Ordnance%20Survey%20

1
Ordnance Survey Ontologies
Dr John Goodwin
2
Ordnance Survey and Linked Data
3
Region Connection Calculus
disconnected (DC) externally connected (EC)
equal (EQ) partially overlapping (PO)
tangential proper part (TPP) tangential proper
part inverse (TPPi) non-tangential proper part
(NTPP) non-tangential proper part inverse
(NTPPi)
4
Spatial Relations
DC Disjoint EC Touches EQ Equal PO
Partial overlaps TPP Within TPPi Contains NTPP
Within NTPPi Contains
5
Semantics in OWL
Spatial Relations Characteristics
disjoint symmetric
touches symmetric
partiallyOverlaps symmetric
equals symmetric, transitive, reflexive
contains transitive
within transitive
property ? equals ? property equals ? property ?
property within ? disjoint ? disjoint disjoint ?
contains ? disjoint partiallyOverlaps ? within ?
overlaps contains ? touches ? connected Etc
6
Administrative Geography

• ObjectProperty inCounty
• SubPropertyOf
• within
• Characteristics
• Functional
• Range
• County or GreaterLondonAuthority
• ObjectProperty ward
• SubPropertyOf
• contains
• SubPropertyChain
• district o ward
• Range
• UnitaryAuthorityElectoralDivision or Ward

7

• Class District
• SubClassOf
• CivilAdministrativeArea,
• ward some DistrictWard,
• inCounty exactly 1 County

8
Geometry

• Should complex geometries, e.g. Polygons etc. be
  stored in the graph?

extent
asGML
Feature
Geometry
XML Literal
Polygon
Line
Point