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QUDT CATALOG - Quantities, Units, Dimensions and Data Types Ontologies

August 04, 2022

Catalog URI= http://www.qudt.org/catalog/QC_QUDT-R2.1

QUDT Ontologies: Schemas and Vocabularies

Warning! Files downloaded from this catalog may not be the latest versions. The master set of files is maintained in our Github repository. The repository also contains additional files that are in various stages of development.

QUDT models are based on dimensional analysis expressed in the OWL Web Ontology Language (OWL). The dimensional approach relates each unit to a system of base units using numeric factors and a vector of exponents defined over a set of fundamental dimensions. In this way, the role of each base unit in the derived unit is precisely defined. A further relationship establishes the semantics of units and quantity kinds. By this means, QUDT supports reasoning over quantity kinds as well as units. QUDT models may be translated into other representations for machine processing, or other programming language structures according to need.

Catalog content is organized in the following sections:

  1. Schemas
  2. Vocabularies (instance graphs)

Schemas

#Graph TypeCatalog Entry TitleCataloged GraphGraph StatusDocumentation
1Schema graphQUDThttp://qudt.org/2.1/schema/qudtpublished
2022-08-04
 
2Schema graphQUDT Datatypes Schemahttp://qudt.org/2.1/schema/datatypepublished
2022-08-04
 

Vocabulary Graphs

#Graph TypeCatalog Entry TitleCataloged GraphGraph StatusDocumentation
1Vocabulary graphQUDT CONSTANTShttp://qudt.org/2.1/vocab/constantpublished
2022-08-04
 
2Vocabulary graphQUDT PREFIXEShttp://qudt.org/2.1/vocab/prefixpublished
2022-08-04
 
3Vocabulary graphQUDT QUANTITY KIND DIMENSION VECTORShttp://qudt.org/2.1/vocab/dimensionvectorpublished
2022-08-04
 
4Vocabulary graphQUDT QUANTITY KINDShttp://qudt.org/2.1/vocab/quantitykindpublished
2022-08-04
 
5Vocabulary graphQUDT SYSTEMS OF QUANTITY KINDShttp://qudt.org/2.1/vocab/soqkpublished
2022-08-04
 
6Vocabulary graphQUDT SYSTEMS OF UNITShttp://qudt.org/2.1/vocab/soupublished
2022-08-04
 
7Vocabulary graphQUDT UNITShttp://qudt.org/2.1/vocab/unitpublished
2022-08-04
 

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