http://qudt.org/schema/qudt/QuantityKind
<p>A <em>Quantity Kind</em> is any observable property that can be measured and quantified numerically.
Familiar examples include physical properties such as length, mass, time, force, energy, power, electric charge, etc.
Less familiar examples include currency, interest rate, price to earning ratio, and information capacity.
</p>
Instances of qudt:QuantityKind can have the following properties:
| PROPERTY | TYPE | DESCRIPTION | RANGE |
|---|
By the associated SHACL property shapes, instances of qudt:QuantityKind can have the following properties:
| PROPERTY | PROPERTY TYPE | DESCRIPTION | MIN | MAX | VALUE TYPE | OTHER CONSTRAINTS | GLOBAL RANGE |
|---|---|---|---|---|---|---|---|
| qudt:QuantityKind | |||||||
| qudt:applicableCGSUnit | rdf:Property | 0 | * | qudt:Unit | -- | ||
| qudt:applicableISOUnit | rdf:Property | 0 | * | qudt:Unit | -- | ||
| qudt:applicableImperialUnit | rdf:Property | 0 | * | qudt:Unit | -- | ||
| qudt:applicableSIUnit | rdf:Property | 0 | * | qudt:Unit | -- | ||
| qudt:applicableUSCustomaryUnit | rdf:Property | 0 | * | qudt:Unit | -- | ||
| qudt:applicableUnit | rdf:Property | <p>See this page on the QUDT GitHub<a href="https://github.com/qudt/qudt-public-repo/wiki/Advanced-User-Guide#4-computing-applicable-units-for-a-quantitykind">Wiki</a> on how "qudt:applicableUnit" is computed from "qudt:hasQuantityKind" and then materialized. </p> | 0 | * | qudt:Unit | -- | |
| qudt:baseCGSUnitDimensions | rdf:Property | 0 | 1 | -- | |||
| qudt:baseISOUnitDimensions | rdf:Property | 0 | 1 | -- | |||
| qudt:baseImperialUnitDimensions | rdf:Property | 0 | 1 | -- | |||
| qudt:baseSIUnitDimensions | rdf:Property | 0 | 1 | -- | |||
| qudt:baseUSCustomaryUnitDimensions | rdf:Property | 0 | 1 | -- | |||
| qudt:belongsToSystemOfQuantities | rdf:Property | 0 | * | qudt:SystemOfQuantityKinds | -- | ||
| qudt:dimensionVectorForSI | rdf:Property | 0 | 1 | qudt:QuantityKindDimensionVector_SI | -- | ||
| qudt:eclassCode | rdf:Property | Provides an IRDI (International Registration Data Identifier) that identifies the corresponding definition in the ECLASS Standard. | 0 | * | xsd:string | -- | |
| qudt:expression | rdf:Property | An 'expression' is a finite combination of symbols that are well-formed according to rules that apply to units of measure, quantity kinds and their dimensions. | 0 | * | -- | ||
| qudt:hasDimensionVector | rdf:Property | 1 | 1 | qudt:QuantityKindDimensionVector |
sh:severity
sh:Info
|
-- | |
| qudt:iec61360Code | rdf:Property | Provides an IRDI (International Registration Data Identifier) that identifies the corresponding definition in the IEC CDD (Common Data Dictionary). | 0 | * | xsd:string | -- | |
| qudt:latexDefinition | rdf:Property | 0 | 1 | qudt:LatexString | -- | ||
| qudt:mathMLdefinition | rdf:Property | 0 | 1 | xsd:string | -- | ||
| qudt:qkdvDenominator | rdf:Property | 0 | 1 | qudt:QuantityKindDimensionVector | -- | ||
| qudt:qkdvNumerator | rdf:Property | 0 | 1 | qudt:QuantityKindDimensionVector | -- | ||
| qudt:siExactMatch | rdf:Property | 0 | 1 | -- | |||
| qudt:AbstractQuantityKind | |||||||
| qudt:altSymbol | rdf:Property | An alternative symbol | 0 | * | -- | ||
| qudt:latexSymbol | rdf:Property | The symbol is a glyph that is used to represent some concept, typically a unit or a quantity, in a compact form. For example, the symbol for an Ohm is $ohm$. This contrasts with 'unit:abbreviation', which gives a short alphanumeric abbreviation for the unit, 'ohm' for Ohm. | 0 | * | qudt:LatexString | -- | |
