Post on 07-Aug-2020
European NEtwork for RedistributingGeospatial Information to user Communities -Open Data
Stefano NativiPaolo MazzettiMiguel Ángel Latre AbadíaFrancisco J. López Pellicer
Virtual Hubs for Facilitating access toGeospatial Open Data in
Open SDI
ENERGIC OD has received funding from the European Union ICT Policy Support Programme (ICT PSP) under the Competitiveness and Innovation Framework Programme (CIP), grant agreement n° 620400. Este trabajo también ha sido parcialmente financiado por el Gobierno de España a través del proyecto TIN2012-37826-C02-01
European NEtwork for Redistributing Geospatial Information to user Communities - Open Data
� Interoperability: geo OD are highly heterogeneous� Data/metadata model and formats
� Coordinate Reference Systems
� Data services specifications
� Quality and reliability
� Semantics
� Usability� Complex service interfaces
� Complex metadata/data models/encodings
Main tech. barriers
MxN complexity
European NEtwork for Redistributing Geospatial Information to user Communities - Open Data
� Federation:� Strong mandate for imposing and enforcing the adoption of a
common specification.
� Example: INSPIRE
� Brokering:� No common specification is defined, specific components (brokers)
mediates and harmonizes (try) existing systems
� The broker acts as a hub for publishing, discovering and accessing open data
� Non geospatial example: CKAN
Tech. Approaches
European NEtwork for Redistributing Geospatial Information to user Communities - Open Data
Federation(in practice)
European NEtwork for Redistributing Geospatial Information to user Communities - Open Data
Brokering
VirtualHub
Upstream services
Downstream services
Midstream services
Resource provision
Interoperability,Policy harmonization,
Other VAS
User services
European NEtwork for Redistributing Geospatial Information to user Communities - Open Data
Why an open SDI may use a Virtual Hub?
VirtualHub
Open SDIs Other geospatial OD systems
Open SDI interfacesto access SDI andnon SDI OD
Other interfacesto access SDI andnon SDI OD
European NEtwork for Redistributing Geospatial Information to user Communities - Open Data
Example:ENERGIC OD Virtual Hub
National, regional, European and global Open Data Platforms
• Brokering Framework• Open Data platform crawler• Sensor platform• Crowdsourcing data publishing platform
• ESA Portal• 10 Pilot applications
• Standard interfaces• Restful API• Web API
M+N complexity
Virtual Hub
European NEtwork for Redistributing Geospatial Information to user Communities - Open Data
Insights from the technical point
� Openess requires to hide our domain complexity� Virtual Hubs users are app devs
� Openess requires spatial must not be special for non geo-devs� Yes for final users!
� How à e.g. one SDI hub, multiple open APIs� Widespread geospatial specifications (e.g. OGC and ISO)
� Lightweight specifications (e.g. OpenSearch)
� APIs focused for rapid implementation in JS
� And keep track of the evolving tech landscape (e.g. reactive applications)� Legally open + not widely technically usable à closed in practice
European NEtwork for Redistributing Geospatial Information to user Communities - Open Data
� Interested in the topic?� http://www.energic-od.eu/
� And an INSPIRE workshop this afternoon!� “Open Data Access and Harmonisation by Virtual Hub –
ENERGIC OD solutions”� Keynote speakers: Thomas Usländer, Dirk Frigne
� Consortium speakers: Stefano Nativi, Paolo Mazzetti, Stefan Braumann, Erwan Bocher and Silvano De Zorzi
� 14:00, room A
ENERGIC OD