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External namespaces and terms

Most applications using VF will need terms defined in various other vocabularies. In fact, we consider these to be essential to a complete value flows core vocabulary. Below are the elements we are re-using from well established vocabularies (web ontologies).

SKOS

https://www.w3.org/TR/skos-reference/

FOAF

http://xmlns.com/foaf/spec/

ORG

https://www.w3.org/TR/vocab-org/

OM2

http://www.ontology-of-units-of-measure.org/resource/om-2/

  • om2:Measure
  • om2:hasUnit
  • om2:hasNumericalValue

  • om2:Unit

    • A list of units can also be found here. Each subclass on this page has an additional list of units.
    • VF will use (at least) rdfs:label and om2:symbol as properties of Units.
    • See note at the end of Flows regarding display of unit om2:one.

DTYPE

http://www.linkedmodel.org/schema/dtype#

TIME

https://www.w3.org/TR/owl-time

Some useful constructs, others here: https://www.w3.org/TR/owl-time/#topology, see the Interval Relations.

vf defines property chain axioms for vf:hasBeginning , vf:hasEnd, and vf:hasPointInTime as slight variant of Alignment of PROV-O with OWL-Time.

GEO

https://www.w3.org/2003/01/geo/wgs84_pos#

DFC

http://www.virtual-assembly.org/DataFoodConsortium/BusinessOntology#

DCTERMS

http://purl.org/dc/terms/