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/
OM2
http://www.ontology-of-units-of-measure.org/resource/om-2/
om2:Measure
om2:hasUnit
-
- See the page also in this section called Units of Measure.
- VF will use (at least)
rdfs:label
andom2:symbol
as properties of Unit.
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#