Differential Entropy Calculator
Free online differential entropy calculator. Enter your values and get instant results with the formula, step-by-step working, a worked example and FAQs — everything runs locally in your browser on Calcton, no signup required.
中文版:微分熵计算器
原理:微分熵把香农熵推广到连续分布,例如均匀分布 h = log2(b−a),正态分布 h = 0.5·log2(2πe·σ²)。它与离散熵的关键差异:可以取负值,且依赖量纲——均匀平移不改变熵,但缩放会。
步骤:① 分别输入均匀区间端点与正态标准差;② 点击计算;③ 读出两种分布的微分熵(比特)。
示例:区间 (0, 8) 的均匀分布 h = 3 比特;σ = 1 的正态分布 h = 2.047095585181 比特,σ = 2 时增至 3.047095585181——每翻倍 σ 恰好加 1 比特。
注意事项:微分熵可为负(区间长度小于 1 的均匀分布),因此「比特数」解释要谨慎;正态是给定方差下熵最大的连续分布,这正是高斯噪声最「难对付」的原因;均值不影响熵,只影响位置。
相关:信息熵计算器处理离散情形;正态分布计算器给出完整的分位数;信道容量计算器里连续 AWGN 信道的容量公式同样以微分熵为砖石。
How to use the Differential Entropy Calculator
- Fill in the inputs with your own numbers — every field shows what it expects.
- The result updates instantly as you type; no "Calculate" click needed.
- Read the result card for the main figure, the step-by-step formula, and practical notes.
Frequently asked questions
Is the Differential Entropy Calculator free?
Yes — all math calculators on Calcton are free, with no sign-up required. Your inputs are processed in your browser and never sent to a server.
Is there a Chinese version of this tool?
Yes. Use the Chinese version link above — it is the same calculator with the interface in Simplified Chinese.
References
Formulas and benchmarks used by this calculator follow these published sources.
KevinContent LeadCalcton Editorial Team · Last updated 2026-10-06
Kevin maintains Calcton's formula verification and content: every calculator cites the standard it implements, worked examples are recomputed programmatically, and health benchmarks follow WHO and international guidelines.
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