1. Rob Raskin NASA/Jet Propulsion Laboratory Pasadena, CA
SWEET Ontologies
Rob Raskin
NASA/Jet Propulsion Laboratory
Pasadena, CA

2. Semantic Web for Earth and Environmental Terminology (SWEET)
Concept space written in OWL-DL
Serves as middle-to-upper level ontology for Earth system science and geospatial applications
Enables scalable classification of associated data and applications
Current version contains 6600 concepts that can be combined to fit various end user needs
200 modular ontologies

3. SWEET Top-Level View

4. SWEET Geospatial Ontologies
Space (general ideas)
Spatial Categories (big, small, etc.)
Spatial Coordinates
Spatial Direction
Spatial Distribution
Spatial Extent (height, area, etc.)
Spatial Object (0-D, 1-D, 2-D, 3-D)
Spatial Relation
Spatial Scale (mesoscale, global, etc.)

5. Spatial Geometry
reprSpaceGeometry.owl
reprSpaceGeometry3D.owl

6. Spatial Properties propSpace.owl propSpaceDirection.owl
propSpaceDistance.owl
propSpaceHeight.owl
propSpaceMultidimensional.owl
propSpaceThickness.owl

7. Spatial Representations
reprSpace.owl
reprSpaceCoordinate.owl
reprSpaceReferenceSystem.owl
reprSpaceScale.owl

8. Spatial Relations
reprSpaceRelation.owl
reprSpaceDirection.owl

9. Rob Raskin raskin@jpl.nasa.gov
Resources
SWEET ontology
Applications
Spatial Decision Support Knowledge Portal
Noesis ontology-aided search tool
Rob Raskin