® ®
Use of Ontologies within the Open Geospatial Consortium
Luis Bermudez. Ph.D. Director of Interoperability Certification 2012-11-01
© 2012 Open Geospatial Consortium Slide title
• Clarifications – OGC – Ontologies • Need of URIs at OGC • Management of OGC URIs • GeoSPARQL • Cool Experiments
® OGC © 2012 Open Geospatial Consortium OGC
475 volunteer organizations 4307 Users 60 Standards
® 3 OGC © 2012 Open Geospatial Consortium OGC
® OGC © 2012 Open Geospatial Consortium 4 OGC
® OGC © 2012 Open Geospatial Consortium 5 ® OGC © 2012 Open Geospatial Consortium 6 Cumulative Issue #157 December 2010 ISSN 0274-6338
® OGC © 2012 Open Geospatial Consortium 7 ® OGC © 2012 Open Geospatial Consortium 8 So..
Some data use in Science is served via OGC standards – netCDF – KML – WMS – SOS – WPS
® 9 OGC © 2012 Open Geospatial Consortium ® OGC © 2012 Open Geospatial Consortium SST, sea water temperature, water temperature, temp ...
® OGC © 2012 Open Geospatial Consortium SST Records. Supersonic 1978 formed transport Record Label (SST)
® OGC © 2012 Open Geospatial Consortium Also in metadata elements
® 13 OGC © 2012 Open Geospatial Consortium Ontologies
• Is a specification of a conceptualization – Gruber • We explicit identify a class and a resource and make a URI • Keep it simple • We create classes and properties to fit our needs • We are not creating upper upper formal ontologies
® OGC © 2012 Open Geospatial Consortium OGC Produces Hundreds of artifacts per year
® OGC © 2012 Open Geospatial Consortium 64 Change Requests were submitted in 2011
® 16 OGC © 2012 Open Geospatial Consortium Formal identification
® 17 OGC © 2012 Open Geospatial Consortium IANA RFC 5165
® 18 OGC © 2012 Open Geospatial Consortium URLs or URNs ?
http URIs ✔
® 19 OGC © 2012 Open Geospatial Consortium We identify more than documents
® 20 OGC © 2012 Open Geospatial Consortium ® 21 OGC © 2012 Open Geospatial Consortium ® 22 OGC © 2012 Open Geospatial Consortium ® 23 OGC © 2012 Open Geospatial Consortium Vocabulary Server
1. Vocabularies are formalized using RDF/SKOS 2. Expert users want to connect to a SPARQL endpoint 3. Normal users need a simple interface with basic queries – “find concept by-label” 4. Vocabularies are strongly governed – read-only access for most users 5. Service owner ≠ content URI owner – same content may be hosted in multiple services
® 24 OGC © 2012 Open Geospatial Consortium • OGC Definition URIs are hosted/ redirected to SISSvoc
http://def.seegrid.csiro.au/sissvoc/ogc-def/concept? labelcontains=water http://www.opengis.net/def/waterml/2.0/medium/PoreWater
® OGC © 2012 Open Geospatial Consortium OGC Naming Authority
• Subcommittee of the Technical Committee (TC) • Manages the register resources • Coordinates with OGC staff the publication of the registry • Every standard that is submitted for publication passes through the OGG-NA
® 26 OGC © 2012 Open Geospatial Consortium Conclusions OGC URIs
• Some Science Data is published via OGC Standards
• OGC standards now are filled of URIs to identify OGC resources and standards related resources
• Governed and maintained by OGC Naming Authority
® 27 OGC © 2012 Open Geospatial Consortium OGC GeoSPARQL - A Geographic Query Language for RDF Data
® 28 OGC © 2012 Open Geospatial Consortium http://www.opengis.net/ont/geosparql
® 29 OGC © 2012 Open Geospatial Consortium ® 30 OGC © 2012 Open Geospatial Consortium Geospatial Properties
® 31 OGC © 2012 Open Geospatial Consortium Excellent Article
® 32 OGC © 2012 Open Geospatial Consortium Interoperability Program Activities
I have not failed, I’ve just found 10,000 ways that won’t work.
Thomas Edison
® 33 OGC © 2012 Open Geospatial Consortium OWS-8 CCI – Motivation Scenario
California National Guard
Monterey Airport Field operator
Prefers Prefers
NGA model - Local USGS model - Topographic The National Map Data Store (LTDS) Mediate (TNM)
Data Data Data Source 1 Source 2 Source n ® 34 OGC © 2012 Open Geospatial Consortium OWS-8 CCI Architecture
® 35 OGC © 2012 Open Geospatial Consortium OWS-9 CCI Aviation Client
• Pilots terminology – Using Air Transportation Information Ontology • Includes Pilot Controller Glossary for the JPAMS project (air traffic control procedures)
® OGC © 2012 Open Geospatial Consortium AIXM features
® OGC © 2012 Open Geospatial Consortium AIXM features
® OGC © 2012 Open Geospatial Consortium OWS-9 CCI Aviation Architecture
Air Pilots Traffic Control
Pilot Controller Glossary
Client
Web Feature Web Processing SPARQL Server Service Service
AIXM Data FAA Air Transportation (GML) Information Ontology mappings Glossary and ® AIXM OGC © 2012 Open Geospatial Consortium OWS9 Geonames
® OGC © 2012 Open Geospatial Consortium OWS-9 CCI
® 41 OGC © 2012 Open Geospatial Consortium Thank you
• Luis Bermudez [email protected]
• Blog: Is OGC playing with LinkedData http:// www.opengeospatial.org/blog/1673
® 42 OGC © 2012 Open Geospatial Consortium