PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • One way to compute this that I have seen in the literature is to first compute the distance transform (as outlined earlier); then, a vertex occurs wherever there is a local maximum of this function, and vertices are connected by walking along the direction of least change of the distance transform to form edges.
http://www.w3.org/ns/prov#wasQuotedFrom
  • gamedev.net