| qudt:organizedUnder | rdf:Property | <p>Relates a quantity kind to a broader quantity kind for the purpose of <em>organization and unit applicability only</em> — it does <strong>not</strong> assert commensurability. A sub-property of <code>skos:broader</code> (so it contributes to the concept hierarchy), but unlike <code>qudt:specializationOf</code> it makes no commensurability claim: <code>qudt:organizedUnder</code> groups quantity kinds that share a dimension but are <em>not</em> interchangeable — principally the dimensionless quantity kinds, which are all organised under <code>quantitykind:Dimensionless</code> / <code>quantitykind:DimensionlessRatio</code> without being commensurable with one another. <code>qudt:organizedUnder</code> still contributes to the concept hierarchy (via <code>skos:broader</code>), and the build still validates that it only links quantity kinds of the same dimension, but the applicable-unit computation traverses only <code>qudt:specializationOf</code> — an organizational grouping confers no units on its members. The commensurability test likewise traverses <code>qudt:specializationOf</code> and <code>qudt:exactMatch</code> (never <code>qudt:organizedUnder</code>).</p> | 0 | * | qudt:QuantityKind | -- | |
| qudt:specializationOf | rdf:Property | <p>Relates a quantity kind to a broader quantity kind of which it is a <em>specialization</em>, asserting <strong>commensurability</strong>: the two share a dimension, their values are comparable and addable, and their units are inter-convertible. A sub-property of <code>skos:broader</code>. Commensurability families are the connected components under <code>(qudt:specializationOf | qudt:exactMatch)</code>. Contrast <code>qudt:organizedUnder</code>, which groups quantity kinds without asserting commensurability.</p> | 0 | * | qudt:QuantityKind | -- | |
| qudt:symbol | rdf:Property | The symbol is a glyph that is used to represent some concept, typically a unit or a quantity, in a compact form. For example, the symbol for an Ohm is $ohm$. This contrasts with 'unit:abbreviation', which gives a short alphanumeric abbreviation for the unit, 'ohm' for Ohm. | 0 | 1 | -- | ||
skos:broader |
-- | 0 | * | qudt:QuantityKind | -- | ||
| qudt:Verifiable | |||||||
| qudt:dbpediaMatch | rdf:Property | 0 | * | xsd:anyURI | -- | ||
| qudt:informativeReference | rdf:Property | Provides a way to reference a source that provided useful but non-normative information. | 0 | * |
sh:or
( xsd:anyURI | qudt:Citation )
|
-- | |
| qudt:isoNormativeReference | rdf:Property | Provides a way to reference the ISO unit definition. | 0 | * | xsd:anyURI | -- | |
| qudt:normativeReference | rdf:Property | Provides a way to reference information that is an authoritative source providing a standard definition | 0 | * | xsd:anyURI | -- | |
| qudt:wikidataMatch | rdf:Property | This property relates a QUDT concept to a Wikidata item. The Wikidata item is identified by the Wikidata URI, which is of the form `https://www.wikidata.org/wiki/Q{number}`. | 0 | 1 | -- | ||
| qudt:Concept | |||||||
| dcterms:description | rdf:Property | 0 | * | -- | |||
| dcterms:isReplacedBy | rdf:Property | 0 | 1 | -- | |||
dtype:code |
-- | 0 | * | -- | |||
