>h_e(X)</math> was used rather than <math>h(X)</math> to make it explicit that the logarithm was taken to base ''e'', to simplify the calculation.
 
Here, <math>h_e(X)</math> was used rather than <math>h(X)</math> to make it explicit that the logarithm was taken to base ''e'', to simplify the calculation.
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--[[用户:CecileLi|CecileLi]]([[用户讨论:CecileLi|讨论]])  【审校】补充翻译:
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设<math>X</math>为[[指数分布|指数分布]]随机变量,参数为<math>\lambda</math>,即概率密度函数
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:<math>f(x)=\lambda e^{-\lambda x}\mbox{for}x\geq 0.</math>
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它的微分熵是
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{|
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|-
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|<math>h\u e(X)\,</math>
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|<math>=-\int\u 0^\infty\lambda e^{-\lambda x}\log(\lambda e^{-\lambda x})\,dx</math>
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|-
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|<math>=-\left(\int\u 0^\infty(\log\lambda)\lambda e^{-\lambda x}\,dx+\int\u 0^\infty(-\lambda x)\lambda e^{-\lambda x}\,dx\right)</math>
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|-
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|<math>=-\log\lambda\int\u 0^\infty f(x)\,dx+\lambda E[x]</math>
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|-
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|<math>=-\log\lambda+1\,.</math>
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|}
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这里,使用<math>h(X)</math>而不是<math>h(X)</math>来明确对数取基数“e”,以简化计算。
    
==Relation to estimator error==
 
==Relation to estimator error==
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