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quantitykind:InformationContent

http://qudt.org/vocab/quantitykind/InformationContent
Turtle snippet Incoming relations
Types: qudt:QuantityKind
PredicateObject
rdf:type qudt:QuantityKind
dcterms:description “The information content (or self-information) I(x) of an outcome x is a measure of the information gained when x occurs, defined as the logarithm of the reciprocal of its probability: I(x) = log(1/p(x)). The value depends on the base of the logarithm, which fixes the unit — base 2 gives the shannon (Sh), base e the nat, and base 10 the hartley (Hart). It is the per-outcome quantity whose expectation over a distribution is the information entropy. ”@en
qudt:applicableUnit
qudt:eclassCode
  • “0173-1#Z4-BAJ463#001”
  • “0173-1#Z4-BAJ468#001”
  • “0173-1#Z4-BAJ469#001”
qudt:hasDimensionVector qkdv:A0E0L0I0M0H0T0D1
qudt:iec61360Code “0112/2///62720#UAD066”
qudt:informativeReference https://cdd.iec.ch/cdd/iec62720/iec62720.nsf/ListsOfUnitsAllVersions/0112-2---62720%23UAD066
qudt:plainTextDescription “The information content (or self-information) I(x) of an outcome x is a measure of the information gained when x occurs, defined as the logarithm of the reciprocal of its probability: I(x) = log(1/p(x)). The value depends on the base of the logarithm, which fixes the unit — base 2 gives the shannon (Sh), base e the nat, and base 10 the hartley (Hart). It is the per-outcome quantity whose expectation over a distribution is the information entropy. ”@en
rdfs:comment
  • “Applicable units are those of quantitykind:InformationContent”
  • “ECLASS models the choice of logarithm base as three separate quantities, so all three of its codes map to this one quantity kind. Where a single ECLASS code is required, select the one matching the unit in which the quantity is expressed: BAJ463 (base 2) for unit:SHANNON, BAJ468 (base 10) for unit:HART, and BAJ469 (base e) for unit:NAT. QUDT follows IEC CDD UAD066, which lists the shannon, the hartley and the natural unit of information as three units of a single quantity, leaving the base to be carried by the unit. See qudt-public-repo issue 1410. ”@en
rdfs:isDefinedBy http://qudt.org/3.5.0/vocab/quantitykind
rdfs:label “Information Content”@en
rdfs:seeAlso quantitykind:InformationEntropy
Generated 2026-07-28T13:52:55.573+00:00