| qudt:abbreviation | rdf:Property | <p>An abbreviation for a unit is a short ASCII string that is used in place of the full name for the unit in contexts where non-ASCII characters would be problematic, or where using the abbreviation will enhance readability. When a power of abase unit needs to be expressed, such as squares this can be done using abbreviations rather than symbols. For example, <em>sq ft</em> means <em>square foot</em>, and <em>cu ft</em> means <em>cubic foot</em>. </p> | 0 | 1 | xsd:string | -- | |
| qudt:deprecated | rdf:Property | 0 | 1 | xsd:boolean | -- | ||
| qudt:deprecatedInVersion | rdf:Property | Version number of the first QUDT release in which an entity was deprecated. | 0 | 1 | xsd:string |
sh:pattern
^\d+\.\d+\.\d+$
|
-- |
| qudt:exactMatch | owl:ObjectProperty | 0 | * | qudt:Concept | -- | ||
| qudt:guidance | rdf:Property | 0 | * | rdf:HTML | -- | ||
| qudt:hasRule | rdf:Property | 0 | * | qudt:Rule | -- | ||
| qudt:id | rdf:Property | <p>The "qudt:id" is an identifier string that uniquely identifies a QUDT concept. The identifier is constructed using a prefix. For example, units are coded using the pattern: "UCCCENNNN", where "CCC" is a numeric code or a category and "NNNN" is a digit string for a member element of that category. </p> <p>For scaled units there may be an addition field that has the format "QNN" where "NN" is a digit string representing an exponent power, and "Q" is a qualifier that indicates with the code "P" that the power is a positive decimal exponent, or the code "N" for a negative decimal exponent, or the code "B" for binary positive exponents. </p> | 0 | 1 | xsd:string | -- | |
| qudt:plainTextDescription | rdf:Property | A plain text description is used to provide a description with only simple ASCII characters for cases where LaTeX , HTML or other markup would not be appropriate. | 0 | * | -- | ||
rdf:type |
-- | 1 | * | -- | |||
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix sh: <http://www.w3.org/ns/shacl#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
qudt:QuantityKind a rdfs:Class,
sh:NodeShape ;
rdfs:label "Quantity Kind" ;
dcterms:description """
<p>A <em>Quantity Kind</em> is any observable property that can be measured and quantified numerically.
Familiar examples include physical properties such as length, mass, time, force, energy, power, electric charge, etc.
Less familiar examples include currency, interest rate, price to earning ratio, and information capacity.
</p>"""^^rdf:HTML ;
qudt:informativeReference "http://www.electropedia.org/iev/iev.nsf/display?openform&ievref=112-01-04"^^xsd:anyURI ;
rdfs:isDefinedBy <http://qudt.org/3.5.2/schema/shacl/qudt> ;
rdfs:subClassOf qudt:AbstractQuantityKind,
qudt:Verifiable ;
sh:property qudt:QuantityKind-applicableCGSUnit,
qudt:QuantityKind-applicableISOUnit,
qudt:QuantityKind-applicableImperialUnit,
qudt:QuantityKind-applicableSIUnit,
qudt:QuantityKind-applicableUSCustomaryUnit,
qudt:QuantityKind-applicableUnit,
qudt:QuantityKind-baseCGSUnitDimensions,
qudt:QuantityKind-baseISOUnitDimensions,
qudt:QuantityKind-baseImperialUnitDimensions,
qudt:QuantityKind-baseSIUnitDimensions,
qudt:QuantityKind-baseUSCustomaryUnitDimensions,
qudt:QuantityKind-belongsToSystemOfQuantities,
qudt:QuantityKind-dimensionVectorForSI,
qudt:QuantityKind-eclassCode,
qudt:QuantityKind-expression,
qudt:QuantityKind-hasDimensionVector,
qudt:QuantityKind-iec61360Code,
qudt:QuantityKind-latexDefinition,
qudt:QuantityKind-mathMLdefinition,
qudt:QuantityKind-qkdvDenominator,
qudt:QuantityKind-qkdvNumerator,
qudt:QuantityKind-siExactMatch .