Developing Service Ontologies

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Developing Service Ontologies

• Peter Fox (NCAR)
• ESIP Winter Meeting (TIWG)
• January 9, 2008, Washington, D.C.

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Services

• Ontologies of services, provides
• What does the service provide for prospective
  clients? The answer to this question is given in
  the "profile," which is used to advertise the
  service. To capture this perspective, each
  instance of the class Service presents a
  ServiceProfile.
• How is it used? The answer to this question is
  given in the "process model." This perspective is
  captured by the ServiceModel class. Instances of
  the class Service use the property describedBy to
  refer to the service's ServiceModel.
• How does one interact with it? The answer to this
  question is given in the "grounding." A grounding
  provides the needed details about transport
  protocols. Instances of the class Service have a
  supports property referring to a ServiceGrounding.

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Developing a service ontology

• Use case find and display in the same
  projection, sea surface temperature and land
  surface temperature from a global climate model.
• Find and display in the same projection, sea
  surface temperature and land surface temperature
  from a global climate model.
• Classes/ concepts
• Temperature
• Surface (sea/ land)
• Model
• Climate
• Global
• Projection
• Display

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Service ontology

• Climate model is a model
• Model has domain
• Climate Model has component representation
• Land surface is-a component representation
• Ocean is-a component representation
• Sea surface is part of ocean
• Model has spatial representation (and temporal)
• Spatial representation has dimensions
• Latitude-longitude is a horizontal spatial
  representation
• Displaced pole is a horizontal spatial
  representation
• Ocean model has displaced pole representation
• Land surface model has latitude-longitude
  representation
• Lambert conformal is a geographic spatial
  representation
• Reprojection is a transform between spatial
  representation
• .

5
Service ontology

• A sea surface model has grid representation
  displaced pole and land surface model has grid
  representation latitude-longitude and both must
  be transformed to Lambert conformal for display

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More information

• OWL-S - http//www.w3.org/Submission/OWL-S
• SWSO/F/L - Semantic Web Services
  Ontology/Framework/Language - http//www.w3.org/S
  ubmission/SWSF/
• WSMO/X/L - Web Services Modeling
  Ontology/Exection/Language - http//www.w3.org/Sub
  mission/WSMX/ www.wsmo.org, www.wsmx.org
• SAWSDL - (WSDL-S)