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Part 13: Information Science·84 entries
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13-34

irrelevance

URNurn:iec:std:iec:80000-13:2025-02:::13-34
Download RDF.jsonld.ttl
https://metanorma.github.io/isq-smart/quantities/part-13/t13-34
urn:iec:std:iec:80000-13:2025-02:::13-34
ISQ Identifiers
ISO
urn:iso:std:iso:80000:-13:ed-2008:en:item:13-34
IEC
urn:iec:std:iec:80000-13:2025-02:::item:13-34
Designations
ENirrelevance
FRaltération
Symbol
H - ( I \ | X )
Notation systems
Rendered
H - ( I \ | X )
AsciiMath
H_{"-"}(I\|X)
LaTeX
H_{\text{-}} ( I \ | X )

Definition

EN

conditional entropy (t13-32,item 13-32) of a set I of received characters given the set X of emitted characters:

H - ( I \ | X ) = H + ( X \ | I ) + H ( I ) − H ( X ) ,

where H + ( X \ | I ) is equivocation (t13-33,item 13-33) and H is entropy (t13-25,item 13-25)

FR

entropie conditionnelle (t13-32,13-32) d'un ensemble I de caractères reçus connaissant l'ensemble X de caractères reçus:

H - ( I \ | X ) = H + ( X \ | I ) + H ( I ) − H ( X ) ,

où H + ( X \ | I ) est équivoque (t13-33,13-33) et H

est l'entropie maximale (t13-25,13-25)

Units

S h
shannon
View related quantities →
H a r t
hartley
View related quantities →
n a t
natural unit of information
View related quantities →

Notes

EN

Irrelevance is a quantitative measure of the information added to the emitted information owing to distortion.

See IEC 60050-171,droploc%locality:item="171-07-25".

FR

L'altération est une mesure quantitative de l'information qui s'ajoute à l'information émise par suite de la distorsion.

Voir l'IEC 60050-171,droploc%locality:item="171-07-25".

Concept HierarchyPendrill (2024)
1dimensionless quantitiesLevel 0 · Kind

Ontology
isq:Quantitysmart:TermEntry

Class Hierarchy

smart:Entitysmart:TermEntryisq:Quantity

A physical quantity as defined in ISO/IEC 80000, with associated symbols, definitions, and units of measurement.

Instance IRI

isq:t13-34

Properties

isq:QuantityShape
PropertyValue
rdf:type
isq:Quantitysmart:TermEntry
dcterms:identifier
13-34
skosxl:prefLabel
"irrelevance"@en
skosxl:altLabel
"H_{"-"}(I\|X)"@en
skos:definition
conditional entropy (<<t13-32,item 13-32>>) of a set stem:[I] of received characters given the set stem:[X] of emitted c…
skos:note
Irrelevance is a quantitative measure of the information added to the emitted information owing to distortion. See <<ie…
isq:hasUnit
Sh (shannon)Hart (hartley)nat (natural unit of information)
isq:hasDimension
isq:Dimension
smart:hasBindingnessType
bindingness-type:normative
dcterms:isPartOf
isq:part-13

Related Entities

isq:QuantityShape isq:part-13 isq:Unit isq:Dimension isq:hasDimension smart:TermEntry