Oct 28, 2013 - Interoperability and Semantics. Workshop Semantics in Geospatial. Architectures: Applications and Impleme
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Interoperability and Semantics Workshop Semantics in Geospatial Architectures: Applications and Implementation University of Wisconsin-Madison
! Luis Bermudez. Ph.D. Director of Compliance Program 2013-10-28 © 2013 Open Geospatial Consortium
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What do all these have in common?
Location
Spatial Data Infrastructures (SDI) Standards
Management
Promote the social economic and environmental
Integrate
development of a region
Policies
Agreements
What type of information is handled by an SDI? … Local Thematic Maps Thematic Maps Road map Environment Cadastre Administrative Limits Topography Orthophotos
Time Series
Numerical Models
Social
Interoperability
Being able to process different type of data
Interoperability
HILL (NGA)
SUMMIT (USGS)
Being able to understand data from different systems
Discovering ISO 19115
Catalog Services for the Web (CSW)
Requires agreement on Interfaces and Encodings
Processing and Using
Requires agreement on Interfaces and Encodings
Processing and Using
Requires agreement on Interfaces and Encodings
Understanding for matching and categorizing
Requires dealing with Semantics
Strategies • Providers of data add explicit categories to describe their services and their data • Consumers (portals) • do their own categorization and • deal with the semantic inconsistencies
Strategies • Providers of data add explicit categories to describe their services and their data • Consumers (portals) • do their own categorization and • deal with the semantic inconsistencies
© 2013 Open14 Geospatial
Agreement on Categories !
Each provider explicitly describes the data (metadata) using the categories
Themes
Strategies • Providers of data add explicit categories to describe their services and their data • Consumers (portals) • do their own categorization and • deal with the semantic inconsistencies
OGC Prototyping: Interoperability Program • Mediate across 2 domain models using WFS • Provide WFS data via user friendly categories • Merge data with crowdsourced data
I have not failed, I’ve just found 10,000 ways that won’t work.
! Thomas Edison
OWS-8 CCI – Motivation Scenario California National Guard Monterey Airport Field operator Prefers
Prefers
NGA model - Local Topographic Data Store (LTDS)
Data Source 1
USGS model - The National Map (TNM) Mediate
Data Source 2
Data Source n
Communities create their own model (types) NGA Feature: RoadGeocurve Property: RoadGeocurve.medianPresent USGS Feature: RoadSegmentGeocurve Property: RoadSegmentGeocurve.cfccCode 21
Interfaces
Web Feature Service communities define their own models and data can be access cia WFS http://wca.com& service=wfs&version=1.1.0&request=GetFeature & typeName= wca:Bridge& maxFeatures=5
Conflation
Requires Geometry and Semantic Conflation
Conflation
Source Dataset
Target Dataset
OWS-8 CCI Architecture
Gazetteer Demo
OWS-9 Single Point of Entry Gazetteer HILL (NGA) SUMMIT (USGS)
Hills
USGS Gazetteer (CubeWerx)
Semantically Rich Single Point of Entry Gazetteer (Envitia)
© 2012 Open Geospatial Consortium
NGA Gazetteer (Intergraph)
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© 2012 Open Geospatial Consortium
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© 2012 Open Geospatial Consortium
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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)
OWS-9 CCI Aviation Architecture Air Traffic Control
Pilots
Pilot Controller Glossary
Client
Web Feature Service AIXM Data (GML)
Web Processing Service
SPARQL Server
FAA Air Transportation Information Ontology mappings Glossary and AIXM
Search by topic in the glossary
© 2013 Open Geospatial Consortium
OWS 10 (2013-2014) Linked Data
Get related crowdsourced data Use GeoSPARQL to query
Automatic Conflation • Based on geometric rules • Based on semantic relations
Open Geospatial Consortium 470+ volunteer organizations (members) 4000+ Users 60+ Standards 700+ implementing products 150+ current certified implementations
.. Coming soon Geospatial Standard Working Group
Conclusions • Using standards is required for building SDIs and basic interoperability (discover, access and display data on a map). • Categorizing, matching, conflating, merging requires better understanding and use ontologies and semantic mediation strategies. • OGC demonstrates how to use WFS services along with semantic solutions to categorize and merge data.
Contact and Links Information Luis Bermudez, Ph.D.
[email protected] @berdez on Twitter !
http://www.linkedin.com/in/bermudez !
http://www.opengeospatial.org !
OGC Interoperability Program http://www.opengeospatial.org/ogc/programs/ip © 2013 Open Geospatial Consortium
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