Interoperability and Semantics

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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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