IEVref: 171-07-18 ID: Language: en Status: Standard Term: redundancy, Synonym1: Synonym2: Synonym3: Symbol: R Definition: amount by which the decision content H0 exceeds the entropy H R = H0 − HEXAMPLE Let $\left\{a,b,c\right\}$ be a set of three events and let $p\left(a\right)=0,5$, $p\left(b\right)=0,25$ and $p\left(c\right)=0,25$ be the probabilities of their occurrences. The redundancy of this set is: .Note 1 to entry: Usually, messages can be represented with fewer characters by using suitable codes; the redundancy can be considered as a measure of the decrease of the average length of the messages accomplished by appropriate coding. Publication date: 2019-03-29 Source: IEC 80000-13:2008, 13-28, 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: