IEVref: 171-07-28 ID: Language: en Status: Standard Term: character mean entropy Synonym1: character mean information content [Preferred] Synonym2: character average information [Admitted] Synonym3: content character information rate [Admitted] Symbol: ${H}^{\prime }$ Definition: mean per character of the entropy for all possible messages from a stationary message source ${H}^{\prime }=\underset{m\to \infty }{\mathrm{lim}}\frac{{H}_{m}}{m}$ where Hm is the entropy of the set of all sequences of m characters from the sourceNote 1 to entry: The character mean entropy can be expressed in a unit such as the shannon per character. Note 2 to entry: The limit might not exist if the source were not stationary. Publication date: 2019-03-29 Source: IEC 80000-13:2008, 13-37, modified – Addition of information useful for the context of the IEV, and adaptation to the IEV rules Replaces: Internal notes: CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: