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:
# | Graph Type | Catalog Entry Title | Cataloged Graph | Graph Status | Documentation |
---|---|---|---|---|---|
1 | Schema graph | QUDT (OWL) | http://qudt.org/2.1/schema/qudt | published
2024-12-12 | |
2 | Schema graph | QUDT (SHACL) | http://qudt.org/2.1/schema/shacl/qudt | published
2024-12-12 | |
3 | Schema graph | QUDT (SHACL) OVERLAY | http://qudt.org/2.1/schema/shacl/overlay/qudt | published
2024-12-12 | |
4 | Schema graph | QUDT Datatypes Schema | http://qudt.org/2.1/schema/datatype | published
2024-12-12 |
# | Graph Type | Catalog Entry Title | Cataloged Graph | Graph Status | Documentation |
---|---|---|---|---|---|
1 | Vocabulary graph | QUDT CONSTANTS | http://qudt.org/2.1/vocab/constant | published
2024-12-12 | |
2 | Vocabulary graph | QUDT CURRENCY UNITS | http://qudt.org/2.1/vocab/currency | published
2024-12-12 | |
3 | Vocabulary graph | QUDT PREFIXES | http://qudt.org/2.1/vocab/prefix | published
2024-12-12 | |
4 | Vocabulary graph | QUDT QUANTITY KIND DIMENSION VECTORS | http://qudt.org/2.1/vocab/dimensionvector | published
2024-12-12 | |
5 | Vocabulary graph | QUDT QUANTITY KINDS | http://qudt.org/2.1/vocab/quantitykind | published
2024-12-12 | |
6 | Vocabulary graph | QUDT SYSTEMS OF QUANTITY KINDS | http://qudt.org/2.1/vocab/soqk | published
2024-12-12 | |
7 | Vocabulary graph | QUDT SYSTEMS OF UNITS | http://qudt.org/2.1/vocab/sou | published
2024-12-12 | |
8 | Vocabulary graph | QUDT UNITS | http://qudt.org/2.1/vocab/unit | published
2024-12-12 |